WHOLE-FIELD METHODS IN THE MEASUREMENT OF POSTELASTIC SURFACE STRAINS,
Abstract
Several whole-field methods were studied and a new technique was developed for the purpose of measuring post-elastic surface strains in metals. Critical evaluation was given to the following experimental techniques: the moire effect and the birefringent coating. In both methods, the principal experimental model designed for the study of the techniques was a simple tension plate with a central, circular hole as a stress raiser. Fringe patterns developed in both methods were recorded by photography. The range of strain to be measured is from the elastic limit to the rupture point of the metal. Measurement of strains at or near the fracture in the metal has been emphasized. The moire method is found to be a better method than the birefringent coating method for measuring post-elastic surface strains. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 17, 1963
- Accession Number
- AD0424340
Entities
People
- F. D. Ju
Organizations
- University of New Mexico