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Characterization of BCL strain gages for use to 1366 K (2000 F)Strain gage behavior under static and transient heating conditions at various strain rates and high temperatures (1366 K(2000 F) was studied. Optimum time-temperature parameters were developed for preconditioning (prestabilizing) the gages. A limited study was carried out to determine the extent of spalling of platinum cladding during fabrication of platinum-clad wire strain gages. Further verification was also carried out on the convergence and repeatability of the apparent strain characteristics of the gage under heating and cooling cycles. The significance of these characteristics from the standpoint of enhancing measurement accuracy is also discussed. It was concluded that the gage should perform satisfactorily to temperatures approaching 1366 K (2000 F).
Document ID
19760003355
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Lemcoe, M. M. (Battelle Columbus Labs. OH, United States)
Date Acquired
September 3, 2013
Publication Date
August 27, 1975
Subject Category
Instrumentation And Photography
Report/Patent Number
NASA-CR-132739
Accession Number
76N10443
Funding Number(s)
CONTRACT_GRANT: NAS1-13357
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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