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Biomaterials and Product Development R&D for Orthopedic, Cardiovascular, and Other Implants
Expert has helped assemble, and been lead author on 510(k) and IDE applications to the FDA. This has often included telephone conversations, and occasionally personal visits, with the FDA to discuss unique aspects of the devices and/or materials in the…
Mechanical Properties of Metals
Expert has studied aluminum alloys from the 2xxx, 5xxx, 6xxx and 7xxx series and studied their grain size, tensile properties, heat treatments, corrosion resistance, and fatigue behavior (both room temperature stress - life (S-N) and crack growth behavior). His work…
Electrical Connectors
Expert has applied his physics background to generate a fundamental understanding of temperature generation and material transport in electrical contact spots (a-spots) in bulk electrical interfaces. Over 25 years, his research showed that 1) Sintering effects occur in a-spots even…
Metallurgical Engineering
Expert has 30 years of experience in providing effective, unbiased forensic and materials engineering and failure analysis. His knowledge enables him to evaluate the data obtained by the latest materials diagnostic evaluation methods. Expert has a comprehensive understanding of failure…
Aluminum/Materials Joining and Product Manufacturing
Expert has extensive knowledge and experience in most processes and methods for joining aluminum, having numerous technical publications, presentations, and patents in the area. He consults with clients on process and equipment selection as well as troubleshooting existing operations. Fusion…
Tribology, Wear, Coatings, Materials Selection, Materials Testing, Computer Modeling, Lubrication
Expert has experience with numerous types of abrasive wear problems, including the design of optimal surface topography to minimize abrasive wear. This includes surface design, wear testing, and the use of coatings in abrasive wear environments to enhance system life…
Machinability, Cutting Tools, Workpiece Material Development, and Surface Integrity
Expert's company is internationally recognized for its work in developing and distributing data for machining of a wide variety of materials. It's the premier source for machining data (specific operating conditions), process engineering, machinability testing, and machine tool and cutting…
Gear Design & Analysis
HELICAL GEAR DESIGN; SPUR GEAR DESIGN; GEAR TOOTH. Expert has extensive experience in the design and analysis of spur and helical gears. He is the author of the computer programs GEARCALC and AGMA218, which are widely used by the gear…
Failure Analysis of Materials
MATERIAL FAILURE ANALYSIS; ADHESIVE FAILURE; COMPOSITE FAILURE; METAL FAILURE. Expert's (pronounced Wall-teen) principal occupation has been in the analysis of failures of machine components, including orthopedic (surgical) implants. Materials analyzed include metals and alloys of all types, polymers, elastomers, composites,…
Metallurgical Engineering, Materials Processing, Materials Failure Analysis
Expert has gained extensive experience in the uses of ferrous metals and alloys (carbon and alloy steel, high strength steel, structural steel, heat resistant steel), non-ferrous metals and alloys, superalloys, stainless steels (austenitic, ferritic, martensitic, and precipitation hardening grades), tool…