文献类型：期刊文献

英文题名：A novel defect location method for plate-like structure by Using forward-scattering wave and fuzzy c-means clustering

作者：Chen, Shaojie[1]; Zhou, Shaoping[1]; Li, Yong[1]; Zhang, Lanzhu[1]

机构：[1] East China University of Science and Technology, School of Mechanical and Power Engineering, Shanghai, 200232, China

年份：2017

卷号：5

外文期刊名：American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

收录：EI(收录号：20174704416987)

语种：英文

外文关键词：Defects - Guided electromagnetic wave propagation - Intelligent systems - Location - Fuzzy systems - Plates (structural components) - Forward scattering - Structural health monitoring - Ultrasonic applications

摘要：Ultrasonic guided wave technology combined with sparse transducer array provides an efficient and relatively cost-effective means of defect detection and monitoring for rapid interrogation of large in plate-like structures. However, imaging algorithm used baseline subtraction methods may be compromised under mismatched environment and operational conditions. A defect location method based on forward-scattering wave and fuzzy c-means clustering is proposed in this paper. The distance coefficient including location information between sensor pair using exciting and receiving signal and defect is defined to explain feasibility of the method proposed in this paper. A Parallel line array is evaluated using the method to locate defect. Experimental results show that the proposed method can effectively reduce the influence of mismatched environment and operational conditions on the defect location. ? 2017 ASME.