1 December 1991 Real-time structural integrity monitoring using a passive quadrature demodulated, localized Michelson optical fiber interferometer capable of simultaneous strain and acoustic emission sensing
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Abstract
A Michelson Fibre optic sensor (MFOS) is described for in-situ strain and vibration monitoring as well as acoustic emission detection in composite material structures. The phase sensitive fibre optic sensor is localised, all-fibre, and intrinsic. The MFOS was successfully embedded in Keviar/epoxy and graphite/epoxy thermosets as well as graphite/PEEK thermoplastic in order to perform local strain and vibration measurements at the lamina level. A technique allowing acoustic emission detection in parallel with strain and vibration monitoring is illustrated.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Edward Tapanes, "Real-time structural integrity monitoring using a passive quadrature demodulated, localized Michelson optical fiber interferometer capable of simultaneous strain and acoustic emission sensing", Proc. SPIE 1588, Fiber Optic Smart Structures and Skins IV, (1 December 1991); doi: 10.1117/12.50188; https://doi.org/10.1117/12.50188
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