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论文类型：期刊论文
发表时间：2017-10-01
发表刊物：SMART MATERIALS AND STRUCTURES
收录刊物：Scopus、SCIE、EI
卷号：26
期号：10
ISSN号：0964-1726
关键字：pipeline; structural health monitoring; crack detection; electromechanical impedance; electromechanical impedance sensor
摘要：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.