Procedure for applying high-temperature resistance strain gauges in stress-strain-state investigations
Abstract
Some aspects of measuring thermoelastic stresses by means of high-temperature strain gauges in alloyed steels subjected to rapid heating are examined. A technique is proposed for eliminating the measurement error arising due to the difference between the sample's surface temperature and the compensating-stop temperature. Means of eliminating errors caused by the respective difference in the linear expansion coefficients are also suggested. Using these techniques, the difference between experimental and theoretical values did not exceed 5%.
- Publication:
-
Problemy Prochnosti
- Pub Date:
- April 1976
- Bibcode:
- 1976PrPro.......77S
- Keywords:
-
- High Temperature Tests;
- Strain Gages;
- Stress-Strain-Time Relations;
- Thermoelasticity;
- Instrument Errors;
- Resistors;
- Surface Temperature;
- Temperature Compensation;
- Thermal Expansion;
- Instrumentation and Photography