Detection of Various Damages Based on Piezoceramic Optical Fiber Sensor

Yong Hong; Gao Ping Wang; Seung Ho Hwang; Hyun Sik Kim; Dong Pyo Hong

doi:10.4028/www.scientific.net/KEM.413-414.367

Paper Titles

Fractal Theory Based Damage Assessing Method of Acoustic Emission Test
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Bayesian Logic Applied to Damage Assessment of a Smart Precast Concrete Element
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Assessment, Strengthening and Validation of Prestressed Damaged Beams
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Detection of Various Damages Based on Piezoceramic Optical Fiber Sensor
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Applicaton of Modal Filtration for Damage Detection of Rotating Shaft
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On Optimal Sensor Placement Criterion for Structural Health Monitoring with Representative Least Squares Method
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FE Model Updating for Damage Detection – Application to a Welded Structure
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Monitoring Vertical Loads on the Bearings of the High Coast Suspension Bridge
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 413-414Detection of Various Damages Based on Piezoceramic...

Detection of Various Damages Based on Piezoceramic Optical Fiber Sensor

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 damage, such as cracks, loosen bolts, holes, are more common forms in real structures. In particular, detection method of the damage with respect to various depths of the crack is presented in this paper.

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Periodical:

Key Engineering Materials (Volumes 413-414)

Pages:

367-372

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.413-414.367

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Online since:

June 2009

Authors:

Yong Hong, Gao Ping Wang, Seung Ho Hwang, Hyun Sik Kim, Dong Pyo Hong

Keywords:

Optical Fiber, Piezoceramic Sensors, Ultrasonic Wave (UW), Various Damage

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References

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