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Measurement of strains at high temperatures by means of a portable holographic moire cameraElectronic holographic moire is utilized to measure strains at temperatures up to 1000 C. A CW laser operating at 50 mW and at the wavelength of 632.8 nm is used to illuminate the objects under study. The main variables influencing the fringe patterns visibility are discussed and measurements are performed to obtain the values of these variables in the performed experiments. The coefficient of expansion of an alloy is measured at temperatures ranging from 797 C to 986 C. Excellent agreement is found between the measured values and those provided by the manufacturer.
Document ID
19900057429
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sciammarella, C. A.
(Illinois Inst. of Tech. Chicago, IL, United States)
Bhat, G.
(Illinois Inst. of Tech. Chicago, IL, United States)
Shao, Y.
(Illinois Institute of Technology Chicago, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Instrumentation And Photography
Meeting Information
Meeting: Hostile Environments and High Temperature Measurements
Location: Kansas City, MO
Country: United States
Start Date: November 6, 1989
End Date: November 8, 1989
Accession Number
90A44484
Funding Number(s)
CONTRACT_GRANT: NAG2-547
Distribution Limits
Public
Copyright
Other

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