Accession Number : AD0696936

Title :   FAILURE OF STRUCTURAL ALLOYS BY SLOW CRACK GROWTH,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Crooker,T. W. ; Lange,E. A.

Report Date : 14 OCT 1969

Pagination or Media Count : 13

Abstract : Structural alloys are susceptible to failure by slow crack growth caused by fatigue and corrosion-fatigue. Laboratory studies have provided quantitative engineering data on the resistance of various steels and titanium alloys to slow crack growth. The rate of crack growth per cycle of repeated load was shown to be a function of the fracture mechanics crack tip stress-intensity factor. Methods were shown for relating these results to structural parameters, nominal stress, and flaw geometry. The influence of a salt water environment on slow crack growth and interaction with stress-corrosion cracking were explored. (Author)

Descriptors :   (*STRUCTURES, WELDING), (*STEEL, FAILURE(MECHANICS)), (*TITANIUM ALLOYS, FAILURE(MECHANICS)), (*WELDS, LOADS(FORCES)), CRACK PROPAGATION, CORROSION, FATIGUE(MECHANICS)

Subject Categories : Properties of Metals and Alloys
      Fabrication Metallurgy
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE