Accession Number:

ADA045794

Title:

Crack Propagation in Structural Ceramics Subjected to Thermal Stress

Descriptive Note:

Final rept. 15 Nov 1975-31 Aug 1977,

Corporate Author:

LEHIGH UNIV BETHLEHEM PA

Personal Author(s):

Report Date:

1977-08-01

Pagination or Media Count:

6.0

Abstract:

This program was devoted to the thermal fatigue behavior and failure prediction of structural ceramics under thermal stress. The materials investigated include soda-lime-silica glass, silicon nitride, silicon carbide and alumina. Another phase of the program dealt with the self-fatigue in surface compression strengthened glass plates. That the strength of glass plates can be improved by introducing residual stresses into the material is well known. However, brittle glass strengthened in this manner appears to be susceptible to spontaneous fragmentation even during the complete absence of applied loads. The problem was analyzed from the fracture mechanics point of view.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE