Health monitoring of structures using fiber optic sensors

Anand Krishna Asundi

doi:10.1117/12.347969

28 April 1999 Health monitoring of structures using fiber optic sensors

Anand Krishna Asundi

Proceedings Volume 3666, International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98; (1999) https://doi.org/10.1117/12.347969
Event: International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98, 1998, New Delhi, India

Abstract

Aircraft in active service are mostly made of aluminum alloy. On line health monitoring of these structures is becoming more important as the older aircraft reach the end of their design life. At the same time newer aircraft made of new materials such as composites need monitoring since the design methodology for these materials is still under development. While conventional NDT methods are improving, an on-line monitoring system would provide regular check-ups without significant downtime. Fiber optic sensors embedded into or mounted on the surface of materials or structures to monitor the integrity of members has been discussed widely in recent years. Among them the Fiber Optic Polarimetric Sensor (FOPS) has the advantage of long sensing gauge length. In this paper, FOPS are mounted on the surface of aluminum specimens as well as embedded within composites to demonstrate its ability to monitor the development of cracks and predict residual load of structure.

Citation Download Citation

Anand Krishna Asundi "Health monitoring of structures using fiber optic sensors", Proc. SPIE 3666, International Conference on Fiber Optics and Photonics: Selected Papers from Photonics India '98, (28 April 1999); https://doi.org/10.1117/12.347969

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