Stephen Mangum

Forensic Expert
Accident Reconstruction

Stephen Mangum is a Forensic Expert – Accident Reconstruction with Aperture (formerly Scientific Analysis, Inc.). Stephen has extensive technical and practical experience in conducting investigations and analyses of automotive crashes. He has investigated and analyzed more than 600 cases in the past 5 plus years, predominantly in the area of Accident Reconstruction.

Stephen holds both a Bachelor of Science and Master of Science degrees in Mechanical Engineering from Texas Tech University. He is certified by the Accreditation Commission for Traffic Accident Reconstruction as an Accident Reconstructionist.

Stephen regularly works with a team of certified and experienced professionals in the fields of Accident Reconstruction and works with a team of 3D Forensic Analysts who develop graphical depictions of Stephen’s analyses for presentation purposes.

Stephen's Expertise

  • Accident Reconstruction


Bachelor of Science in Mechanical Engineering/Minors in Mathematics and Business Administration, Texas Tech University, Lubbock, Texas, December 2016

Master of Science in Mechanical Engineering with a focus in Materials and Mechanics, Texas Tech University, Lubbock, Texas, May 2018

Professional Certifications

ACTAR Accreditation

  • ACTAR Number 4559, April 2023

Federal Aviation Administration

  • Remote Pilot sUAS Certification, February 2019

Work Experience

Aperture, LLC (formerly Scientific Analysis, Inc.), June 2018 - Current, Forensic Expert

  • Investigation, analysis, and reconstruction of motor vehicle accidents through the use of scientific processes
  • Accident scene and vehicle inspection, photography, and measurement
  • Creation of trial exhibits and testimony aids including scene and vehicle diagrams, and reconstruction exhibits

Texas Tech University, March 2016 - December 2017, Graduate Research Assistant

  • Studied numerical simulation of machining methods using finite element modelling
  • Created thermomechanical, elastic-plastic, and failure models for metallic and polymeric materials
  • Performed thermal simulations on metallic machine tooling components


Accreditation Commission for Traffic Accident Reconstruction


  • Passenger and Heavy Vehicle Inspections
  • Passenger Vehicle EDR Imaging
  • Heavy Vehicle EDR Imaging
  • 3D Scanning
  • Evidence Photography
  • Drone Operation
  • Dashcam and Surveillance Video Analysis
  • EDR Data Analysis
  • Evidence Analysis and Mapping
  • Photogrammetry
  • Exhibit Creation
  • Report Writing
  • Expert Testimony

Stephen's Expertise

  • Accident Reconstruction

Relevant Services

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