Forensic Expert Witness Profile


John D. Jarrell, PhD, PE

PhD, Biology, Medical Science and Engineering, Brown, 2008. MSc, Materials Science & Engineering, Brown, 1991. PE, Mechanical Engineering, 1996. ScB, Materials Science & Engineering, Brown, 1988.

Materials Science Associates, LLC
1372 Main Street
Coventry, RI 02816

Phone: 800-672-6721
Fax: 401-667-0993


Dr. John D. Jarrell, PhD, PE, is an experienced multi-discipline biomedical engineer and doctor of medical science specializing in consultation and expert opinions related to product development, intellectual property, risk, failure analysis, legal cases, product liability, accidents and personal injuries. His expertise includes the analysis of complex systems, designs and failures involving materials, mechanical, medical systems and warnings. As a licensed Professional Mechanical Engineer, he is actively involved in design, product development and research. He earned three degrees from Brown University, a Bachelors and Masters of Science in Materials Science and Engineering and a Doctorate in Biology, Medical Science and Engineering and received Medical training in histology, physiology, microbiology and pathology. He has an appointment in the Department of Orthopaedics at the Alpert Medical School of Brown University and at the Weiss Center for Orthopaedic Trauma Research at Rhode Island Hospital. He has US and foreign patents covering photoactive materials, active delivery films and medical applications. He is the author of multiple peer reviewed publications and abstracts in collaboration with academic, hospital and government investigators and authored a guide book on materials selection for designers. He has been awarded contracts by the Department of Veterans Affairs, Rhode Island Hospital and the US Department of Justice. He is an ASTM member for standards Committees F04, Medical and Surgical Materials and Devices and E58 on Forensic Engineering.

Curriculum vitae

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  • Teaching Associate, Dept Orthopaedics, Brown U., 2010-2019
  • Teaching Associate, Dept Orthopaedics, RI Hospital 2010-2019
  • President, Materials Science Associates, LLC 1993 - present
  • Materials Science Engineer, Thielsch Engineering 1991 - 1993
  • Failure analysis, medical devices, drug delivery systems
  • Biomedical, biomechanical, mechanical engineering, testing
  • Patents, IPR, Hatch-Waxman, Markman hearing, Claims Constr.
  • Product liability, Design, Warnings, Manufacturing defects
  • Multiple peer-reviewed scientific publications & patents
  • Contracted by DOJ, Dept of VA, RI Hospital, Weiss Laboratory