标题：Damage identification of cracked pipes based on reflection characteristics of guided waves
作者：Hu, Xiongwei ;Feng, Xin ;Zhou, Jing
作者机构：[Hu, Xiongwei ;Feng, Xin ;Zhou, Jing ] Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China
会议名称：2011 International Conference on Civil Engineering and Transportation, ICCET 2011
会议日期：October 14, 2010 - October 16, 2010
来源：Applied Mechanics and Materials
摘要：A methodology of damage identification for the circumferentially cracked pipe is presented by using the quantitative relationship between crack size and reflection characteristics of guided waves. Firstly, the reflection characteristics and mode conversion behavior were theoretically studied by the 3-D finite element (FE) analysis. It is found that the reflection coefficients (RCs) of longitudinal L(0, 2) and F(1, 3) modes quantitatively is related to the circumferential length and radial depth of the crack. Then we present a novel method to quantitatively identify the crack. The feasibility of the proposed method was numerically investigated. The method only requires the longitudinal excitation mode of guided wave in the pipe, which shows the good potential for real application or in-situ damage monitoring. © (2011) Trans Tech Publications, Switzerland.