SHEAR CIRCUMFERENTIAL GUIDED WAVES IN COATED GAS PIPELINE
Shear circumferential guide waves propagating in the gas pipeline have been widely explored in recent years.Radial cracks in gas pipeline are susceptible to shear circumferential guide waves because there are no waves conversion when ultrasonic guided waves are reflected and scattered by such defects.The development of Electromagnetic Acoustic Technique (EMAT) now can easily excite different mode of shear circumferential guide wave for crack detection.Previous investigations of guided wave propagation in the gas pipeline have led to the development of pipelines inspection for bare pipes.However, most pipes in industrial are wrapped in coatings and the existence of the coatings will bring impacts to guided waves propagation.This paper focuses on the influence of the coating on the shear circumferential guide waves in gas pipeline.Dispersion curves and distribution of energy (displacement) along the radial direction of different wave modes are discussed.The work is crucial for optimizing the parameters of EMAT transducer.
Crack detection Coated gas pipeline Electromagnetic Acoustic Technique(EMAT) Shear circumferential guide wave Guided wave modes
Yan LI Jian-hong YANG Chang-chun QIU Jin-sheng YANG Shi-xiang Song Fu-bin WANG
China Petroleum Pipeline Inspection Technologies Co., Ltd.Langfang, P.R.China, 065000;School of Mech School of Mechanical Engineering, Beijing University of Science and Technology, Beijing 100083, P.R. China Petroleum Pipeline Inspection Technologies Co., Ltd.Langfang, P.R.China, 065000 China Petroleum Pipeline Bureau, Langfang, P.R.China, 065000
国际会议
The 2017 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2017全国压电和声波理论及器件技术研讨会)
成都
英文
481-485
2017-10-27（万方平台首次上网日期，不代表论文的发表时间）