Resistance of M1 Helmets of Varying Thicknesses and of M1 Helmets Fitted with Plastic Liners to Perforation by the Soft and Hard Types of Caliber .45 M1911 Ball Ammunition

Abstract

Ballistic tests conducted upon the fronts and backs of M1 helmets of varying thicknesses showed marked increases in ballistic resistance up to thicknesses of 0.035 in. to 0.037 in. above which thickness the increase was negligible. The front of the M1 helmet has a ballistic limit approximately 5% higher than the back. The plastic liner was found to behave in a brittle manner and to have no effect upon the ballistic resistance of M1 helmets. The replacement of the liner by an equivalent weight of steel in the helmet shell resulted in a considerable increase in the ballistic efficiency.

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Document Details

Document Type
Technical Report
Publication Date
Jan 30, 1945
Accession Number
ADA954941

Entities

People

  • A. Hurlich

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Acceptance Tests
  • Ammunition
  • Ammunition Fragments
  • Automatic Identification Systems
  • Ball Ammunition
  • Efficiency
  • Geometry
  • Materials
  • Munitions
  • Openings
  • Ordnance Laboratories
  • Photographs
  • Projectiles
  • Resistance
  • Thickness

Readers

  • Explosive Engineering.
  • Human-Computer Interaction (HCI).