Preliminary Development of an Interferometric Strain Gage for Use on Nosetip Materials Subjected to Thermal Shock.
Abstract
This report describes the results of a limited effort to extend the capabilities of the interferometric strain gage (ISG) to high temperatures at high heating rates on graphite and tungsten. The specified temperature limit was 2500 F, which was to be reached in a time of approximately two seconds. Experiments were conducted using a specially constructed furnace at Michigan State University to evaluate various facets of the technique, and the high heating rate experiments were conducted at Southern Research Institute. The ISG is based on the motion of laser-generated interference patterns from the specimen surface. If suitable reflecting surfaces can be made that will withstand the high temperature environment, then the technique has great potential. Details of the techniques and instrumentation, as well as descriptions of the various evaluative experiments, are included in this report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1976
- Accession Number
- ADA031320
Entities
People
- W. N. Sharpe Jr.
Organizations
- Michigan State University