Accession Number:

ADA064703

Title:

Recent Progress in Understanding Environment Assisted Fatigue Crack Growth.

Descriptive Note:

Technical rept.,

Corporate Author:

LEHIGH UNIV BETHLEHEM PA INST OF FRACTURE AND SOLID MECHANICS

Personal Author(s):

Report Date:

1979-01-01

Pagination or Media Count:

18.0

Abstract:

Recent fracture mechanics and surface chemistry based studies have contributed to further understanding of environment assisted fatigue crack growth in high-strength alloys. For highly reactive alloy-environment systems, cracking response may depend also on the rate of transport of the aggressive environment to the crack tip. For gaseous environments, a formal basis for estimating pressure and frequency dependence has been developed. The framework and approach are expected to be applicable to other aggressive environments such as, aqueous environments, and should provide a basis for the development of appropriate material evaluation and life prediction procedures.

Subject Categories:

  • Properties of Metals and Alloys
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE