2088. Damage detection of pipeline multiple cracks using piezoceramic transducers
Guofeng Du1, Linsheng Huo2, Qingzhao Kong3, Gangbing Song4
1School of Urban Construction, Yangtze University, Jingzhou, Hubei 434023, China
2School of Civil Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
3, 4Department of Mechanical Engineering, University of Houston, Houston, TX 77204, USA
E-mail: firstname.lastname@example.org, email@example.com, firstname.lastname@example.org, email@example.com
Received 3 April 2016; received in revised form 11 June 2016; accepted 17 June 2016
Abstract. To study the feasibility of detecting pipeline multi-cracks damage using piezoceramic transducers, the electromechanical impedance method and the stress wave based active sensing method were used respectively to perform the damage detection of pipeline with multi-cracks. In this research, the lead zirconate titanate (PZT) type transducers were used due to its strong piezoelectric effect and low cost. During the experiments, two artificial cracks on the pipeline specimen were created, ranging from 0 mm to 9 mm, and seven different operating conditions were generated for each artificial crack. In the monitoring test, for the electromechanical impedance method, the damage index based on Root Mean Square Deviation (RMSD) was used, and for the active sensing method, the damage index based on Wavelet Packet Energy Loss (WPEL) was used. In addition, the relationship between the crack depth and RMSD as well as the relationship between the crack depth and location and WPEL were analyzed. The results show that RMSD and WPEL indices increase with the increase of the depth of pipeline cracks. In addition, the WPEL index increases with the appearance of new cracks. Quantitative analysis of pipeline crack damage can be realized by electromechanical impedance method, and localization analysis on the pipeline multi-cracks damage can be achieved by stress wave method based on sensor arrays.
Keywords: piezoelectric ceramic patch, electromechanical impedance, stress wave, pipe crack, damage identification.
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Cite this article
Du Guofeng, Huo Linsheng, Kong Qingzhao, Song Gangbing Damage detection of pipeline multiple cracks using piezoceramic transducers. Journal of Vibroengineering, Vol. 18, Issue 5, 2016, p. 2828‑2838.
© JVE International Ltd. Journal of Vibroengineering. Aug 2016, Vol. 18, Issue 5. ISSN 1392-8716