15 March 1998 Optical fiber strain gauges for high-cycle fatigue monitoring of ceramic matrix composite materials
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Abstract
Optical fiber sensing techniques are ideal for applications where high-temperature, electromagnetic interference, or vibration cause traditional electrical sensors to become unreliable. Gold-coated, silica-based optical fibers can withstand temperatures up to 900 degrees C and sapphire fibers can be employed for temperatures as high as 2000 degrees C. We present dynamic strain and temperature measurements of ceramic matrix composite specimens using extrinsic Fabry-Perot interferometric fiber optic strain and temperature sensors. The extremely low-mass and rugged construction of the sensors will allow them to survive high- cycle, high-temperature fatigue testing.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jonathan A. Greene, Carrie L. Kozikowski, Rob O'Neal, Stephen H. Poland, Michael P. Camden, and Larry W. Simmons "Optical fiber strain gauges for high-cycle fatigue monitoring of ceramic matrix composite materials", Proc. SPIE 3399, Process Control and Sensors for Manufacturing, (15 March 1998); doi: 10.1117/12.302555; https://doi.org/10.1117/12.302555
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