The interaction between clothing and air weapon pellets.

Area of Science:

• Forensic Science
• Ballistics
• Trauma Analysis

Background:

• Air weapons are widely available and often perceived as safe due to minimal licensing.
• Despite low power, air weapons cause significant injuries and fatalities.
• Limited research exists on the ballistics and injury potential of air weapon projectiles.

Purpose of the Study:

• To investigate the penetration dynamics of air weapon projectiles into ballistic gel.
• To assess the effect of clothing layers on projectile penetration.
• To analyze pellet-clothing interactions and potential for secondary injury.

Main Methods:

• Ballistic gel blocks were subjected to Bloom and rupture tests for consistency.
• Pellet penetration tests were conducted on unclothed and clothed gel blocks (simulating various attire).
• Pellet shape, range, and clothing type were varied to examine their effects on penetration and damage.

Main Results:

• Pellet shape significantly influenced apparent hole size and damage mechanism (pushing vs. laceration).
• Loose clothing substantially reduced projectile penetration, decreasing it by 50-70% at 9.1m and preventing penetration in most cases at 18.3m.
• Energy loss alone did not explain reduced penetration at longer ranges, suggesting impulse plays a role.

Conclusions:

• Loose clothing offers significant protection against air weapon projectile penetration.
• Even non-penetrating impacts can entrain cloth fibers, posing an infection risk.
• Further research into impulse dynamics and projectile-tissue interaction is warranted.