Date of Award

Summer 8-5-2026

Document Type

Thesis

Degree Name

Master of Science (MS)

Department/Program

Forensic Science

Language

English

First Advisor or Mentor

Peter Diaczuk

Second Reader

Jack Hietpas

Third Advisor

Andrew J. Winter

Abstract

Less-lethal ammunition is widely used by law enforcement as an alternative to lethal force during crowd control, on-street confrontations, and other situations requiring force. Although these projectiles are intended to reduce risk of fatal injury, serious injuries and fatalities have been reported, highlighting the need to better understand the factors that influence their impact behavior. This study evaluated the impact dynamics of four types of 12-gauge less-lethal ammunition, including rubber buckshot, single rubber ball, double rubber ball, and Byrna kinetic projectile, using kinetic energy calculations derived from projectile mass and velocity measurements. In addition, Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) spectroscopy was used to characterize the chemical composition of the projectiles. Together, these analyses provide a forensic assessment of the ballistic performance and material properties of commercially available less lethal ammunition.

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