Accession Number:

ADA070296

Title:

Fatigue Failure Prediction by X-Ray Double Crystal Diffractometry.

Descriptive Note:

Research and development rept.,

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Report Date:

1979-06-01

Pagination or Media Count:

20.0

Abstract:

X-ray double crystal diffractometry and reflection topography were employed to examine the deformation response of single crystals and Al 2024 alloy specimens. A propensity for work hardening in the surface layers compared to the bulk material was demonstrated for both tensile-deformed and fatigue-cycled metals. The cyclically induced defect distribution with depth from the specimen surface was also investigated as a function of the fraction of fatigue life. This led to a capability for predicting the fatigue life and failure by a nondestructive x-ray diffraction method. Author

Subject Categories:

  • Metallurgy and Metallography
  • Crystallography
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE