Accession Number:

ADA136922

Title:

Transition of Corner Cracks at Holes into Through-The-Thickness Cracks

Descriptive Note:

Master's thesis

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1983-12-01

Pagination or Media Count:

105.0

Abstract:

This study developed correction factors for currently used stress intensity factor equations to more accurately predict stress intensity factors for a corner crack emanating from a hole as it transitions to a uniform through- the-thickness crack. These correction factors resulted in an approximate 15 percent increase in total life prediction and a far better correlation between analytical stress intensity factor predictions and experimental results in the transition region. The material used for total life predictions was 7075-T651 Aluminum, and the initial crack eccentricity, ac, was always greater than one.

Subject Categories:

  • Metallurgy and Metallography
  • Plastics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE