A STUDY OF THE PHYSICAL BASIS OF MECHANICAL PROPERTIES OF CERAMICS.

Abstract

The fracture mechanics of polycrystalline alumina have been investigated using the double cantilever beam cleavage method. The fracture resistance of alumina was measured at temperatures up to 1500 C. The fracture resistance of alumina increased with increasing grain size for any temperature studied. Electron fractography studies of the fractured surface indicate that the large grain alumina contains more transgranular fracture than the small grain material. This observation along with the fracture resistance measurements indicate that the mode of fracture may play a large role in determining the fracture toughness of alumina.

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1967
Accession Number
AD0818956

Entities

People

  • Gerald D. Swanson
  • Gordon E. Gross
  • Paul L. Gutshall

Organizations

  • MRIGlobal

Tags

DTIC Thesaurus Topics

  • Cantilever Beams
  • Fractography
  • Fracture (Mechanics)
  • Grain Size
  • Materials
  • Mechanical Properties
  • Mechanics
  • Resistance
  • Toughness

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Organic Chemistry
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Microelectronics