Accession Number:

ADA012531

Title:

Prediction and Detection of Fatigue Damage.

Descriptive Note:

Final rept. 14 Jan 74-30 Jun 75,

Corporate Author:

MARTIN MARIETTA AEROSPACE DENVER COLO DENVER DIV

Personal Author(s):

Report Date:

1975-06-01

Pagination or Media Count:

32.0

Abstract:

Changes in the surface layer stress of 2014-T6 aluminum alloy were determined as incremental and decremental stress changes were made with increased cycling, up to the point of failure. A methematical relationship was derived and tested for prediction of cumulative damage. This relation takes into account the prior fatigue history when considering multiple stress cyclic tests. The predicted and experimental values for failure of 2014-T6 were in excellent agreement.

Subject Categories:

  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE