Accession Number : AD0863205

Title :   A Simple Crack Extension Criterion for Time Dependent Spallation.

Descriptive Note : Technical rept. Jan-Jul 69,

Corporate Author : AEROSPACE CORP SAN BERNARDINO CA SAN BERNARDINO OPERATIONS

Personal Author(s) : Field, F. A.

Report Date : 20 OCT 1969

Pagination or Media Count : 29

Abstract : A simple mechanistic model for time dependent spallation is developed and correlated with experimental data. Included in the model are effects of plastic flow and strain rate sensitivity. Experimental data for two aluminum alloys are consistent to within about 30 percent of the critical stress predictions for this model. (Author)

Descriptors :   (*SPALLATION, MATHEMATICAL MODELS), CRACK PROPAGATION, STRESSES, STRAIN(MECHANICS), CREEP, ALUMINUM ALLOYS.

Subject Categories : Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE