The Charpy Impact Test as a Method for Evaluating Impact Resistance of Composite Materials.

Abstract

A detailed analysis of the three point bend (Charpy Impact) test was conducted. A simple strength of materials approach to the prediction of specimen response was extended to include shear deformation, shear yielding and local loading tup deformation. Load-deflection, energy absorbed and failure modes were predicted for graphite-epoxy, and two types of boron-aluminum composites. Experiments were then conducted on these materials and the observations compared to the predictions. The analysis was unable to predict specimen response accurately, especially when significant shear deformation or yielding occurred.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA057967

Entities

People

  • Dennis C. Krinke
  • John P. Barber
  • Theodore Nicholas

Organizations

  • University of Dayton Research Institute

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Charpy Impact Tests
  • Composite Materials
  • Deflection
  • Elastic Properties
  • Experimental Data
  • Failure Mode And Effect Analysis
  • Geometry
  • Graphitic Materials
  • Impact Tests
  • Materials
  • Materials Laboratories
  • Mechanics
  • Modulus Of Elasticity
  • Stress Strain Relations
  • Stresses
  • Tensile Strength

Readers

  • Computational Modeling and Simulation
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials