High temperature optical strain measurement system
Abstract
A high temperature strain measurement system being developed at the NASA Lewis Research Center utilizes laser speckle shift relations to measure strain components on the surface of a hot specimen in near real time. Features of this system include a totally noncontacting measurement capability and a rotatable gauge axis, allowing an optical rosette to be implemented and principal strains to be determined. Preliminary results and background work are presented.
- Publication:
-
5th Annual Hostile Environments and High Temperature Measurements Conference
- Pub Date:
- 1988
- Bibcode:
- 1988heht.conf....8L
- Keywords:
-
- High Temperature Environments;
- Laser Applications;
- Optical Measuring Instruments;
- Strain Gages;
- Strain Measurement;
- Speckle Patterns;
- Stress-Strain Relationships;
- Surface Temperature;
- Instrumentation and Photography