1 May 1994 Using standard interferometric sensors for high-temperature strain measurements
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Standard Michelson interferometric optical fiber sensors are used to make strain measurements on a carbon/carbon composite beam at temperatures as high as 800 degree(s)C. Copper, titanium, aluminum, and combinations of the three are investigated as sputtered end mirrors for the Michelson sensor, and it is found that the copper mirrors maintained the highest reflectivity in the 100 degree(s)C to 1000 degree(s)C temperature range. All measurements indicate that the optical fibers become more brittle with prolonged exposure to high temperatures.
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Chia-Chen Chang, Chia-Chen Chang, Daniel Sagrario, Daniel Sagrario, L. Job, L. Job, James S. Sirkis, James S. Sirkis, } "Using standard interferometric sensors for high-temperature strain measurements", Proc. SPIE 2191, Smart Structures and Materials 1994: Smart Sensing, Processing, and Instrumentation, (1 May 1994); doi: 10.1117/12.173980; https://doi.org/10.1117/12.173980

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