David M Hallman, MS, PE Expert Witness
Curriculum Vitae

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Specialties & Experience of this Expert Witness

General Specialties:

Mechanical Engineering and Accident Reconstruction

Keywords/Search Terms:

Automotive, Vehicle Fires, Crash Data, Failure Analysis, Origin and Cause, Vehicle Mechanical, Farm Equipment, CDR, EDR, Heavy Truck Data, Motorcycle Crash, Infotainment


Diploma – Auto Mechanics, Anoka Technical College; BSME, University of Saint Thomas; MS Materials Science & Engr., University of Minnesota

Years in Practice:


Number of Times Deposed/Testified in Last 4 Yrs:


Additional Information

I am a Licensed Professional Engineer in ten states with over twenty-nine years combined experience in materials research, mechanical engineering and design, crash testing research and crash investigation and reconstruction, vehicle fire research and investigation, automotive mechanics and forensic mechanical and materials investigation. I hold degrees in mechanical engineering (BS) and materials science and engineering (MS). I work on a wide variety of forensic mechanical and forensic metallurgical investigations. These investigations have included but are not limited to an elevator failure involving materials and design issues, a personal injury involving a paper shredder, multiple cases involving farm equipment and personal injuries, machine guarding cases, chair collapse cases, bolted joint failures, patient lifter failures, vehicle hand control issues, and tipped telehandler and boom crane cases. My automotive background coupled with my two degrees, extensive testing and research and continuing studies qualifies me for most aspects of crash investigation and reconstruction. Some of the cases investigated include a vehicle tie rod failure that triggered a cross over crash, multiple unintended vehicle acceleration cases and cases involving heavy truck brake failure. I have also been involved in multiple cases involving tire failure analysis. Since 2011, I have been involved with several different crash teams around the country and has been deeply involved in planning and executing instrumented vehicle crash tests. Areas of Expertise: Root cause analysis of mechanical incidents and failures Construction equipment incident investigation Forensic Mechanical Engineering Consulting Forensic Metallurgical Consulting General Forensic Engineering Consulting Crash Investigation / Reconstruction CDR (crash data retrieval, "black box", EDR) collection and analysis Vehicle Infotainment Data Collection and Analysis Heavy Truck Data Retrieval, collection and analysis Vehicle mechanical investigations Vehicle electrical investigations Vehicle fire origin and cause investigations Mechanical fire origin and cause investigations (structures)