OPTICAL DIFFRACTION TECHNIQUES FOR STRAIN MEASUREMENT.
Abstract
New techniques are developed that extend the use of the diffraction grating strain gage to the measurement of axial strains when diffraction angle changes are large and that permit these integral gages to be used for measuring the circumferential strains produced by axial impact of cylindrical rods. Diffraction-strain equations are derived for several different optical configurations that may be employed in experimental studies. Photographs show typical diffraction patterns obtained for each configuration of laser, grating and film. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1969
- Accession Number
- AD0687414
Entities
People
- H. H. Stadelmaier
- H. W. Blake
- R. A. Douglas
Organizations
- North Carolina State University