Accession Number : AD0483551

Title :   APPLICATION OF FRACTURE MECHANICS TO THERMAL SHOCK.

Descriptive Note : Technical documentary rept.,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS

Personal Author(s) : Rossi, R. C. ; Carnahan, R. D.

Report Date : MAY 1966

Pagination or Media Count : 16

Abstract : Previously derived formulation for the evaluation of thermal shock of ceramic materials is reviewed and evaluated in terms of materials properties and aerospace requirements. In the attempt to improve resistance to thermal shock, developmental approaches have usually been an attempt to increase strength or to decrease stored elastic energy. The present work describes a new approach based upon the assumption that the thermal stress conditions will be too severe to prevent cracking. This approach provides a high flaw density by which released elastic strain energy is absorbed by dispersion along secondary cracks. (Author)

Descriptors :   *THERMAL SHOCK), (*CERAMIC MATERIALS, FRACTURE(MECHANICS), THERMAL STRESSES, COMPOSITE MATERIALS, MAGNESIUM COMPOUNDS, TUNGSTEN, STRAIN(MECHANICS), CRYSTAL DEFECTS, OXIDES, ELASTIC PROPERTIES, REFRACTORY MATERIALS.

Subject Categories : Ceramics, Refractories and Glass
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE