Impact Induced Tensile Failures in Steel.

Abstract

Steel spheres 11 mm in diameter struck hemispherical and cylindrical targets at 3 km/s. Materials were AISI 1020 and 4340. Tensile strength of these materials at strain rates of .0001/s to 1000/s was determined and important rate effects were observed. Peak particle velocity as a function of range and angle was measured by a fly-off plate technique. Peak stress was calculated from these data. Failure modes were determined from post-impact analysis of targets. Targets less than 6 cm diameter were totally fragmented. 8 cm diameter hemispheres failed in bi-axial tension. 4 cm thick hemispheres failed by planar spall. Large targets did not undergo gross tensile failure. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1979
Accession Number
ADA072477

Entities

People

  • John P. Barber
  • Stephan Bless

Organizations

  • University of Dayton

Tags

DTIC Thesaurus Topics

  • Air Force
  • Crystal Structure
  • Failure Mode And Effect Analysis
  • Gas Guns
  • Geometry
  • Laboratory Procedures
  • Literature Surveys
  • Materials
  • Materials Laboratories
  • Measurement
  • Mechanical Working
  • Metals
  • Munitions
  • Shock Waves
  • Standards
  • Tensile Strength
  • Yield Strength

Readers

  • Explosive Engineering.
  • Mechanical Engineering/Mechanics of Materials.