Journal
SMART MATERIALS AND STRUCTURES
Volume 26, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/aa7ef3
Keywords
pipeline; structural health monitoring; crack detection; electromechanical impedance; electromechanical impedance sensor
Funding
- National Natural Science Foundation of China [51378088]
- National Key Research and Development Program [2016YFC0802402]
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An extensive network of pipeline systems is used to transport and distribute national energy resources that heavily influence a nation's economy. Therefore, the structural integrity of these pipeline systems must be monitored and maintained. However, structural damage detection remains a challenge in pipeline engineering. To this end, this study developed a modified electromechanical impedance (EMI) technique for crack detection that involves fusing information from multiple sensors. We derived a new damage-sensitive feature factor based on a pipeline EMI model that considers the influence of the bonding layer between the EMI sensors and pipeline. We experimentally validated the effectiveness of the proposed method. Finally, we used a damage index-root mean square deviation-to examine the degree and position of crack damage in a pipeline.
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