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Sensors 2017, 17(8), 1812; https://doi.org/10.3390/s17081812

Multiple Cracks Detection in Pipeline Using Damage Index Matrix Based on Piezoceramic Transducer-Enabled Stress Wave Propagation

1,†
,
2,†
,
3
and
2,*
1
School of Urban Construction, Yangtze University, 434023 Jingzhou, China
2
Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
3
School of Civil Engineering and Architecture, Wuhan University of Technology, 430072 Wuhan, China
The co-first authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 4 June 2017 / Revised: 1 August 2017 / Accepted: 2 August 2017 / Published: 12 August 2017
(This article belongs to the Section Physical Sensors)
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Abstract

Cracks in oil and gas pipelines cause leakage which results in property damage, environmental pollution, and even personal injury or loss of lives. In this paper, an active-sensing approach was conducted to identify the crack damage in pipeline structure using a stress wave propagation approach with piezoceramic transducers. A pipeline segment instrumented with five distributed piezoceramic transducers was used as the testing specimen in this research. Four cracks were artificially cut on the specimen, and each crack had six damage cases corresponding to different crack depths. In this way, cracks at different locations with different damage degrees were simulated. In each damage case, one piezoceramic transducer was used as an actuator to generate a stress wave to propagate along the pipeline specimen, and the other piezoceramic transducers were used as sensors to detect the wave responses. To quantitatively evaluate the crack damage status, a wavelet packet-based damage index matrix was developed. Experimental results show that the proposed method can evaluate the crack severity and estimate the crack location in the pipeline structure based on the proposed damage index matrix. The sensitivity of the proposed method decreases with increasing distance between the crack and the mounted piezoceramic transducers. View Full-Text
Keywords: piezoceramic transducer; stress wave propagation; wavelet packet analysis; pipeline crack detection; multiple cracks detection; structural health monitoring piezoceramic transducer; stress wave propagation; wavelet packet analysis; pipeline crack detection; multiple cracks detection; structural health monitoring
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Du, G.; Kong, Q.; Zhou, H.; Gu, H. Multiple Cracks Detection in Pipeline Using Damage Index Matrix Based on Piezoceramic Transducer-Enabled Stress Wave Propagation. Sensors 2017, 17, 1812.

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