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 Expert  721951

Expert in Mechanical Engineering Design and Prototype Development

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 received a Ph.D. in mechanical engineering from the University of California, Berkeley (UCB), with an emphasis in composite manufacture and analysis. His Ph.D. dissertation dealt with manufacturing analysis for axisymmetric composite structures. Part of the research included building a graphite-epoxy composite pressure vessel, finite element analysis, and subsequent destructive testing to compare predicted stress levels to actual results. A composite shell was then built and used for a meteorological study carried out by the UCB Physics Department.

Expert is highly proficient in AutoCAD and SolidWorks. He has extensive experience in machinery design and solid modeling. He is a "Certified SolidWorks Professional," having completed three courses in SolidWorks and a rigorous examination demonstrating proficiency in parts, assemblies, surfaces, sheet metal design, and drawings. He is an active member in the SolidWorks community in the San Diego area, continuously learning and improving his expertise. Expert also has significant experience in many computer aided design applications such as MathCAD, Working Model, Cosmos, LabView, Excel, and Lotus.

Expert was employed for eight years in the Hollow Fiber Membranes Department of The Dow Chemical Company. His duties included design, development and testing of hollow fiber spinning of solvent-based polymer systems. He also was involved in coextrusion of thermoplastics for polymer optical fiber applications. His expertise is in design of the spinneret, but his knowledge extends throughout the extrusion process, as well as post-processing of the hollow fibers to create a porous, semi-permeable membrane capable of separating air into its two major components: oxygen and nitrogen.

Expert has significant experience in the design of food processing equipment. He worked for Jif-Pak Manufacturing, Inc., in Carlsbad, California, as a Senior Mechanical Design Engineer. Jif-Pak makes casing nets for processing of hams and other meat products. Expert was responsible for designing pneumatic equipment for stuffing the nets and removing them from hams after the smoking process. The work involved sheet metal design, stainless steel framing, and pneumatic components to provide machines that were rugged, easily cleaned, efficient, and capable of high throughput.

Expert worked in the "Polyolefins Research" group of The Dow Chemical Company in Freeport, Texas. His particular emphasis was in flexible packaging. He is very knowledgeable in multilayer coextrusion of cast and blown films. He is the co-owner a US patent which deals with the method for improving the bond strength of certain polymers to polyimides. Some of the work involved improving the method for production of blown films, including special techniques for producing Saran™ films and packaging products.

Expert received a Master of Science degree in mechanical engineering from the Massachusetts Institute of Technology. He studied under Professor Nam P. Suh in the Polymer Processing Program, part of the Laboratory for Manufacturing and Productivity. He has extensive knowledge in polymer extrusion, injection molding, thermoforming, films, fibers, molecular orientation, and polymer crosslinking mechanisms.


composite failure analysis


composite material processing


computer-aided design


computer-aided mechanical design


personal computer-based computer-aided engineering


mechanical computer-aided engineering


extrusion-die spinneret


food machinery


polymer film production


polymer processing


prototype development

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Los Angeles, California;  San Diego, California;  Long Beach, California;  Santa Ana, California;  Anaheim, California;  Riverside, California;  Glendale, California;  Huntington Beach, California;  San Bernardino, California;  and Chula Vista, California.

Often requested
with this expert:

Mechanical Design: Automated Machinery, Rotating, Assembly,...
Industrial Design, Product Development, Rapid Model Making,...
Automated Machinery, Machinery Design, Mechatronic Design,...
Electrical Engineering of Power & Control Systems,...

Year   Degree   Subject   Institution   Honors
1990   Ph.D.   Mechanical Engineering   University of California, Berkeley  
1984   M.S.   Mechanical Engineering   MIT  
1981   B.S.   Mechanical Engineering/Materials Science   University of California, Davis   High Honors

Work History:
Years   Employer   Title   Responsibilities

2001 to




Independent Consultant


1991 to




Vice President


At Berkeley, he is involved in design, prototype development and expert witness testimony on mechanical engineering issues.

2011 to 2014


Quantum Energy Storage


Principal Mechanical Engineer


Lead engineer in of a team developing a mechanical energy storage device. Responsible for all phases of development including design, fabrication, testing, analysis, development, and manufacturing. This product promises to be a breakthrough in renewable energy systems.

2011 to 2014


Iris International


Principal Mechanical Engineer


Responsible for all mechanical aspects of a medical device for real-time characterization of white blood cells. Integration of optics, fluidics, sample transport, and hematology into one machine.

2005 to 2006


Acme Spine Riverside


Senior Mechanical Engineer


Design and product development of medical implants, particularly concerning spinal implants and associated tooling. Projects included design and manufacturing of AMA approved trays, insertion tools and implants.

2003 to 2005


QTL Biosystems


Senior Mechanical Engineer


Design, development, testing and prototype manufacturing of a hand-held biosensor device. Adaptation of principles to a continuous monitoring system. Experience included electromechanical design, fluid flow, and chemical assay handling.

2001 to 2003


Torrey Mesa Research Institute


Senior Staff Mechanical Engineer


Design, fabrication, and testing of scientific apparatus for a leading-edge genetic research facility. Significant projects include automation of experiments, robotic manipulators, and high-throughput screening of plant-based genetic material.

1999 to 2001


Jif Pak Manufacturing, Inc.


Director of Engineering


Expert is responsible for the design, development and project management of machines for the meat packing industry.

Career Accomplishments:

Expert is a member the American Society of Mechanical Engineers (ASME) and Tau Beta Pi.


Expert is a registered Professional Engineer in California.

He is also a Certified SolidWorks Professional.

Publications and Patents Summary

Expert has 5 patents

Selected Publications and Publishers  
 - UC Berkeley  
 - MIT  

Consulting Services:
Selected Consulting Examples:
  • Expert was responsible for the design, development and testing of a nested PID temperature control system for a blod monitoring system.
  • He designed and fabricated a high-tech fabric coating line.
  • And he was involved in the design and fabrication of a processing line for a hollow fiber membrane air separation system.
Recent Client Requests:
  • Expert for consulting on Compact Shelving/High Density Shelving.
  • "Hollow fiber" manufacturing potting expert for consulting on Development of Static Potting Method for Hollow Fiber based Single-Use Product.
  • Solidworks expert california for consulting on Onsite Training.
  • Mechanical engineering design expert for consulting on bundling dielectric elastomer fibers.
  • Expert in epoxy tubesheets- membrane products.
  • Expert in Scale deposits (BaSO4) in Oil Well
  • Expert for consulting on Vibration on Electromechanical Solar tracker System.
  • Expert in diapers.
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:
Expert Witness Experience Summary:
He has been deposed for approximately 20 legal cases involving mechanical design, failure, and manufacturing defects.

He has testified in court on two occasions involving mechanical engineering matters.

Recent Litigation Client Requests:
  • Expert for consulting on retail cash recycling machines.
  • Mechanical engineering expert for consulting on verification of calibration of a press machine for commerce and seafood inspection.
  • Mechanical engineering expert for consulting on invalidity of a patent.
  • Expert in mechanical engineering and prototyping for litigation case involving proper machine function.
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
Spanish   Expert is fluent in Spanish.


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