An optical-fiber fatigue crack detection and monitoring system

K. F. Hale

doi:10.1117/12.2298053

1 May 1992 An optical-fiber fatigue crack detection and monitoring system

K. F. Hale

Proceedings Volume 1777, First European Conference on Smart Structures and Materials; 17770U (1992) https://doi.org/10.1117/12.2298053
Event: First European Conference on Smart Structures and Materials, 1992, Glasgow, United Kingdom

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 -196Ã‚Â° to +120Ã‚Â°C, up to100% relative humidity conditions or immersed in normal or sea water.

Citation Download Citation

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); https://doi.org/10.1117/12.2298053

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