The Effects of Rest-Time on Fatigue Crack Retardation and Observations of Crack Closure.
Abstract
The report examines two variables which could influence fatigue crack retardation: rest periods and specimen thickness. A series of experiments are described in which a tensile overload was applied and the specimen allowed to rest at zero load prior to resuming the original cyclic loading. Since the size of the plastic zone is larger for conditions of plane stress than for plane strain, these tests were repeated for several specimen thicknesses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1975
- Accession Number
- ADA018635
Entities
People
- Alten F. Grandt Jr.
- Dennis M. Corbly
- William N. Sharpe Jr.
Organizations
- Air Force Research Laboratory