John Leffler

Lecturer, School of Industrial Design

John Leffler, PE, is a lecturer in the School of Industrial Design at Georgia Tech. He teaches materials, design methodologies, and manufacturing processes. He is a board-certified forensic engineer, the primary author of two ASTM technical standards, and is past president of the National Academy of Forensic Engineers. Leffler is externally involved in pedestrian safety research, and has a background in product and machine design engineering. He received his Bachelor of Mechanical Engineering from Georgia Tech, and is a licensed Professional Engineer in 10 states.


  • Bachelor of Mechanical Engineering, Georgia Tech, 1993
  • Emphasis Mechanical Design

Academic Experience

  • Lecturer, 2004-present, School of Industrial Design, Georgia Tech

Recent Engineering Experience

FORCON International: Forensic Mechanical Engineer (2/03-present): Conduct forensic engineering investigations and provide expert witness services related to:

  • Vehicle mechanical issues: analysis of brake, driveline, suspension, wheel/hub, steering, and other systems.
  • Consumer products and mechanical equipment: analysis of design, manufacturing, installation, maintenance, usage, and codes/standards compliance issues. Specialties: machinery, power tools, furniture, powered lifts.
  • Pedestrian walkway safety: analyze slip resistance, fall hazards, other extrinsic factors, and codes/standards compliance. Consultant to the manufacturer of Robert Brungraber-designed tribometers.
  • Vehicle and mechanical equipment fires: origin and cause determination.
  • Development and administration of technical consensus standards.
  • Injury causation and workplace accidents: analysis of extrinsic factors and OSHA/standards compliance.