Impact Resistance of Structural Ceramics. Part 1. Instrumented Drop- Weight Tests

Abstract

Two mechanisms can lead to failure of ceramics under impact, (1) failure due to flexural stresses, and (2) failure due to Hertzian type cracks introduced locally by the impactor. An instrumented drop-weight test designed to study failure due to flexural stresses is described and used to study various forms of silicon nitride and silicon carbide up to 1300 C. Results on alumina and sialon are included for comparison. From the standpoint of impact resistance hot-pressed silicon nitride is the best material.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1976
Accession Number
ADA030878

Entities

People

  • I. Bransky
  • James M. Wimmer
  • Norman M. Tallan

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Ceramic Materials
  • Composite Materials
  • Energy Transfer
  • Failure Mode And Effect Analysis
  • High Temperature
  • Impact Point
  • Impact Tests
  • Kinetic Energy
  • Materials
  • Materials Laboratories
  • Mechanics
  • Modulus Of Elasticity
  • Strain Gages
  • Strain Rate
  • Turbine Components
  • Turbines

Readers

  • Powder metallurgy of Titanium alloys.
  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.