The Effects of Compressive Overloads on the Threshold Stress Intensity for Short Cracks,
Abstract
In the present investigation, crack propagation specimens of an aluminum alloy are subjected to continuous and periodic cycles having compressive stresses. Results indicate that for a tension compression load cycle crack growth in the near threshold regime is controlled by the tensile peak stress intensity and the compressive peak stress. Compressive loading significantly reduces the threshold intensity and increases crack growth rate. Furthermore, periodic application of compressive overloads during zero to maximum stress intensity tests is shown to drastically reduce the threshold stress intensity for thousands of cycles following each overload application.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1983
- Accession Number
- ADP001609
Entities
People
- M. L. El Haddad
- P. Au
- T. H. Topper
Organizations
- University of Waterloo