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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…
Chemical Analysis, Polymer Characteristics
Expert P. Expert has devoted a large part of his 40-year career to polymer characterization and macromolecular physical sciences. As a physical polymer chemist at the US Rubber Company and for some 35 years afterwards at Allied Chemical/AlliedSignal, much of…
Polymer Selection for Food, Automotive, and Electronic Markets
Expert has an in-depth understanding of the high-pressure synthesis copolymerization of ethylene with combinations of co-monomers such as acrylates, vinyl acetate, (meth)acrylic acid, and carbon monoxide. His knowledge results from the high-pressure pilot plant work performed under his direction to…
Plastics Selection, Design, Compound, Processing, Testing, Failure, Pipes and Membrane
Expert is an expert in plastic piping, having in-depth knowledge of polyethylene pipe, PE gas pipe, PVC pipe, ABS pipe, crosslinked-polyethylene (PEX) pipe, polybutylene pipe, and related fittings. He is equally proficient with pipe joining processes using solvent cement and…
Polyurethanes; Crystalline Polymers; Dielectric Properties; Ion-containing Polymers
Summary: Although I retired from Penn State in July '18, I continue to be engaged in the scientific / technical side of polymer science and engineering. I am more actively seeking external consulting opportunities, including serving as an expert witness.…
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,…
Corrosion, Material Selection
ALLOY CORROSION; METAL CORROSION; SOLUTION CORROSION. Since 1980, Expert has been actively involved in solving aqueous corrosion problems. He has also recommended appropriate materials for corrosive services. Besides metals, he has a good understanding of the effects of corrosion on…
Thin Films, Coatings, and Instruments
Expert has more than fifteen years of experience in the areas of experimental thin films and coatings. The range of thin films include, AL, Cr, Ni-Cr, Pd, Au, SeGe, In, polyvinylalcohol, polyvilylchloride, Si0x, electroless Au, electroless Ni, and electroless Pd.…
Environmentally-Compatible Polymers
Expert is an expert in environmentally-compatible materials, including biodegradable plastics and polymers, plastic environmental effects, plastic non-hazardous solid waste management, paper coatings, and moisture barrier material. He has conducted research on the design and engineering of new biodegradable materials that…
Biomedical Metals Technology
PRODUCT DEVELOPMENT CYCLE TIME. Expert has focused a significant portion of his career on product development manipulation. This has involved reducing the cycle time from concept to product introduction. He has applied this experience to a variety of scientific disciplines.…