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 Expert  713166

Expert in Geomechanics and Material Testing

Available for your Consulting and Expert Witness Needs

Arizona (AZ)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise:

Listed with other top experts in: 

Expert has applied numerical methods and constitutive models for a wide range of soil-structure interaction problems. He has in-depth knowledge of rock mechanics, soil mechanics, and groundwater flow modeling. His knowledge of geotechnical engineering allows him to answer complex questions on offshore structures, earthquake-resistant structures, and underground facilities.

Expert is internationally known for fundamental research and applications covering a wide range of engineering problems. He has developed and applied realistic material models and computational procedures for characterizing the behavior of soils, rocks, concrete, ceramics and electronic semiconductor materials, and interfaces and joints. Sixteen books authored or edited by him and over 245 papers are used in academia and in practice.

Expert has designed and constructed new devices for mechanical and nondestructive testing of materials and interfaces under static and cyclic loading with environmental effects such as fluids.

A significant portion of Expert's recent research has involved developing a unified constitutive modelling approach (called the disturbed state concept) for characterizing thermomechanical response of electronic packaging materials. This research involves such factors as elastic, plastic, and creep strains as well as stress paths, microcracking, fracture and damage, fatigue, and cycles to failure. This work also involves calibration of models from laboratory test data on solder interfaces and ceramic materials as well as the development of advanced thermomechanical and nondestructive tests (electronic speckle pattern interferometry) leading to advanced computer procedures for design, reliability, and manufacturing of chip-substrate systems.

Expert has developed new computational procedures and testing devices for free surface flow (in porous media) and transport of salt water and contaminants.

Expert has developed technology for manufacturing construction materials on the moon from lunar simulants with fiber admixtures through a process of thermal liquefaction via solar energy without the use of water. The resulting materials are called intermediate ceramic composites (ICC).




geotechnical engineering


structural dynamics


geotechnical failure


computational method


materials science modeling


deformation modeling


materials testing


thermomechanical analysis


liquid flow through porous media


space-manufactured material

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Phoenix, Arizona;  Tucson, Arizona;  Mesa, Arizona;  Glendale, Arizona;  Scottsdale, Arizona;  Chandler, Arizona;  Tempe, Arizona;  Gilbert, Arizona;  and Peoria, Arizona.

Year   Degree   Subject   Institution  
1968   PhD   Engineering Mechanics, Civil Engineering   University of Texas-Austin  
1966   MS   Civil Engineering   Rice University  
1959   BS   Civil Engineering   University of Bombay  

Work History:
Years   Employer   Title  

1989 to


(Undisclosed University)


Regents' Professor


1981 to




Professor & Director, Engineering Mechanics, Geomechanics and Structural Mechanics


1974 to 1981


Virginia PolytechnicI Institute and State University


Professor, Civil Engineering


1968 to 1974


U.S. Army Waterways Experimental Station,Vicksburg, Mass .




Career Accomplishments:

He is a member of the ASCE, ASME and Comp. Mechanics.


P.E. (Mississippi)

Professional Appointments

He is the President of an International Association(Computer Methods and Advances in Geomechanics).


He has received the Meritorious Civilian Service Award by the U.S. Corps of Engineers, the Senior U.S. Scientist Award of the Alexander von Humboldt Foundation (Germany), the Medal for Outstanding Contributions by the International Association for Computer Methods and Advances in Geomechanics, and the Medal from the Mechanics Society of the Czechoslovakian Academy of Sciences.

Publications and Patents Summary

Expert has published over 245 technical papers and 16 books. He is the general editor of the International Journal for Numerical Analytical Methods for Geomechanics, an Editorial Board Member for eight major journals.

Selected Publications and Publishers  
 - CRC Press  
 - Prentice Hall Inc  

Government Experience:
Years   Agency   Role   Description
1968 to 1974   U.S. Army Engineer Waterways Expt. Station   Research Civil Engineer   Applied research in civil engineering

Consulting Services:
Recent Client Requests:
  • Mapping expert for consulting on underground mine 3-D topography.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Recent Litigation Client Requests:
  • Soil expert for consulting on an analysis to determine geographical location of its origin.
  • Expert in soils for consulting on mechanics involved in the angle of repose theory, fluidization and the intrusion into leaching chambers.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

Language Skills:
Foreign Language   Description
English   Excellent
German   Little
Hindi   Good

Additional Skills and Services:

Have offered and taught a number of courses in computer (finite element) methods and material modeling and testing.

Other Skills and Services

Development of laboratory test devices and field measurements.


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