Comparison of point and integrated fiber optic sensing techniques for ultrasound detection and location of damage

Graham Thursby; Borja Sorazu; Daniel C. Betz; Wieslaw J. Staszewski; Brian Culshaw

doi:10.1117/12.549023

27 July 2004 Comparison of point and integrated fiber optic sensing techniques for ultrasound detection and location of damage

Graham Thursby, Borja Sorazu, Daniel C. Betz, Wieslaw J. Staszewski, Brian Culshaw

Author Affiliations +

Proceedings Volume 5384, Smart Structures and Materials 2004: Smart Sensor Technology and Measurement Systems; (2004) https://doi.org/10.1117/12.549023
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

In this paper we describe and compare two methods for detecting Lamb waves used for damage detection. One is a polarimetric sensor that integrates the pressure effects of the acoustic wave along its length, whilst the other is the Bragg grating that measures linear strain and is in effect a point sensor. Both sensors are highly directional, which gives benefits in damage signal detection and source location. We demonstrate both the detection and location of damage and discuss the advantages and disadvantages of the two sensors.

Citation Download Citation

Graham Thursby, Borja Sorazu, Daniel C. Betz, Wieslaw J. Staszewski, and Brian Culshaw "Comparison of point and integrated fiber optic sensing techniques for ultrasound detection and location of damage", Proc. SPIE 5384, Smart Structures and Materials 2004: Smart Sensor Technology and Measurement Systems, (27 July 2004); https://doi.org/10.1117/12.549023

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