Walter Herbert Gerstle

June 2019

Personal

 

Work Address

Dept. of Civil Engineering

University of New Mexico

Albuquerque, NM, 87131

Phone: (505)277-3458, FAX (505)277-1988

Email: gerstle@unm.edu

URL: http://www.unm.edu/~gerstle/

 

Personal Data

Born in Boulder, Colorado, January 28, 1956

Citizen of U.S.A.

Married; one son

 

Education

Doctor of Philosophy, January, 1986; Cornell University, Ithaca, NY

Master of Science, May, 1982; Cornell University, Ithaca, NY

Bachelor of Science, "With Special Honors", 1978; Civil Engineering, University of Colorado, Boulder, CO

Harvey Mudd College, September 1974 to June 1976; Major: Engineering

 

Career Experience

Summer, 2019: Research Fellow, Oak Ridge National Laboratory, Oak Ridge, Tennessee

2014-2015: Sabbatical leave at Center for Advanced Research Computing, University of New Mexico

2007-2008: Sabbatical leave at National Institute of Standards and Technology & Sandia National Laboratories

Summer, 2003: Sandia National Laboratories, Albuquerque, NM.

1999-present: Professor, Department of Civil Engineering, University of New Mexico

1992 - 1999: Associate Professor; Department of Civil Engineering, University of New Mexico

1986 - 1992: Assistant Professor, Department of Civil Engineering, University of New Mexico

1993-1994: Sabbatical Leave, Sandia National Laboratories

Summer, 1991: AFOSR Summer Faculty Fellow, Phillips Laboratory, Albuquerque, NM.

Summer, 1989: NASA/Langley Summer Faculty Fellow, NASA/Langley, Hampton, VA.

1985-1986: Member of Technical Staff, Sandia National Laboratories, Albuquerque, NM

1980-1985: Teaching and Research Assistant, Cornell University, Department of Structural Engineering

Summer, 1984: Contractor, Lawrence Livermore National Laboratory, Livermore, CA

1979-1980: Architectural Engineer in Training, Richard Weingardt Consultants, Denver, CO

1978: Architectural Engineer in Training, W. L. Simons and Associates, Lakewood, CO

Summer, 1977: Assistant Engineer, Surveyor, Zoyiopoulos and Associates, Greeley, CO

 

Activities in Professional Societies

President, UNM 21 Club, 2017-present

Member: New Mexico Board of Licensure for Professional Engineers and Professional Surveyors, 2017-present

President: New Mexico Society for Professional Engineers (NMSPE), 2016-2017

President: American Society of Civil Engineers (ASCE): NM Section 2014-2015

Member: American Society of Civil Engineers (ASCE), 1978-present

President: Albuquerque Branch ASCE, 1989-1990

Fellow: American Concrete Institute, 1986-present

Member: ASCE/ACI Committee 447, "Finite Element Analysis of Reinforced Concrete Structures"

Member: ASCE/Engineering Mechanics Division, Committee on Properties of Materials, 1996-present

Associate Editor: ASCE Journal of Structural Engineering, 1996-1999

Book Review Editor: ASCE Journal of Structural Engineering, 2000-2004

State Board Member: ASCE-NM, 1989-1990

Chair: American Concrete Institute Committee 446 "Fracture Mechanics", 1998-2006

Secretary: American Concrete Institute Committee 446, "Fracture Mechanics" 1993-1998

Chair: American Concrete Institute Subcommittee 446-III "Finite Element Analysis", 1992-1998

Member: American Society for Testing of Materials (ASTM) 1986-95

Member: American Society for Testing of Materials (ASTM) Committee E-24, "Fracture Mechanics"

Member: Society for Experimental Mechanics (SEM): 1989-1994

Member: National Society for Professional Engineers: 1986-present

Member: Engineering Societies Presidents Council: 1989-1990

Chi Epsilon Honorary Fraternity: Member 1978-present; Faculty Advisor: 1997-2001; 2008-2014

Member: Sigma Xi, The Scientific Research Society: 1994-2008;

President: UNM Chapter Sigma Xi, 2003 - 2006

President-Elect: UNM Chapter Sigma Xi, 2002 - 2003

Secretary: UNM Chapter Sigma Xi, 2000-2002

Member: UNM 21 Club, 2003 - present

 

Awards and Honors

New Mexico Chapter, National Society for Professional Engineers, “Outstanding Service Award 2012”

Stamm Award, Department of Civil Engineering, UNM, 2011

Structural Engineers Association of Illinois (SEAOI) Award outstanding paper in ACI Structural Journal

Fellow, American Concrete Institute, 2002-present

Commendable Poster Award for "Gas-Driven Hydrofracture at WIPP", Hazardous Substance Research Center/Waste Management Education and Research Consortium Joint Conference on the Environment, May 21-23, Albuquerque, NM, 1996.

Associated Western Universities Fellowship 1993-1994.

Tom Popejoy Society, University of New Mexico: 1988-present

Presidential Young Faculty Award, University of New Mexico, 1988

Registered Professional Engineer in New Mexico, Colorado, and New Jersey

Graduate student, Ivan Campos, won Outstanding Graduate Student in Civil Engineering Department, 2013

Graduate student, Ming Xie, won Outstanding Graduate Student in Civil Engineering Department, 1991

Honorable mention, best journal paper during one year period (June 1991 - June 1992), ASCE Journal of the Aerospace Division (see publication list for reference).

Structural Engineers Association of Illinois 2008 Publication Award of Merit, for ACI Structural Journal paper “Justification of ACI 446 Proposal…” (see publication list for reference).

 

Funded UNM Research Projects

 “Detection and Recognition of Concealed Machinery using Synthetic Aperture Radar: A co-registered Vibration-Estimation and Imaging Approach”, funded by National Nuclear Security Administration, total $750,000 total,  (Majeed Hayat, PI (CHTM); Walter Gerstle, Co-PI (CE) ($156,837); Balu Santhanam, Co-PI (ECE)), 5/31/2014 – 5/31/2017.

 “UNM Bridge Load Rating Project – Phase III”, funded by NMDOT, Walter Gerstle, PI, $600,000, 5/31/2014 - 5/31/2018

 “Photovoltaic Structural Research – Phase II”, funded by Sandia National Laboratories, PI, $60,000, 2012-2014

 “Co-registered Vibrometry and Imaging: A Combined Synthetic-Aperture Radar and Fractional-Fourier Transform Approach”, funded by Naval Postgraduate School, $314,041 total,  (Majeed Hayat, PI (ECE); Walter Gerstle, Co-PI (CE) ($35,323); Balu Santhanam, Co-PI (ECE)), 9/30/2011 - 9/30/2012

“Photovoltaic Structural Research”, funded by Sandia National Laboratories, PI, $60,000, 2011-2012

 “Laboratory Testing of Pressurized Drill Pipe Casing Joint”, funded by Sandia National Laboratories, PI, $50,000, 2010-2011

 “UNM Bridge Load Rating Project – Phase II”, funded by NMDOT, Walter Gerstle, PI, $400,000, 7/19/2010 - 5/31/2014

 “Development of Thermally Tunable Struts for Support of Optical Telescope Elements”, funded by AFOSR, Christos Chistodoulou, PI,  ($50,000 for Gerstle) 7/15/2009-7/15/2012

 “Bridge Load Rating Project”, funded by NMDOT, Walter Gerstle, PI, $83,292, 5/15/2009-5/15/2010

 Algorithms and Methodologies for Detecting Vibrations Using Synthetic Aperture Radar: A Fractional-Fourier Transform Approach”, DOE (NNSA) Award #DE-FG52-08NA28782, $845,000,  (Majeed Hayat, PI (ECE); Walter Gerstle, Co-PI (CE) ($111,032); Balu Santhanam, Co-PI (ECE)), 9/12/2008 – 9/11/2011

“Co-registered Vibrometry and Imaging: A Combined Synthetic-Aperture Radar and Fractional-Fourier Transform Approach”, funded by NSF Proposal Number IIS 0813747, $748,538,  (Majeed Hayat, PI (ECE); Walter Gerstle ($119,457), Co-PI (CE); Balu Santhanam, Co-PI (ECE)), 8/30/2008 - 8/30/2012

 “Near Earth Space Surveillance Initiative”, funded by Air Force Research Laboratory (John McGraw, PI), 10/30/2004 - present

 “Long Wavelength Array”, funded by Naval Research Laboratory (Greg Taylor and Jack McIver co-PIs), 10/30/2006 - present

“Long Wavelength Demonstration Array”, funded by Applied Research Laboratory, UT Austin (Frank Gilfeather and Jack McIver co-PIs), 10/30/2005 - 10/30/2006.

“Analysis of Surface Vibrations Resulting from Machinery in Buildings – Phase III”, funded by Sandia National Laboratories, $102,246, 2/15/2006 – 10/30/2006.

“Analysis of Surface Vibrations Resulting from Machinery in Buildings – Phase II”, funded by Sandia National Laboratories, $54,111, 2/15/2005 – 2/15/2006 (with Tim Ross, Co-PI).

 “Analysis of Surface Vibrations Resulting from Machinery in Buildings”, funded by Sandia National Laboratories, $134,207, 11/21/2003 – 11/15/2004 (with Tim Ross, Co-PI).

 “Solar Rack Design Software – Phase II”, funded by UniRac, Inc., $10,841, 7/14/03 – 12/19/03.

“Solar Rack Design Software”, funded by UniRac, Inc., $10,806, 2/03-7/14/03.

"Cellulose-Earth Material for Rural Homes", SANCO Enterprises, SBIR proposal funded by the USDA, $17,880, 5/99-11/99.

"Data Models and Formats Research", funded by Sandia National Laboratories, $40,000, 2/16/1999-1/31/2000.

"Finite Element Meshing Approached as a Global Minimization Process- Phase III", funded by Sandia National Laboratories, $50,000, 11/1998 - 10/1999.

"Deployable Space Structure Research", funded by Air Force Research Laboratory, $492,646, 12/1997-2/2001.

"Finite Element Meshing Approached as a Global Minimization Process- Phase II", funded by Sandia National Laboratories, $50,000, 11/1997 - 10/1998.

"Research Experiences for Undergraduates in Civil Engineering", NSF, $65,155., 5/1997-8/1997, (with Tim Ross, Co-PI, Grant No. EEC-9322063, Amendment 003).

"Finite Element Meshing Approached as a Global Minimization Process", funded by Sandia National Laboratories, $70,000., 11/1996 - 10/1997.

"Design and Implementation of a Virtual Geometry Interface", funded by Sandia National Laboratories, $18,000., 9/1996 - 5/1997.

"Approximate Finite Element Meshing using Fuzzy Surface Tessellation", funded by Autonomous Control in Engineering Center, (NASA), 1995-1999, (with Tim Ross), approximately $150,000. per year for five years.

"Development of Waste Gas Pressure Relief Mechanism for Waste Isolation in Salt Beds", DOE/WERC, $90,000., 7/1996 - 6/1997, PI, (with Lary Lenke, Co-PI).

"Prediction of Combined Smeared and Discrete Mechanisms in WIPP Rock Salt - Phase II", DOE/WERC, $61,000., Feb. 1994 - Aug. 1995., PI, (with Zhen Chen, Co-PI)

"Research Experiences for Undergraduates in Civil Engineering ", NSF, $155,849., 1994-1997, (with Tim Ross, Co-PI, Grant No. EEC-9322063).

"Gas-Driven Hydrofracture at WIPP", Sandia National Laboratories, $27,301., 12/93-12/94.

"Crack Width and Spacing in Reinforced Concrete", UNM Research Allocation Committee, $1,900., April 20, 1993-Sept. 30, 1993.

"Research Education for Undergraduates", NSF, $39,923., 1993-1994, (with Tim Ross, Co-PI, Grant No. EEC-9300952).

"Prediction of Combined Smeared and Discrete Mechanisms in WIPP Rock Salt - Phase I", DOE/WERC, $60,000., Feb. 1993 - Aug. 1994., PI, (with Zhen Chen, Co-PI).

"Basic Ordering Agreement", PI, Re/Spec, Inc., 1990-open,

            Task 1 $3,200. (8-90 to 2-91)

            Task 2 $2,600. (5-91 to 7-91)

"Research Education for Undergraduates", NSF, $38,555., 1991-1992, (Co-PI with Tim Ross, PI, Grant No. EID-9100822) .

"Research Education for Undergraduates", NSF, $35,172., 1990-1991, (Co-PI with Tim Ross, PI, Grant No. 9000744)

"NASA Lunar Observatory Project", PI, NASA, $17,000., 1990-1991, (with K-M. Chua, Co-PI, New Mexico State University Subcontract)

"A New Integrated, Computer Graphical Design Tool- Phase II", PI, NSF $110,000., 1989 to 1991, (SBIR with Re/Spec, Inc.)

"General-Purpose Postprocessing System" ARCO Oil Company, PI, $11,000., 1990-1991, (Subcontract with Re/Spec, Inc.)

"Finite Element and Boundary Element Modeling of Crack Propagation in Three-Dimensional Structures", NSF, PI, $56,000., 1987-1990, (Grant No. MSM-8706409)

"Development of an Automated 3-D Finite Element Mesh Generator -Phase II", Sandia National Laboratories, PI, $30,000., 1988-1989

"Prototype Integrated Interactive Graphical Analysis Software System", ARCO Oil Company, PI, $18,750., 1988-1989, (Re/Spec, Inc. Subcontract)

"Development of an Automated 3-D Finite Element Mesh Generator", Sandia National Laboratories, PI, $30,000., 1987-1988.

"A New Integrated, Computer Graphical Design Tool", NSF, PI, $16,501., 1988, (SBIR with Re/Spec, Inc.)

 

 

Consulting Contracts (smaller consulting projects not listed)

“Expert Witness” several projects as expert witness on structural failures.

"Structural Analysis of Telescopes", DFM Engineering, Inc., Longmont, CO., ongoing structural consulting.

“Support Structures for Solar Panels” UniRac, Inc., ongoing structural consulting.

“Structures for Solar Arrays” Array Technologies, Inc., ongoing structural consulting.

"Investigation of Deformations and Stresses in Stainless Steel Pool Liner for Sandia National Laboratories Building 6586 Gamma Irradiation Facility", K.L. House Construction, Albuquerque, NM, 5/99.

"Hydrofracture Behavior of WIPP", Environmental Evaluation Group, Albuquerque, NM, 3/1/98-4/1/98.

"Hydrofracture Modeling of WIPP", The Hydrodynamics Group, La Honda, CA., 8/1/97-10/1/97.

"Fracture Analysis of the Northumberland Strait Bridge", J. Muller International, San Diego, CA., 3/1/97-4/20/97.

"Structural Analysis of Laser Beam Director", DFM Engineering, Inc., Longmont, CO., 12/5/91-1/15/92.

"Numerical Fracture Analysis of Grouted Joints for Nuclear Waste Isolation", Swedish Nuclear Agency, PI, 1988-1989, (consulting subcontract to Re/Spec, Inc.)

 

Publications in Refereed Archival Journals and Refereed Special Publications:

 (Graduate Student Coauthors for whom Gerstle served as academic advisor are in Bold Face)

 

Bieberdorf, Nathan, Towner, Zachary, Hubbard, Neal B., and Gerstle, Walter. An Evaluation of Different Plasticity and Failure Laws in Simulating Puncture in 7075-T651 Aluminum.. United States: N. p., 2018. Web. doi:10.2172/1467165.

Nikravesh, S. and Gerstle, W., “Improved State-Based Peridynamic Lattice Model Including Elasticity, Plasticity, and Damage”, Computational Mechanics in Engineering and Sciences, Tech Science Press, Vol. 116, No. 3, pp323-347, 2018. http://www.techscience.com/doi/10.3970/cmes.2018.904.099.html

Campbell, J.B., Wang, Q., Ade-Bello, J., Caudana, H., Trujillo, N.B., Bhatta, I., Dunkel, R., Atwood, T., Doerry, A., Gerstle, W., Santhanam, B., Hayat, M.M. “SAR-based vibrometry using the fractional Fourier transform”, Proc. SPIE 9461, Radar Sensor Technology XIX; and Active and Passive Signatures VI, 94610O (May 26, 2015); doi:10.1117/12.2180660.

Campos, I. A., Gerstle, W. H., and Dwyer, S. F., “Effect of Composite Action on the Strength of Wood Roofs”, Journal of Structures, Volume 2015, Article ID 563025, 10 pages, http://dx.doi.org/10.1155/2015/563025, 2015.

Gerstle, W., McCarty-Glenn, T., Dwyer, S., and Gerstle, J. H., “Leakage from drill pipe casing subject to shear deformation”, Int. J. Petroleum Engineering, Vol. 1, No. 1, pp. 49-61, 2014.

Wang, Q., Pepin, M., Wright, A., Dunkel, R., Atwood, T., Santhanam, B., Gerstle, W., Doerry, A. W., and Hayat, M. M., “Reduction of Vibration-induced Artifacts in Synthetic Aperture Radar Imagery”, IEEE Trans. Geoscience and Remote Sensing, Vol. PP, No. 99,  pp. 1-11, July 9, 2013

Gerstle, Walter, Honarvar Geitanbaf, Hossein, and Asadollahi, Aziz, “Computational Simulation of Reinforced Concrete using the Micropolar State-Based Peridynamic Hexagonal Lattice Model”, Fracture Mechanics of Concrete and Concrete Structures, Proceedings of FRAMCOS 8, CIMNE, Barcelona, Spain, pp.261-270, 2013.

Wang, Q., Pepin, M., Beach, R.J., Dunkel, R., Atwood, T., Santhanam, B., Gerstle, W., and Hayat, M. M., “SAR-based Vibration Estimate using the Discrete Fractional Fourier Transform”, IEEE Transactions On Geoscience and Remote Sensing , Vol. 50, No. 10, Oct. 2012, pp. 4145-4156.

Gerstle, W., Sakhavand, N. and Chapman, S. “Peridynamic Modeling of Reinforced Concrete Lap Splice”, ASCE Engineering Mechanics Institute 2010 Conference, August 8-11, 2010, Los Angeles, CA.

Gerstle, W. Sakhavand, N. and Chapman, S. “Peridynamic and continuum models of reinforced concrete lap splice compared”, Fracture Mechanics of Concrete and Concrete Structures - Assessment, Durability, Monitoring and Retrofitting of Concrete Structures- B. H. Oh, et al. (eds), Proceedings of the 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-7), Jeju, Korea, May 23-28, 2010, pp. 306-312,  Korea Concrete Institute, Seoul, ISBN 978-89-5708-181-5.

Gerstle, W., Lenke, L.R., Reda Taha, M., Hays, J.S., Cabrera, A.S., Magallanes, J.M., Martinez, R., "Comparison of stiff tension fracture test and notched beam level II fracture tests", Fracture Mechanics of Concrete and Concrete Structures - Assessment, Durability, Monitoring and Retrofitting of Concrete Structures- B. H. Oh, et al. (eds), Proceedings of the 7th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-7), Jeju, Korea, May 23-28, 2010, pp. 696-702,  Korea Concrete Institute, Seoul, ISBN 978-89-5708-181-5.

Gerstle, W., "Progress in Developing a Standard Fracture Toughness Test for Concrete", Proceedings of the 2010 ASCE Structures Congress and the 19th Analysis and Computation Specialty Conference, May 12-15, Orlando, Florida, edited by Senapathi, Casey, and Hoit, ASCE Structural Engineering Institute, pp. 1915-1926, 2010.

Fu, R., Gerstle, W., Zimmer, P. and McGraw, J., “In-Situ Measurement of Environmentally-Induced Deformations of Telescopes”, ASCE Space 2010 Conference, March 17-22, Honolulu, Hawaii, 2009, on CD.

Gerstle, W., Sau, N. and Sakhavand, N., “On Peridynamic Computational Simulation of Concrete Structures”, proc.  Tom Hsu Symposium on Shear and Torsion in Concrete Structures, ACI SP-265, pp. 245-264, 2009.

Gerstle, W., Silling, S., Read, D., Tewary, V. and Lehoucq, R., “Peridynamic Simulation of Electromigration”, Computers, Materials and Continua, Tech Science Press, Vol. 8, No. 2, pp. 75-92, 2008.

Bazant, Z. P., Yu, Q., Gerstle, W., Hanson, J., and Ju, J., “Justification of ACI-446 Proposal for Updating ACI Code Provisions for Shear Design of Reinforced Concrete Beams”, ASCE Structural Journal, Vol. 104., No. 5, pp. 601-610, Sept.-Oct. 2007.

Gerstle, W., and Sau, N., and Silling, S. "Peridynamic Modeling of Concrete Structures", Journal of Nuclear Engineering and Design, No. 237, pp. 1250-1258, 2007.

Gerstle, W., "Book Review: Two Handbooks on Structural Steel Design", J. Structural Engng., ASCE, Vol. 129, No. 6, p. 842, June 2003.

Gerstle, W., “Toward a Meta-Model for Computational Engineering”, Engineering with Computers, Vol. 18, Issue 4, pp 328-338, Springer-Verlag, London, 2002.

Lenke, L. and Gerstle, W., “Tension Test of Stress Versus Crack Opening Displacement Using Cylindrical Concrete Specimens”, ACI SP201, pp. 189-206,  2001.

Sahu, R., Panthaki, M., and Gerstle, W., "An Object-Oriented Framework for Multidisciplinary, Multi-Physics, Computational Mechanics", Engineering with Computers, Vol.15, pp. 105-125, Springer-Verlag, London, 1999.

Gerstle, W., Lenke, L., and Heo, G., "Stress-Intensity Factor Calibration of Edge-Notched Beam", Fatigue and Fracture Mechanics, ASTM STP 1296, West Conshohocken, PA, pp. 530-549, 1997.

Gerstle, W., "Book Review: Fracture Mechanics of Concrete: Applications of Fracture Mechanics to Concrete, Rock, and other Quasi-Brittle Materials", J. Structural Engng., ASCE, Vol. 122, No. 11, Nov. 1996, pp. 1390-1391.

Gerstle, W., Xie, M., Liu, Q., and Chen, Z., "Gas-Driven Cracking in WIPP Rock Salt", Radioactive Waste Management and Environmental Restoration, Vol. 20, pp. 93-110, 1996.

Xie, M., and Gerstle, W., "Energy-Based Cohesive Crack Propagation Modeling" J. Engng. Mechanics, ASCE, Vol. 121, No. 12, 1995.

Xie, M., Gerstle, W., and Rahulkumar, P., "Energy-Based Automatic Mixed-Mode Crack Propagation Modeling" J. Engng. Mechanics, ASCE, Vol. 121, No. 8 1995.

Xie, M., Gerstle, W., and Chen, Z., "Finite Element Analysis of Combined Smeared and Discrete Mechanisms in Rock Salt", Computer Methods and Advances in Geomechanics, Vol II, Siriwardane, H.J. and Zaman, M.M. Eds., A. A. Balkema, pp. 1659-1664, 1994.

Gerstle, W., Prasad, N. N. V. and Xie, M., "Solution Method for Elastostatic Coupled BEM and FEM Analysis", Proc. Boundary Element Technology VII, Brebbia and Ingber, Eds., Elsevier Applied Science, Computational Mechanics Publications, 1992, pp. 213-226.

Gerstle, W., Rahulkumar, P., Dey, P. P. and Xie, M., "Size Effect in Reinforced Flexural Members", ACI SP-134 "Design Based on Fracture Mechanics", Gerstle and Bazant, Eds., 1992, pp. 25-45.

Gerstle, W., Dey, P.P., Prasad, N.N.V., Rahulkumar, P., and Xie, M., "Crack Growth in Flexural Members- A Fracture Mechanics Approach", ACI Structural Journal, Vol. 89, No. 6, pp. 617-625, Nov., 1992.

Gerstle, W. and Xie, M., "FEM Modeling of Fictitious Crack Propagation in Concrete", ASCE Journal of Engineering Mechanics, Vol. 118, No. 2, 1992.

Akgul, F., Gerstle, W. H. and Johnson, S. W., "Structural Design of Lunar Radio Telescope Using Interactive CAD", J. Aerospace Engineering, ASCE, Vol. 5, No. 1, Jan, 1992.

Gerstle, W. and Ingraffea, A., "Does Bond-Slip Exist?", Concrete International, American Concrete Institute, Vol. 13, No. 1, pp. 44-48, Jan. 1991.

Gerstle, W., and Ingraffea, A., "Compliance and Stress-Intensity Factor Calibration of the CENRBB Specimen Using the Boundary Element Method", International Journal of Rock Mechanics and Mining Sciences, Vol. 28 No. 1, Jan. 1991.

Gerstle, W. H. and Abdalla, J., E. "Finite Element Meshing Criteria for Crack Problems," Fracture Mechanics: Twenty-First Symposium, ASTM STP 1074, J.P. Gudas, et al., Eds., American Society for Testing and Materials, Philadelphia, pp. 509-521, 1990.

Johnson, S., Burns, J., Chua, K.-M., Duric, N., Gerstle, W. and Taylor, J., "Lunar Astronomical Observatories: Design Studies", Journal of Aerospace Engineering, ASCE, Vol. 3, No. 4, pp. 211-222, Oct. 1990.

Gerstle, W., Ingraffea, A., Perucchio, R., "Three-Dimensional Fatigue Crack Propagation Analysis Using the Boundary Element Method," International Journal of Fatigue, Vol. 10, No. 3, pp. 189-192, 1988.

Gerstle, W., Martha, L., Ingraffea, A., "Finite and Boundary Element Modeling of Crack Propagation in Two and Three Dimensions," Engineering with Computers, Vol. 2, pp. 167-183, 1987.

Ingraffea, A. R., Gerstle, W. H., Mettam, K. I., Wawrzynek, P., and Hellier, A. K., "Cracking of Welded Crane Runway Girders: Physical Testing and Computer Simulation", Iron and Steel Engineer, December 1985, pp.46-52.

Ingraffea, A. R., Gerstle, W. H., Gergely, P., and Saouma, V., "Fracture Mechanics of Bond in Reinforced Concrete", Journal of the Structural Division, American Society of Civil Engineers, Vol. 110, No. 4, April 1984, pp. 871-890.

Ingraffea, A. R., Perrucchio, R., Han, T.-Y., Gerstle, W. H., and Huang, Y.-P., "Three-Dimensional Finite and Boundary Element Calibration of the Short-Rod Specimen", Chevron-Notched Specimens: Testing and Stress Analysis, ASTM STP 855, J. H. Underwood, et al., Eds., American Society for Testing and Materials, Philadelphia, 1984, pp. 49-68.

 

Book Chapters

Read, D. T., Gerstle, W. H., and Tewary, V. K. , "Modeling electromigration using the peridynamics approach", Electromigration in thin films and electronic devices: Materials and reliability, Edited by C-U Kim, Woodhead Publishing Limited, 2011.

 

Books

Gerstle, W. “Introduction to Practical Peridynamics”, World Scientific, 2016.

Gerstle, W. and Bazant, Z., Editors, "Concrete Design Based on Fracture Mechanics", ACI SP-134, 1992.

 

Conference and Symposium Proceedings

(* indicates refereed paper; Names of Graduate Students for whom Gerstle served as Advisor are Highlighted)

 

Francisco Perez, F., Campbell, J.B., Jaramillo, M., Dunkel, R., Atwood, T., Doerry, A., Gerstle, W., Santhanam, B., and Hayat, M.M. “Exploiting synthetic aperture radar imagery for retrieving vibration signatures of concealed machinery”, Proc. SPIE 9829, Radar Sensor Technology XX, 982903 (May 12, 2016); doi:10.1117/12.2224148.

Wang, Q., Pepin, M., Dunkel, R.,  Atwood, T., Doerry, A., Santhanam, B., Gerstle, W., Hayat, M., “Reduction of Vibration-Induced Artifacts in Synthetic-Aperture-Radar Imagery using the Fractional Fourier Transform”, Proc. IEEE International Conference on Image Processing, Sept. 30 – Oct. 3, 2012, Orlando, Florida.

Wang, Q., Pepin, M., Dunkel, R., Atwood, T., Doerry, A. W.,  Santhanam, B., Gerstle, W., and Hayat, M. M., “Reduction Of Vibration-Induced Artifacts In Synthetic-Aperture-Radar Imagery Using The Fractional Fourier Transform”, submitted to International Conference on Image Processing, Orlando, Sept 30-Oct. 3, 2012.

*Gerstle, W., Sakhavand, N., Rahman, A., and Tuniki, B. K., “Simulation of Concrete using Micropolar Peridynamic Hexagonal Lattice Model”, 11th U.S. National Congress on Computational Mechanics, Minneapolis, July 25-28, 2011.

Wang, Q., M. Pepin, R. Beach, R. Dunkel, T. Atwood, A. Doerry, B. Santhanam, W. Gerstle, and M. M. Hayat, “Demonstration of Target vibration Estimation in Synthetic Aperture Radar Imagery,” The 2011 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2011), August 1–5, Vancouver, CA.

*Gerstle, W.,  Sakhavand, N.,  and Tuniki, B. K., “Peridynamic Modeling of Prestressed Concrete Beams”, Intl. Conf. on Industrial and Applied Mathematics, Vancouver, BC, Canada, July 18 – 22, 2011.

Gerstle, W., Chapman, S., and Montoya, K., “Experiences with Bridge Load Rating at UNM”, Forty-Seventh Paving and Transportation Conference, January 4, 2010 (invited presentation).

Madrid, M., Simpson, J., Santhanam, B., Gerstle, W., Atwood, T. and Hayat, M. M., “Modeling Electromagnetic Wave Interactions with Vibrating Structures”, IEEE AP-S/URSI Conference, June 1, 2009.

Namir E. Kassim, A. S. Cohen, P. C. Crane, C. A. Gross, B. C. Hicks, W. M. Lane, J. Lazio, E. J. Polisensky, P. S. Ray, K. W. Weiler, T. E. Clarke, H. R. Schmitt, J. M. Hartman, J. Craig, W. Gerstle, Y. Pihlstrom, L. J. Rickard, G. B. Taylor, S.W. Ellingson, L. R. D’Addario, R. Novarro, “Exploring the Last Electromagnetic Frontier with the Long Wavelength Array (LWA)”, 214th Meeting of the American Astronomical Society, Pasadena, CA, 7-11 June 2009.

Gerstle, W., “Computational Modeling of Nanostructures using the Peridynamic Model”, Proceedings of the International Conference on Computational & Experimental Engineering and Sciences, ICCES08, Mar 16-22, 2008: Honolulu, Hawaii, Tech Science Press, 2008.

Gerstle, W., “Peridynamics Applied to Reinforced Concrete Structures and Microchips”, Sandia National Laboratories, Albuquerque, New Mexico:  April 9, 2008.

Silling, S.A., Demmie, P.N, Foster, J. T., Gerstle, W., Warren, T. L., "Concrete Fracture and Failure Modeling with Peridynamics", Workshop on Modeling Concrete under High-Impulsive Loadings", Institute for Advanced Technology, University of Texas at Austin
Austin, TX 2007.

Gerstle, W., “Computational Modeling of Nanostructures using the Peridynamic Model”, National Institute of Standards and Technology, Boulder, Colorado:  Dec. 7, 2007.

*Gerstle, W.,Sau, N., and Aguilera, E.,, "Micropolar Peridynamic Constitutive Model for Concrete", 19th Intl. Conf. on Structural Mechanics in Reactor Technology (SMiRT 19), Toronto, Canada, August 12-17, pp. B02/1-2, 2007.

*Gerstle, W. H., Sau, N., and Aguilera, E., "Micropolar Modeling of Concrete Structures", Proceedings of the Sixth International Conference on Fracture Mechanics of Concrete Structures, Ia-FRAMCOS, Catania, Italy, June 17-22, 2007.  

McGraw, J. T., Ackermann, M. R., Williams, T., Zimmer, P.C., Gerstle, W. H., Benedict, G. F., Odewahn, S. C., Wetterer, C. J., Gamiz,  V. L., Claver, C. F., Pier, J. R., Hines, D. C.,  Schwarz, J., and the NESSI/CTI-II Research Group. "The Quest for Precision Ground-Based Astronomy: The CCD/Transit Instrument with Innovative Instrumentation (CTI-II)", Proc. American Astronomical Society Convention, Seattle, 5-10 January 2007.

Ray, York, Kerkhoff, Slack, Copeland, Munton, Banks, Gaussiran, Hicks, Paravastu, Kassim, Weiler, Polisensky, Crane, Gerstle, Pihlstrom, Taylor, Ellingson, "First Light for the Long Wavelength Development Array", Proc. American Astronomical Society Convention, Seattle, 5-10 January 2007.

McGraw, J. T., Ackermann, M. R., Williams, T., Zimmer, P.C., Gerstle, W. H., Benedict, G. F., Odewahn, S. C., Charles J. Wetterer, C. J., Gamiz,  V. L., Golden, E., Claver, C. F., Pier, J. R., Hines, D. C.,  and the NESSI/CTI-II Research Group. "The Quest for Precision Ground-Based Astronomy: The CCD/Transit Instrument with Innovative Instrumentation (CTI-II)", Proc. Advanced Maui Optical and Space Surveillance Technologies Conference, Maui, 10-14 September 2006.

*Gerstle, W. H., Roybal ,F., McGraw, J. T. and Williams, T. "Structural Design of a Unique Passive Telescope," Proceedings of ASCE Earth and Space 2006 Conference, March 6-8, Houston Texas, on CD.

*Gerstle, W., Sau, N., and Silling, S., "Peridynamic Modeling of Plain and Reinforced Concrete Structures", 18th Intl. Conf. on Structural Mechanics in Reactor Technology (SMiRT 18), Atomic Energy Press, Beijing China, August 7-12, 2005.

McGraw, J. T., Benedict, G. F., Ackermann, M. R., Zimmer, P. C., Williams, T., Gerstle, W., Wetterer, C. J., Golden, E., and the University of New Mexico NESSI Team, “The Near Earth Space Surveillance Initiative (NESSI) Precision Astrometric and Photometric Survey”, Air Force Maui Optical Supercomputing Site, 2005.

*Gerstle, W. and Sau, N., “Peridynamic Modeling of Concrete Structures”, Proceedings of the Fifth International Conference on Fracture Mechanics of Concrete Structures, Li, Leung, Willam, and Billington, Eds., Ia-FRAMCOS, Vol. 2, pp. 949-956, 2004.

McGraw, J. T. , Ackermann, M. R. , Gerstle, W. , Williams, W. T., Benedict, G. F, Wetterer, C. J., “Strip Mining the Sky: The CTI-II Photometric and Astrometric Survey”, poster presented at the American Astronomical Society Convention, Minneapolis, MN, May 29-June 2, 2005.

*Gerstle, W. and Sau, N., “Peridynamic Modeling of Concrete Structures”, Proceedings of the Fifth International Conference on Fracture Mechanics of Concrete Structures, Li, Leung, Willam, and Billington, Eds., Ia-FRAMCOS, Vol. 2, pp. 949-956, 2004.

Gerstle, W., and Cheng, P.-Y. “Constructive Topological Domain Modeling for Computational Engineering”, Proc. 7th U.S. National Congress on Computational Mechanics, July 27-July 31, 2003, Albuquerque, NM. (on CD).

*Gerstle, W., and Cheng, P.-Y. “Constructive Topological Domain Modeling for Solution of Problems with Moving Boundaries”, Moving Boundaries VII, Eds. A.A. Mammoli and C.A. Brebbia, WIT Press, pp. 3-12, 2004.

Desjarlais, L.M., Tang, J., Akbarzadeh-T., M.-R., Gerstle, W., Panthaki, M., and Sahu, R., "Applying the SoftLab/CoMeT Integrated Environment for Simulation and Control of Distributed-Parameter Systems", Abstract for WAC 2000.

Gerstle, W., Panthaki, M., Sahu, R., Desjarlais, L., "Software Architecture of a Computational Mechanics Toolkit", Abstract for WAC 2000.

G. Li, R. Jayaseelan, W. Gerstle, Investigation of hexahedral elements generated from tetrahedral elements, Proceedings of the Seventh International Conference on Numerical Grid Generation in Computational Field Simulations, ISGG, MSU, Mississippi, 2000, pp. 315-323.

Gerstle, W.H., Panthaki, M.J., and Sahu, R., "CoMeT: A Framework for Team-Based, Multiphysics Computational Mechanics", Proceedings 5th U.S. National Congress on Computational Mechanics, University of Colorado, Boulder, Colorado, Aug. 4-6, 1999, pp. 235-236. 

Gerstle, W., Marker, D., and Panthaki, M., "A Software Environment for Simulation of Deployable Optical Membrane Telescope Mirrors", 1998 Optical Society of America ILS-XIV: 14th Interdisciplinary Laser Science Conference Program p. 159, Baltimore, Maryland, Oct. 4-9, 1998.

Malcolm J. Panthaki, Walter H. Gerstle, and Raikanta Sahu, "CoMeT: A Framework for Team-Based, Multi-Physics Computational Mechanics", Proceedings of the DoD User's Conference, Houston, Texas, USA, June 1998.

Gerstle, W., Panthaki, M., Sahu, R., and Funston, M., "Software Framework for Simulation of Adaptive Optical Membrane Telescope", Proceedings, World Automation Congress 1998, May 9-14, Anchorage Alaska, TSI Press, NASA ACE Center, (on CD and in Hard Copy), 1998.

Funston, M. G., Gerstle, W., and Panthaki, M., "Quantity, Revisited: An Object-Oriented Reusable Class", Proceedings of NASA University Research Consortium Technical Conference ‘98, Huntsville, AL, Feb. 22-25, 1998, pp. 948-953.

Valerio, R. and Gerstle, W., "Finite Element Modeling of Crack Propagation - A Practical View", Proceedings of NASA University Research Consortium Technical Conference ‘98, Huntsville, AL, Feb. 22-25, 1998, pp. 165-170.

Valerio, R., and Gerstle, W., "Discussion of Gas-Driven Hydrofracture Scenario at WIPP" NM J. of Science, New Mexico Academy of Science, Vol. 37, Nov. 1997, pp. 203-218.

Gerstle, W. and Valerio, R., "Vertically-Oriented Gas-Driven Hydrofracture at WIPP" proceedings of WM '98 Conference, Tucson AZ, March 1-5, 1998 (published on CD-ROM).

Gerstle, W., and Valerio, R. "Gas-Driven Hydrofracture Scenarios at WIPP", Proceedings of the WERC/HSRC Joint Conference on the Environment, Albuquerque, NM, March 31-April 1, WERC Administrative Office, NM State University, pp. 333-335, 1998.

Sahu, R., Gerstle, W. H., and Panthaki, M. J., "CoMeT - An Object-Oriented Framework for Computational Mechanics" Proc. 4th U.S. National Congress on Computational Mechanics, Aug. 6-8, 1997, Scientific Computation Research Center, Rensselaer Polytechnic Institute, Troy, N.Y., p. 205.

Gerstle, W. H., Sahu, R., and Panthaki, M. J., "A Platform for Computational Fracture Mechanics" Proc. 4th U.S. National Congress on Computational Mechanics, Aug. 6-8, 1997, Scientific Computation Research Center, Rensselaer Polytechnic Institute, Troy, N.Y., p. 296.

*Jung, J., Dohrmann, C., Witkowski, W., Wolfenbarger, P., Gerstle, W., Mitchell, S., Panthaki, M., and Segalman, D., "A Global Optimization Approach to Quadrilateral Meshing", 6th International Meshing Roundtable, Park City, Utah, Oct. 13-15, Sandia National Laboratories, Albuquerque, NM, 1997, p. 155.

*Gerstle, W., Jung, J., Witkowski, W., Panthaki, M., "Use of Boundary Integral Method to Determine Local Characteristic Feature Size of Geometric Domains", 6th International Meshing Roundtable, Park City, Utah, Oct. 13-15, Sandia National Laboratories, Albuquerque, NM, 1997, p. 157-167.

*Panthaki, M., Sahu, R., and Gerstle, W., "An Object-Oriented Virtual Geometry Interface", 6th International Meshing Roundtable, Park City, Utah, Oct. 13-15, 1997, Sandia National Laboratories, Albuquerque, N.M., pp. 67-81.

*Malanthara, A., and Gerstle, W., "Comparative Study of Unstructured Meshes Made of Triangles and Quadrilaterals", 6th International Meshing Roundtable, Park City, Utah, Oct. 13-15, 1997, Sandia National Laboratories, Albuquerque, N.M., pp. 437-447.

*Valerio, R., Gerstle, W., Lenke, L., and Sandoval, L. "Waste-Gas Venting Mechanisms at WIPP", WERC HSRC Proceedings of the 1997 Joint Conference on the Environment, Albuquerque, NM, April 22-24, 1997, pp.534-539.

*Funston, M. G., Valerio, R., and Gerstle, W., "Creation of Quantity: An Object-Oriented Reusable Class", Proceedings of NASA University Research Consortium Technical Conference ‘97, Albuquerque, NM, Feb. 16 - 19, 1997.

*Sahu, R., Panthaki, M.J., and Gerstle, W., "CoDE - An Environment for Multi-Developer Software Development", Proceedings of Nasa University Research Consortium Technical Conference ‘97, Albuquerque, NM, Feb. 16 - 19, 1997.

*Atencio, L., Gerstle, W., Panthaki, M., and Sahu, R., "Object-Oriented Design and Development of a Computational Mechanics Toolkit", Proceedings of Nasa University Research Consortium Technical Conference ‘97, Albuquerque, NM, Feb. 16 - 19, 1997.

*Malanthara, A., Panthaki, M., Gerstle, W., and Sahu, R., "Object-Oriented Design of a Drawing Subsystem For a Computational Mechanics Toolkit", Proceedings of Nasa University Research Consortium Technical Conference ‘97, Albuquerque, NM, Feb. 16 - 19, 1997.

Gerstle, W., Xie, M., Liu, Q., and Chen, Z., "Prediction of Gas-Driven Hydrofracture at WIPP", Proceedings of the 5th Annual Waste Management Education and Research Technology Development Conference, Las Cruces, New Mexico, April 18-20, 1995, WERC Administrative Office, New Mexico State University, pp. 442-451.

Chen, Z. and Gerstle, W., "Prediction of Combined Smeared and Discrete Cracking Mechanisms", MEET'N93, Proc. of the First SES-ASME-ASCE Joint Meeting, Charlottesville, Virginia, June 6-9, 1993, C.T. Heravich and J.M. Duva, Eds., University of Virginia Press, p. 100, 1993.

Gerstle, W. and Xie, M., "Numerical Analysis of Discrete Nonlinear Fracture Mechanics", ASCE Proc. 9th Engng. Mech. Conf., College Station, Tx., Lutes, L. D. and Niedzwecky, J. M., Eds., ASCE, pp. 784-787, 1992.

Gerstle, W., Dey, P. P., Rahulkumar, P. and Xie, M., "Size Effect in Bending Failure of Reinforced Concrete Beams", Proc. 1st Intl. Conf. on Fracture Mechanics of Concrete Structures, Fracture Mechanics of Concrete Structures, Z. P. Bazant, Ed., Elsevier Applied Science, N. Y., 1992, pp. 729-734.

*Gerstle, W., Prasad, N.N.V., Cessac, K. and Kratochvil, T., "Preliminary Design of a Lunar 16 Meter Optical Telescope", Proc. 3rd International Conference on Engineering, Construction and Operations in Space, Sadeh, Sture and Miller, Eds., ASCE, 1992, pp. 2305-2316.

Xie, M., Gerstle, W. H., and Panthaki, M. J., "Fracture Analysis of Cementitious Seals for Nuclear Waste Isolation," ECF 8 Fracture Behaviour and Design of Materials and Structures, Proceedings of the Eighth Biennial European Conference on Fracture, October, 1990, Torino, Italy, pp. 786 - 791.

*Gerstle, W., and Ingraffea, A, "Does Bond-Slip Exist?", Proceedings of International Conference on Micromechanics of Failure of Quasi-Brittle Materials, Elsevier Applied Science, June, 1990, Albuquerque, NM, pp. 407 - 416.

*Akgul, F., Gerstle, W., and Johnson, S., "Computer Aided Analysis of a Lunar Radio Telescope Antenna", Proceedings of SPACE 90 Conference: Engineering, Construction and Operations in Space, April, 1990, pp. 697-706.

Nehme, J., and Gerstle, W., "Coupled Finite and Boundary Element Modeling of 2D Cracks", Developments in Mechanics, Proceedings of the Twenty-First Midwestern Mechanics Conference, Vol. 15, Ligon, J. B. et al., Eds., Aug., 1989, pp. 327-328.

Johnson, S., Burns, J., Chua, K.-M., Duric, N., Gerstle, W. and Taylor, J., "Developing Concepts for Lunar Astronomical Observatories: Interdisciplinary Team Experiences at the University of New Mexico." ASEE Annual Meeting, Lincoln NE, June 25-26, 1989.

Gerstle, W. H., Ingraffea, A. R., and Perucchio, R., "Analysis of Non-Planar, Three-Dimensional Fatigue Crack Propagation Using the Boundary Element Method and Interactive Computer Graphics", 19th National Symposium on Fracture Mechanics, ASTM, June 30, 1986.

*Gerstle, W. H., and Ingraffea, A. R., "Boundary Element Modelling of Crack Propagation in Three Dimensions", Proceedings of the 2nd Boundary Element Technology Conference, Massachusetts Institute of Technology, J.J. Connor and C.A. Brebbia, Eds., pp. 651-662, June,1986.

*Ingraffea, A. R., Gerstle, W. H., Perucchio, R., "Fracture Analysis with Interactive Computer Graphics", Boundary Element Methods in Structural Analysis, D. E. Beskos, Ed., Patras, Greece, 1986.

*Gerstle, W. H., and Ingraffea, A. R., "Error Control in Three-Dimensional Crack Modeling Using the Boundary Element Method", Advanced Topics in Boundary Element Analysis, ASME AMD-Vol. 72, pp. 205-211, 1986.

*Ingraffea, A. R., and Gerstle, W. H., "Non-linear Fracture Models for Discrete Crack Propagation", Application of Fracture Mechanics to Cementitious Composites, NATO-ARW, Northwestern University, S. P. Shah, Ed., 1984.

*Gerstle, W. H., Ingraffea, A. R., and Gergely, P., "Tension Stiffening: A Fracture Mechanics Approach", Bond in Concrete, P. Bartos, Ed., 1982, pp. 97-106.

Gerstle, W. H., Ingraffea, A. R., and Gergely, P., "The Fracture Mechanics of Bond in Reinforced Concrete", Proceedings of the Ninth U. S. National Congress of Applied Mechanics, Cornell University, June, 1982, p. 126.

 

Reports

Cordaro, T. J.; G. G . Delaplain, T. O. Townsend, W. Gerstle, “Advances in Remote Vibrometry at Sandia National Laboratories, 2004-2005,” Sandia Report SAND2006-0045, Official Use Only. Export Controlled Information, January 2006.

Gopalaratnam, V., Gerstle, W., Isenberg, J., and Mindess, S., "Dynamic Fracture: State-of-the-Art", American Concrete Institute 446.4R-04, Reported by ACI Committee 446, 2004.

J. Bredehoeft and W.H. Gerstle, "The HARTMAN Scenario Revisited: Implications for WIPP", Report: The Hydrodynamics Group, La Honda, CA, August, (1997).

W.H. Gerstle and J. Bredehoeft, "Linear Elastic Model for Hydrofracture at WIPP and Comparison with BRAGFLO Results", Report: New Mexico Attorney General, (September 1997).

Gerstle, W., Mendenhall, F., and Wawersik, W., "Prediction of Gas-Driven Hydrofracture at WIPP", UNM Departmental Report, 1996.

Darwin, D., and Gerstle, W., "Finite Element Analysis of Fracture in Concrete Structures: State-of-the-Art", American Concrete Institute 446.3R-97, Reported by ACI Committee 446, 1998. Published in In ACI Manual of Concrete Practice.

Gerstle, W., Xie, M., Panthaki, M., Labreche, D. and Christian-Frear, T., "CoMeT: An Integrated Computer Graphical Structural Zooming System", Topical Report RSI-0410, RE/SPEC, Inc., 1991.

Gerstle, W., "Finite Element Analysis of Hardened Aircraft Shelters", Report for AFOSR Summer Faculty Program, 1991.

Bicanic, N., de Borst, R., Gerstle, W., Murray, D., Pijaudier-Cabot, G., Saouma, V., and Willam, K., "Computational Aspects of Finite Element Analysis of Reinforced Concrete", International Workshop held at Columbia University, June, 1991.

Panthaki, M. J. and Gerstle, W. H., "PGraph: A Two-Dimensional Preprocessing Environment for Computational Mechanics," prepared for ARCO OIL and Gas Co., 1990.

Gerstle, W. H., "Structural Zooming Research and Development of an Interactive Graphical Interface for Stress Analysis of Cracks", NASA/American Society for Engineering Education (ASEE) Summer Faculty Fellowship Program 1989, Tiwari, S. N. (Compiler), NASA Contractor Report 181894, pp. 67-68, Sept., 1989.

Panthaki, M. J. and Gerstle, W. H., "StressGraph: A Structural Zooming System, Phase I Final Report", RE/SPEC RSI-0339, 1988.

Abdalla, J., and Gerstle, W., "A Finite Element for Arbitrarily Precise Determination of Stress Intensity Factors", UNM Bureau of Engineering Research Report CE-84(88). January, 1988.

Gerstle, W. H., and Jones, A. K., "Mechanical Properties of Crushed Salt/Bentonite Blocks", Sandia National Laboratories Report SAND86-0707, 1986.

Gerstle, W. H., "Finite and Boundary Element Modelling of Crack Propagation in Two- and Three- Dimensions Using Interactive Computer Graphics", Report 85-8, Department of Structural Engineering, Cornell University, October 1985.

Gerstle, W. H., Ingraffea, A. R., and Gergely, P., "The Fracture Mechanics of Bond in Reinforced Concrete", Report 82-7, Department of Structural Engineering, Cornell University, June 1982.

 

Chair of Graduate Student Committees (Have served on many other graduate committees)

MS Degree Students:

Bipesh Shrestha, “Study of Building Vibrations Caused by Machinery”, 2018

Anima Bista, “Validation of the State Based Peridynamic Lattice Model”, 2018

Siavash Nikravesh, “State-based Peridynamic Lattice Model”,  2017

Sushil Ghimire, “Study of Vibration for Detection and Recognition of Concealed Machinery within Buildings”, 2017

Abraham Mena Ortiz, “High Performance Computing Applied To Structural Analysis Of Concrete Structures”, 2016

Shreya Vemuganti, “Analysis of Brazilian split cylinder using the state based peridynamic lattice model”, 2016

Seth McVey, “The state-based peridynamic lattice model and reinforced concrete structures”, 2015

Aziz Asadollahi, “Simulation of Fracture of Concrete using Miropolar Peridynamics”, 2014

Raybeau Richardson, “The State-Based Peridynamic Model”, 2014

Alfred D. Sanchez III, “Searching For The Factor Of Safety: A Study Of Wood Roof Systems For Solar Photovoltaic Installations”, 2014

Hossein Honarvar, MS, “Parallel Simulation of Particle Dynamics with Application to Micropolar Peridynamic Latice Modeling of Reinforced Concrete Structures”, 2013

Ivan Campos, MS, “Reconsidering Composite Action on Strength of Wood Roof Systems”, 2013

Rahman, Asifur, MS, “Lattice-Based Peridynamic Modeling of Linear Elastic Solids”,  2012

Tuniki, Bhanu Kiran, “Peridynamic Constitutive Model of Concrete”, MS 2012

Sakhavand, Navid, “Parallel Simulation Of Reinforced Concrete Structures Using Peridynamics”, MS, 2011

McCarty-Glenn, Tess, “Leakage of Drill Pipe Casing Subject to Shear”, MS 2011

Chapman, Scott, “Clarification of the Notched Beam Level II Testing Procedures of ACI 446 Committee Report 5”, MS, 2011

Fu, Ran, “Metrology of Optical Telescope Components”, MS, 2010

Xia, Tong, “Effect Of Air On Vibration Of Structures”, MS, 2010

Ortega, Carlos, “Dynamic Gas-Solid Interaction”, MS 2008

Aguilera, Eduardo, “Elastic Size Effect Using the Peridynamic Model”, MS 2008

Roybal, Francisco, MS

Lee, Yongsub "The Effect of Air on Structural Vibrations", Masters Project, August, 2006.

Mareddy, Shilpa "An Analysis of Service Level Vibrations in a Utility Building", Masters Thesis, May, 2006.

Pei-Yuan Cheng, “A Metamodel for Computational Engineering”, Masters Thesis, December, 2003.

Ge Li, “Investigation of 3D Automatic Hexahedral Meshing Approaches”, Masters Thesis, December, 2000.

Rajanikanth Jayaseelan, “An Extensibility Mechanism for a Computational Mechanics Framework”, Masters Thesis, December, 2000.

Valerio, Robert, “Modelling Concepts Pertaining to a Gas-Driven Hydrofracture Scenario”, Masters Thesis, May, 2001.

Funston, Monica, "Quantity: A Computational Subsystem", Masters Thesis, May, 2000.

Yunlong Yang, "Blowout at WIPP Caused by an Inadvertent Penetration", Masters Thesis, May, 1999.

Paul Wolfenbarger, "Exploration of a New Unstructured Quadrilateral Mesh Generation Algorithm", Masters Thesis, December 1998.

Keehn, Sandi, Masters Degree (all course option), 1998.

Malanthara, Anish, "Automatic Delaunay Meshing", Masters Thesis, 1997.

Maberry, Steve, "Fictitious Cracks, Real Cracks, Curling Slabs, and a Search for Alternate Methods of Crack Control", Masters Project, 1997.

Bosiljevac, Thomas, "Rational Design Methods for Post-Tensioned Slabs-on-Grade", Masters Project, 1996.

Guo Yinglong, "Loading Rate Effect on Stress Cracking of High Density Polyethylene Geomembranes", Masters Thesis, 1996.

Guo, Wei, "Automatic Mesh Generation for Crack Propagation Simulation in Planar Domains", Master's, 1995.

Liu, Qing, "Modeling of Gas-Driven Hydrofracture at WIPP", Master's Thesis, 1995.

Heo, Gwanghee, "Stress-Intensity Factor Calibration of Shear Beam", Master's Thesis, 1995.

Prasad, N.N.V., "Interactive Graphical Finite Element Postprocessing", Master's Thesis, 1992.

Rahulkumar, Pakal, "A Study of the Size Effect in Concrete", Master's Thesis, December 1992.

Dey, Partha Pratim, "Fracture of Concrete Beams Including Size Effect", Master's Thesis, 1992.

Castillo, Richard, "Structural Stability of Steel Frames", Masters Project, 1991.

Akgul, F., "An Interactive Graphical Software Tool for the Computer-Aided Structural Design of a Lunar Radio Telescope Reflector", Master's Thesis, 1989.

Everhart, Robert Douglas, "Calculation of Stress and Strain Using Velocity Data from One-Dimensional Dynamic Material Properties Tests", Master's Thesis, 1989.

Abdalla, Joao Elias Filho, "A Finite Element for Arbitrarily Precise Determination of Stress Intensity Factors", Master's Thesis, 1988.

 

Ph.D. Degree Students:

Sau, Nicolas, "Peridynamic Modeling of Reinforced Concrete Structures", Ph.D., expected to be completed in 2007.

Sahu, Raikanta, "An Object-Oriented Framework for Computational Mechanics", Ph.D., 1998.

Xie, Ming, "Finite Element Analysis of Discrete Fracture", Ph.D., 1995.

Nehme, J. A., "Coupled Finite- and Boundary-Element Modeling of Crack Propagation", Ph.D., 1990.

 

Student Projects Supervised

AISC/ASCE Steel Bridge Building Competition: 2003, 2002, 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992

Advisor for NSF Research Experiences for Undergraduates in Civil Engineering Program:

            1996 Leslie Sandoval

            1994 Cyrus Morrow, Jennifer Biggs

            1993 Rita Dominguez

            1992 Reagan Santelle

            1991 Thomas Kratochvil

            1990 Audrey Blea

Advisor for "Gifted" Highschool Students:

            1996 Kyle Fenton, Valley High School

            1992 John Woodruff, Eldorado High School

            1990 Kirk Cessac, Eldorado High School


 

University, School, and Departmental Service

University Committees

Faculty Senate Research Council, Chair, 2012-2014

Faculty Senate Research Policy Committee, Chair, 2012-20014

Faculty Senate Research Policy Committee, 2009-20011

Faculty Senate Library Committee, 2005 - 2007

Computer Use Committee, 1993-1998

CIRT Site License Committee, 1993-2000

School of Engineering Committees

Member, Task Force for Hewlett-Packard Computer Proposal

Member, Task Force for Maui High Performance Computing Center Proposal

Member, Scientific and Engineering Computing Committee, 1996-present

Member, Minority Engineering, Math, and Science (MEMS) Committee

Member, SOE Computer Committee

Department of Civil Engineering Committees

Curriculum Committee, 2009 –

ABET Committee, 2009 -

Chair, Structures Faculty Search Committee, 2002-2003

Departmental Y2K Coordinator, 1999

Chair, Computer and Survey Committee, 1988-present

Chair, Library Committee, 1986-1987

 

Software Projects

CoMeT: Computational Mechanics Toolkit.

pdQ: Parallel Particle Simulation Software

SPLM: State-based Peridynamic Lattice Model

 


 

Teaching

Courses taught (by semester)

 

Course/Semester

Number of Number of Students

Progress on Relevant Objectives (Raw)

Excellent Teacher (Raw)

Excellent Course (Raw)

Summary Evaluation Course Evaluation (Raw)

 

IDEAS FORMS:

CE411/511, Spring 2018

11

 

 

 

 

 

CE502, Fall 2017

7

 

 

 

 

 

CE424/CE524, Fall 2017

14

 

 

 

 

 

CE302, Spring 2017

19

 

 

 

 

 

CE502, Fall 2016

16

 

 

 

 

 

CE424/CE524, Fall 2016

24

 

 

 

 

 

CE302, Spring 2016

21

 

 

 

 

 

CE424/CE524 Steel Design, Fall 2015

28

 

 

 

 

 

CE598-05 Practical Peridynamics, Fall 2015

17

 

 

 

 

 

Spring 2015, On Sabbatical Leave

NA

NA

NA

NA

NA

 

Fall 2015, On Sabbatical Leave

NA

NA

NA

NA

NA

 

CE302, Spring 2014

53

4.2/5.0

4.3/5.0

4.2/5.0

4.3/5.0

 

CE502, Fall 2013

7

3.8/5.0

4.0/5.0

3.6/5.0

3.8/5.0

 

CE302, Fall 2013

26

3.9/5.0

4.1/5.0

4.0/5.0

4.0/5.0

 

CE302, Spring 2013

40

3.9/5.0

4.2/5.0

4.1/5.0

4.1/5.0

 

CE424, Steel Design, Fall, 2012

18

4.2/5.0

3.9/5.0

4.1/5.0

4.1/5.0

 

CE598, Fracture Mechanics, Fall 2012

13

4.2/5.0

4.7/5.0

4.1/5.0

4.3/5.0

 

CE691, Spring 2012

38

NA

NA

NA

 

 

CE310, Spring 2012

21

4.1/5.0

4.1/5.0

4.2/5.0

4.2/5.0

 

CE308, Spring 2012

27

3.9/5.0

4.0/5.0

3.9/5.0

4.0/5.0

 

CE424/524 Fall 2011

15

4.0/5.0

4.6/5.0

4.5/5.0

4.3/5.0

 

CE502 Fall 2011

16

4.4/5.0

4.9/5.0

4.9/5.0

4.7/5.0

 

CE308 Spring 2011

31

3.7/5.0

3.7/5.0

3.9/5.0

3.8/5.0

 

CE371 Spring 2011

17

3.7/5.0

4.4/5.0

3.9/5.0

4.0/5.0

 

CE502, Fall 2010

25

3.8/5.0

4.3/5.0

4.1/5.0

4.0/5.0

 

CE424/CE524, Fall 2010

16

3.6/5.0

3.8/5.0

3.7/5.0

3.7/5.0

 

CE310, Spring 2010

31

3.9/5.0

4.2/5.0

4.1/5.0

4.1/5.0

 

CE371, Spring 2010

7

4.2/5.0

4.3/5.0

3.2/5.0

4.0/5.0

 

CE304, Statics and Dynamics; F09

16

3.5/5.0

4.5/5.0

3.8/5.0

3.9/5.0

 

Course/Semester

Number of Number of Students

Progress on Relevant Objectives (Raw)

Excellent Teacher (Raw)

Excellent Course (Raw)

Summary Evaluation Course Evaluation (Raw)

 

CE424, Structural Steel Design; F09

8

3.5/5.0

3.4/5.0

3.6/5.0

3.5/5.0

 

CE524, Structural Steel Design; F09

6

3.3/5.0

3.8/5.0

3.8/5.0

3.6/5.0

 

CE502, Finite Element Analysis; S09

13

4.0/5.0

4.3/5.0

3.8/5.0

4.1/5.0

 

CE310, Structural Design; S09

27

3.7/5.0

3.8/5.0

3.9/5.0

3.8/5.0

 

CE304, Statics and Dynamics; F08

44

2.7/5.0

2.9/5.0

2.4/5.0

2.7/5.0

 

CE424/524, Structural Steel Design; F08

26

3.0/5.0

3.6/5.0

3.4/5.0

3.3/5.0

 

S08 (on sabbatical leave)

NA

NA

NA

NA

NA

 

F07 (on sabbatical leave)

NA

NA

NA

NA

NA

 

ICES FORMS:

Median ICES student ratings on a scale of 6=excellent, 1=very poor for Course, Instructor, and Content (General)

 

Median ICES student ratings on a scale of 5=excellent, 1=very poor for Instructor Knowledge and Instructor Enthusiasm

CE310, Structural Design; S07

17

4.7

4.5

4.8

3.9

4.1

CE502, Finite Element Analysis; S07

15

5.6

5.7

5.6

4.8

4.7

CE691, Civil Engng. Seminar; F06

33

NA

NA

NA

NA

NA

CE304, Statics and Dynamics; F06

45

5.3

5.7

5.5

4.6

4.7

CS151  MatLab Computing; F06

103

NA

NA

NA

NA

NA

CE310, Structural Design; S06

19

5.2

5.4

5.4

4.7

4.6

CE502, Finite Element Analysis; S06

57

5.1

5.6

5.2

4.7

4.7

CE491, Design Competitions; F05

11

NA

NA

NA

NA

NA

CE491, Design Competitions; S05

11

NA

NA

NA

NA

NA

CE502, Finite Element Analysis; S05

11

5.6

5.6

5.6

4.9

4.9

CE310, Structural Design; S05

22

5.3

5.3

5.3

4.7

4.6

Course/Semester

Number of Number of Students

Progress on Relevant Objectives (Raw)

Excellent Teacher (Raw)

Excellent Course (Raw)

Summary Evaluation Course Evaluation (Raw)

 

CE304, Statics and Dynamics; F04

61

4.5

5.0

4.6

3.7

3.9

CE501, Adv. Mech. Matls; F04

5

5.0

5.6

5.3

4.6

5.0

CE502, Finite Element Analysis; S04

11

5.2

5.3

5.3

4.6

4.6

CE308, Structural Analysis; S04

27

5.3

5.3

5.4

4.7

4.7

CE310, Structural Design; S04

27

5.1

5.3

5.2

4.7

4.6

CE501, Adv. Mech. Materials; F03

17

5.3

5.5

5.4

4.5

4.4

CE304, Statics and Dynamics; F03

54

5.1

5.2

5.0

4.6

4.6

CE310, Structural Design; S03

23

4.5

4.5

4.8

4.2

4.2

CE502, Finite Element Analysis; S03

7

5.5

5.8

5.3

5.0

5.0

CE424, Stuctural Steel Design; S03

11

4.0

3.9

4.3

4.3

4.2

CE501, Adv. Mech. Materials; F02

22

4.9

4.9

5.1

4.7

4.6

CE304, Statics and Dynamics; F02

45

5.0

5.1

4.9

4.5

4.6

CE424, Struct. Steel Design; S02

11

5.3

5.1

5.3

4.6

4.6

CE502, Finite Element Analysis; S02

9

4.8

4.8

5.2

4.6

4.6

CE 501, Adv. Mech. Materials; F01

8

4.5

4.0

4.8

4.5

4.5

CE352, Comp. Appl.. in CE; F01

20

2.8

4.2

2.8

4.0

3.8

CE518, Structural Stability; F01

10

5.1

5.1

5.2

4.6

4.6

(On Sabatical Leave) S01

NA

NA

NA

NA

NA

NA

(On Sabatical Leave) F00

NA

NA

NA

NA

NA

NA

CE424, Structural Steel Design; S00

9

4.9

4.9

4.9

4.7

4.6

Course/Semester

Number of Number of Students

Progress on Relevant Objectives (Raw)

Excellent Teacher (Raw)

Excellent Course (Raw)

Summary Evaluation Course Evaluation (Raw)

 

CE502, Finite Element Analysis; S00

7

5.3

5.3

5.2

5.0

4.7

CE501, Adv. Mech. Matl.; F99

12

5.1

5.5

5.5

4.7

4.7

CE202, Statics; F99

20

4.2

3.8

4.9

4.6

4.2

CE502, Finite Element Analysis; S99

12

5.3

5.6

5.1

4.7

5.0

CE424/510 Strt. Steel Design; S99

16

4.6

4.5

4.6

4.3

4.2

CE518, Structural Stability; F98

9

5.3

5.3

5.3

5.0

5.0

CE202, Statics; F98

21

5.6

5.6

5.6

4.7

4.6

CE502, Finite Element Methods; S98

11

5.0

5.5

5.1

5.0

5.0

CE551-4 Fracture Mechanics; S98

7

5.1

5.1

5.0

4.7

4.7

CE513, Design of Strct. Systems; F97

6

5.0

5.6

5.3

5.0

4.7

CE691, Civil Engng. Seminar; F97

26

NA

NA

NA

NA

NA

CE502, Finite Element Analysis; S97

9

5.0

5.2

5.1

5.0

4.5

CE310, Structural Design; S97

33

5.3

5.3

5.2

4.6

4.6

CE401, Adv. Mech. Matls.; F96

14

4.8

4.9

4.9

4.7

4.6

CE518, Theory of Stblty.; F96

7

5.3

5.3

5.3

4.7

4.7

CE310, Struct. Design; S96

32

NA

NA

NA

NA

NA

CE502, Finite Element Analysis; S96

11

5.6

5.7

5.6

4.7

4.7

CE499, Capstone Design; S96

30

NA

NA

NA

NA

NA

CE416, Design of Struct. Syst.; F95

8

4.8

5.0

4.5

4.5

4.7

CE302, Mechanics of Materials; F95

10

5.6

5.6

5.5

4.7

4.7

Course/Semester

Number of Number of Students

Progress on Relevant Objectives (Raw)

Excellent Teacher (Raw)

Excellent Course (Raw)

Summary Evaluation Course Evaluation (Raw)

 

CE502, Finite Element Analysis; S95

11

4.7

5.0

4.9

4.7

4.7

CE499, Capstone Design; S95

25

NA

NA

NA

NA

NA

CE308, Structural Analysis; F94

5

3.3

3.8

3.3

4.0

3.3

CE551-3, Fracture Mechanics; F94

10

5.1

5.6

5.1

4.7

4.7

(On Sabatical Leave) S94

NA

NA

NA

NA

NA

NA

(On Sabatical Leave) F94

NA

NA

NA

NA

NA

NA

CE502, Finite Element Analysis; S93

15

4.8

5.6

4.8

4.6

4.7

CE551, Fracture Mechanics; S93

7

5.3

5.6

5.0

4.5

4.7

CE491, Student Bridge Project; S93

8

NA

NA

NA

NA

NA

CE308, Struct. Analysis; F92

15

6.0

6.0

5.7

5.0

5.0

CE202, Statics; F92

25

4.6

4.8

4.4

4.7

4.6

CE421, Struct. Dynamics; F92

8

NA

NA

NA

NA

NA

CE302, Mech. of Matls; Sum92

9

5.5

5.5

5.3

4.7

4.7

CE551-8, Inelastic Analysis; S92

8

5.3

5.7

5.5

4.7

5.0

CE502, Finite Element Analysis; S92

15

5.4

5.4

4.9

4.6

4.7

CE416, Design of Struct. Syst.; S92

6

4.5

4.5

4.3

4.6

4.5

CE551-8, Fract. Mechanics; F91

9

5.1

5.6

5.0

4.6

4.7

CE308, Struct. Anal.; F91

15

5.1

5.1

4.8

4.6

4.6

CE416, Design of Struct. Syst.; S91

17

4.4

4.8

4.5

3.8

4.6

CE308, Struct. Anal.; S91

21

5.3

5.6

5.2

4.7

4.7

CE502, Finite Element Analysis; S91

12

5.6

5.6

5.6

4.5

4.6

CE202, Engineering Statics; F90

45

3.8

3.5

3.5

4.0

3.7

CE308, Struct. Anal; F90

12

4.9

5.0

4.3

4.7

4.4

Course/Semester

Number of Number of Students

Progress on Relevant Objectives (Raw)

Excellent Teacher (Raw)

Excellent Course (Raw)

Summary Evaluation Course Evaluation (Raw)

 

CE518, Struct. Stab.; F90

9

5.1

4.7

5.1

4.1

4.7

CE202, Engineering Statics; Sum90

15

5.2

5.3

5.1

4.7

4.7

CE502, Finite Element Analysis; S90

13

4.8

4.8

4.9

4.3

4.6

CE416, Design of Struct. Syst.; S90

8

5.6

5.6

5.6

4.6

4.7

CE478, Dsgn. Tmp. Strct.; F89

13

4.7

4.7

4.5

3.9

4.1

CE491, Comp. Appl. in CE; F89

10

4.8

5.0

4.7

NA

NA

CE416, Design of Struct. Syst.; S89

12

NA

NA

NA

NA

NA

CE551, Adv. Topics in FEM; S89

4

NA

NA

NA

NA

NA

CE502, Finite Element Analysis; F88

17

5.1

5.2

5.1

4.4

4.7

CE491, Comp. Appl. in CE; F88

3

NA

NA

NA

NA

NA

CE551, Adv. Topics in FEM; S88

8

4.9

5.0

4.8

3.3

4.6

CE452, Comp. Appl. in CE; S88

6

5.0

5.3

5.0

4.7

4.7

CE502, Finite Element Analysis; F87

14

5.0

4.8

4.8

4.0

4.6

CE416, Design of Struct. Syst.; S87

7

4.3

5.6

4.3

4.6

4.6

CE324, Structural Steel Design; F86

8

4.5

5.6

5.2

5.0

4.6

CE502, Finite Element Analysis; F86

12

5.4

5.4

5.2

4.7

4.7

 

Software Projects

CoMeT: Computational Mechanics Toolkit.

pdQ: Parallel Particle Simulation Software

SPLM: State-based Peridynamic Lattice Model