Measurement of strains at high temperatures by means of electro-optics holographyElectro-optics holographic-moire interferometry is used to measure strains at temperatures up to 1000 C. A description of the instrumentation developed to carry out the measurements is given. The data processing technique is also explained. Main problems encountered in recording patterns at high temperatures are analyzed and possible solutions are outlined. Optical results are compared with strain gage values obtained with instrumented specimens and with theoretical results. Very good agreement is found between optical, strain gage and theoretical results.
Document ID
19930032615
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sciammarella, Cesar A. (NASA Ames Research Center Moffett Field, CA, United States)
Bhat, G. (NASA Ames Research Center Moffett Field, CA, United States)
Vaitekunas, Jeffrey (Illinois Inst. of Technology Chicago, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: 1991 SEM Spring Conference on Experimental Mechanics, Milwaukee, WI, June 10-13, 1991, Proceedings (A93-16601 04-39)
Publisher: Society for Experimental Mechanics, Inc.