Steven J. Lorenz

Steven J. Lorenz, Ph.D.

Senior Staff Consultant

Dr. Steven Lorenz is a Senior Staff Consultant with Engineering Systems Inc. (ESi) with expertise in applied mechanics, fatigue and failure analysis, finite element analysis (FEA), machine design, probability and reliability analysis and as well as tribology. In addition to his analytical background, Dr. Lorenz has experience in instrumentation and testing, including custom test fixture development and data acquisition.

Dr. Lorenz has extensively investigated fatigue, friction, lubrication, reliability and wear of bearings, gears and other critical machine components in aerospace, automotive and nuclear industries. His investigative background involves research and development of material behavior models to capture the progressive damage and failure of the material. Additionally, Dr. Lorenz has designed, developed and conducted physical testing ranging from simple fixtures to evaluate performance of a component, to bespoke apparatuses that enable detailed investigation of component behavior.

Dr. Lorenz has demonstrated a commitment to the broader scientific community throughout his career. His research has been published in peer-reviewed scientific journals and presented at prestigious technical conferences. In addition to his research contributions, Dr. Lorenz actively contributes to the scientific community as a reviewer for journals specializing in fatigue and failure analysis as well as tribology. Dr. Lorenz has also served as a Journal Assistant to the Editor in Chief of ASME’s Journal of Tribology from 2022-2023, where he aided in the distribution of articles to technical experts in the field of tribology and provided production support.

Prior to joining ESi, Dr. Lorenz was a Visiting Assistant Professor of Mechanical Engineering and a part of the Mechanical Engineering Tribology Laboratory (METL) at Purdue University. His responsibilities consisted of teaching Machine Design and conducting tribological research.

Home Office


4215 Campus Drive Aurora, IL 60504
  • Phone: (630) 851-4566
  • Fax: (630) 851-4870

Areas of Expertise

ESi's expertise spans dozens of industries and specializations organized across several practice groups, each staffed by dozens of in-house experts with the technical knowledge, hands-on expertise, and courtroom experience required to execute projects for and with our clients from start to finish.

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