Expert Details

Expert in Geomechanics and Material Testing

Expert ID: 713166 Arizona, USA

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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).

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 - Peoria, Arizona

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Education

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

Work History

Years Employer Title Department Responsibilities
Years: 1989 to Present Employer: Undisclosed Title: Regents' Professor Department: Responsibilities:
Years: 1981 to Present Employer: Undisclosed Title: Professor & Director, Engineering Mechanics, Geomechanics and Structural Mechanics Department: Responsibilities:
Years: 1974 to 1981 Employer: Virginia PolytechnicI Institute and State University Title: Professor, Civil Engineering Department: Responsibilities:
Years: 1968 to 1974 Employer: U.S. Army Waterways Experimental Station,Vicksburg, Mass . Title: Engineer Department: Responsibilities:

Government Experience

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

Career Accomplishments

Associations / Societies
He is a member of the ASCE, ASME and Comp. Mechanics.
Licenses / Certifications
P.E. (Mississippi)
Professional Appointments
He is the President of an International Association(Computer Methods and Advances in Geomechanics).
Awards / Recognition
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.

Additional Experience

Training / Seminars
Have offered and taught a number of courses in computer (finite element) methods and material modeling and testing.
Other Relevant Experience
Development of laboratory test devices and field measurements.

Language Skills

Language Proficiency
English Excellent
German Little
Hindi Good

Fields of Expertise

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