DOI: 10.4028/www.scientific.net/kem.413-414.367
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Yong Hong, Gao Ping Wang, Seung Ho Hwang, Hyun Sik Kim, Dong Pyo Hong

Abstract: A piezoelectric ultrasonic sensing system based on an optical fiber has been developed for detection of various damages. The ultrasonic wave generated from a piezoelectric actuator is guided and propagated in the optical fiber and then sensed by a piezoelectric sensor located at the other end of the fiber. The sensed signal can be influenced by environmental and physical changes around the optical fiber. In this study, the sensitivity of the optical fiber sensor is experimentally studied. Various patterns of d…

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