Spectrum Effects on the Growth of Short Cracks,
Abstract
Several phenomena are discussed concerning creep-fatigue effects on crack initiation and propagation in notched 7075-T651 aluminum at room temperature. Background data show complete creep ruptures of smooth specimens in a time of 10 to the 6th power at stresses about equal to the yield strength. Creep rate under a constant load decreases in the first half of the life and increases in the second half. In notched specimens (Kt = 4) tensile overloads with hold times result in additional extensions of the fatigue life beyond that of brief overloads.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1983
- Accession Number
- ADP001611
Entities
People
- B. I. Sandor
- D. A. Haas
- T. Ozakat
Organizations
- University of Wisconsin–Madison