Compressive Microfracture and Indentation Damage in Al2O3.

Abstract

Compressive damage in alumina has been characterized as a function of strain rate and temperature. Scanning electron microscopy and acoustic emission were employed in examining both the early crack initiation and later failure stages of damage caused by uniaxial compressive stress. The formation of lateral cracks produced during indentation loading is characterized in terms of microplasticity, and the particle velocity range over which the mechanism is expected to be operative is computed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 30, 1977
Accession Number
ADA044655

Entities

People

  • James Lankford Jr.

Organizations

  • Southwest Research Institute

Tags

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Carbonate Esters
  • Contracts
  • Electron Microscopy
  • Emission
  • Governments
  • Microscopy
  • Military Research
  • Scanning Electron Microscopy
  • Strain Rate
  • United States
  • United States Government
  • Virginia

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).

Technology Areas

  • Microelectronics