Experimental Determination of Stress Intensity in a Cracked Cylindrical Specimen,
Abstract
The range of stress intensity at the tip of a fatigue crack is the major factor controlling the crack growth rate, and the relationship between these two parameters for any one material is easily established from crack growth rate measurements in a specimen geometry for which the stress intensity calibration is known. However, in a different specimen geometry made from the same material, different crack growth rates will be observed, and it is possible to use this relationship to determine the stress intensity calibration for the second geometry from a comparison of crack growth rates in the two specimens. This report describes such a stress intensity calibration procedure for a hollow cylindrical specimen containing a crack which grows radially from the bore under the influence of compressive loading across a diameter of the ring. The stress intensity determined experimentally is shown to be in close agreement with the results of a theoretical study. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1980
- Accession Number
- ADA098336
Entities
People
- Graham Clark
Organizations
- Defence Science and Technology Group