1 May 1992 An optical-fiber fatigue crack detection and monitoring system
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Abstract
An assessment has been made of the reliability of an optical-fibre crack- monitoring system for detecting the initiation and growth of fatigue cracks inaluminium alloys. The sensors are capable of detecting crack-width increases in therange 5 to 30 lam, in aluminium alloys subjected to cyclic loading, with a high degreeof confidence. The performance of the sensors is unchanged by large cyclic loadingcycles up to about 100 microstrain, over the temperature range -196° to +120°C, up to100% relative humidity conditions or immersed in normal or sea water.
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K. F. Hale, "An optical-fiber fatigue crack detection and monitoring system", Proc. SPIE 1777, First European Conference on Smart Structures and Materials, 17770U (1 May 1992); doi: 10.1117/12.2298053; https://doi.org/10.1117/12.2298053
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