6 August 2001 Integrating fiber optic sensor for ultrasonic flaw detection
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Ultrasonic Lamb waves have been proved to be a potentially desirable method for quick interrogation of large plate structures. Integrating fiber optic sensors offer great potential to monitor large areas due to their geometric flexibility. To date this potential has not been widely exploited and there have been only a few reports of non-destructive testing with integrating fiber optic sensors. In this report we present our preliminary measurements for the interrogation of hole defects in plate-like materials with surface-bonded integrating fiber optic sensors. Due to the signal integrating characteristics of fiber sensors very complicated signals were obtained. Therefore signal processing is needed to interpret waveforms for flaw detection.
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Fengzhong Dong, Fengzhong Dong, Kathryn Atherton, Kathryn Atherton, S. Gareth Pierce, S. Gareth Pierce, Kejiang Zhou, Kejiang Zhou, Colin I. Swift, Colin I. Swift, Brian Culshaw, Brian Culshaw, } "Integrating fiber optic sensor for ultrasonic flaw detection", Proc. SPIE 4328, Smart Structures and Materials 2001: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (6 August 2001); doi: 10.1117/12.435524; https://doi.org/10.1117/12.435524

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