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 Expert  722077

Expert in Mechanical and Electrical Design and Failure Analysis

Available for your Consulting and Expert Witness Needs

California (CA)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise: Listed with other top experts in: 
Expert has used applied mechanics in a wide variety of design and failure analysis cases. For example, he designed dampers for the Golden Gate Bridge. The analysis in this case required a heat transfer and energy balance to determine the applied damping as well as an assessment of structural integrity of all components.

applied mechanics




structural mechanics

He has performed dynamic analyses on many devices and structures. Examples include luggage carts on trains for the cart manufacturer, rolling of cars, trucks and wheelchairs in accidents, the lifting and setting of twelve 10-inch diameter pipes at once using a hooking crane, analysis of medical implants, and assessment of the Golden Gate Bridge movement in an earthquake. Our most advanced dynamic analysis software will create a video of the resulting dynamics for observation as well as output the resulting loads, stresses, and strains.



load (force)

He has performed fracture assessments on pipes (including the Alaska pipeline), vessels, columns, airplane and helicopter engine parts as well as many other components. His company has the capability to develop simple models for use by their customers to perform sophisticated elastic plastic finite element assessments including mechanical, thermal, and residual stress loads. He is an expert in API 579, Fitness-For-Service evaluations.

fracture mechanics

Expert has experience assisting in the design of a wide variety of machinery and equipment. Examples include: machines for making cans and filling bottles; damping devices for shaker tables, bridges, towers, and computer-making machines; aircraft engine components, and testing equipment for medical devices, refinery equipment, and material evaluation.



machine design


machinery design


mechanical device design


mechanical engineering

Mechanical joining can be accomplished in a wide variety of ways: bolts and screws, welding, brazing and soldering, and a wide variety of glues and adhesives. He has a great deal of experience designing connections, evaluating connection failures and testing joints in his laboratory.

mechanical joining

Stress and strain analysis for unusual situations is a specialty. He has assisted Lawrence Livermore Laboratory in assessing the stresses and strains in explosion containment vessels (he assembled and installed the high-speed strain data acquisition system) and determined the residual stresses in nuclear waste containers. He has assisted the U.S. Navy in evaluating the stresses, strains, and temperatures in submarine components and assisted virtually all the oil companies in evaluating the stresses, strains, and temperatures in pipes (high temperature, gauged, vibrating, etc.), vessels, pumps, turbines, and other operating equipment.

shear strength


strain analysis


thermal stress

Statics is usually the first assessment method applied to a mechanical or structural device that has failed, tipped over, or been involved in a collision or impact. A "free-body-diagram" is developed to balance and determine loads and moments. In a dynamic analysis, the acceleration/deceleration forces of the various masses involved are added to the same equations. Expert has worked on several cases involving the tip-over of cranes, wheelchairs, forklifts, and scaffolding.



static balance


mechanical failure


mechanically fastened joint

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: San Jose, California;  San Francisco, California;  Sacramento, California;  Oakland, California;  Stockton, California;  Fremont, California;  Modesto, California;  Salinas, California;  Santa Rosa, California;  and Hayward, California.

Often requested
with this expert:

Workplace Safety, Product Safety, Mechanical Engineering,...
Compressor Design and Evaluation
Expert for UL Certification CE Mark NFPA Hazardous...
HVAC Design, DDC Control, Fluid Dynamics, Constructability

Year   Degree   Subject   Institution  
1993   Ph.D. in Mechanical Engineering   Mechanical/Electrical Design   University of California at Berkeley  
1981   M.S. in Mechanical Engineering   Material Behavior   University of California at Berkeley  
1980   B.S. in Mechanical Engineering   Material Behavior   Michigan Technical University  

Work History:
Years   Employer   Department   Title   Responsibilities

1990 to







Expert's responsibilities are mechanical and electric engineering consultation and company management.

1978 to 1989


Chevron corp


Engineering Department




He performed design and analysis of process equipment.

Career Accomplishments:

Expert is a member of ASME and the Vibration Institute


He is a licensed Professional Engineer in mechanical engineering.

Publications and Patents Summary

He is the authour of a patent and seven publications.

Government Experience:
Years   Agency   Role   Description
2000 to   Lawrence Livermore Labs   Measure strains during explosion   Expert sets up and measures 32 channels of strain gage data. Samples are gathered at 50,000 samples per second on all channels during explosion tests.
1999 to 1999   Lawrence Livermore Labs - Yucca Mountain   Measure residual stress in nuclear waste caskets   He determined residual stresses in prototype nuclear waste caskets.
1998 to 1998   U.S. Navy   Assess bearings on submarine   He assessed bearings on a submarine drive system.

Consulting Services:
Selected Consulting Examples:
  • Expert conducted an investigation and determination of a refinery explosion. He assemble a 2-D time line of possible scenarios. He analyzed process equipment remains, and determined that a compressor house explosion buckled an erroded pipe causing it to rupture and released a flammable hydrocarbon at high temperature and pressure.
  • Static and dynamic computer model of an aircraft engine connecting rod showed preload torque was inadequate, allowing the bolted connection to flex and resulting in a fatigue failure.
  • Tests of wall heaters for a California utility revealed why the heat exchangers were cracking and exposing tenants to carbon monoxide.
  • Assessment of automobile roof crush tests showed why the windshield must remain attached to prevent roof structural collapse.
Recent Client Requests:
  • Expert in ceramic fracture capacitor for consulting on detecting cracks in ceramic capacitor.
  • Expert in wheelchairs for consulting on USA and European market.
  • Heat transfer modeling expert for consulting on heat transfer modeling of electromechanical medical device.
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:
  • Expert for consulting on shear plate failure litigation case.
  • Expert in fork lift trucks for consulting on materials review.
  • Expert for consulting on stability of industrial chiller regarding an industrial accident.
  • Expert in iintota for consulting on needed for Strain gage.
  • Expert in mechanical engineering for consulting on fire risk product analysis.
  • Expert in medical oxygen concentrator for consulting on oxygen concentrator.
  • Wheel chair expert for consulting on defective leg rest "lock" on wheelchair.
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.

International Experience:
Years   Country / Region   Summary
1989 to 1993   Canada   He determined the cause of the SynCrude refinery fire.
1999 to 2000   Kuwait   Assessment of Kuwait National Oil Company refinery coke drums.


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