西安理工大学学报2018，Vol.34Issue(4)：489-494,6.DOI:10.19322/j.cnki.issn.1006-4710.2018.04.017
基于超声导波的管道缺陷量化评估仿真研究
Simulation study of the characterization of pipe defect based on ultrasonic guided-waves
摘要
Abstract
The ultrasonic guided-waves (UGW) is an emerging non-destructive testing technique in recent years.Compared with conventional inspection techniques, such as ultrasonic inspection and magnetic flux leakage testing, the UGW can enable long-range, comprehensive and efficient inspection, thus arousing more attention, especially for pipe inspection.In pipe inspection based on the UGW, the pulse-echo method is widely used with the defect information obtained by conducting an analysis of the echo signal.The UGW have currently realized the reorganization and location of pipe defects.However, due to the irregular shape of the actual pipe defect, the reflected echo signal is often very complex, and it cannot achieve the quantitative detection of pipe defects.In this paper, the interaction between ultrasonic guided waves and pipe defect is studied by the finite-element (FE) numerical simulation.A quantitative evaluation method for axial length of pipe defect is proposed by concerning two boundary reflection signals generated at the front and rear edges of defects, with the conclusions further verified by the FE simulation test.关键词
超声导波/有限元仿真/缺陷长度Key words
ultrasonic guided-waves/finite element simulation/defect length分类
机械制造引用本文复制引用
梁伯翱,赵锴,王晓娟,陈晓晓..基于超声导波的管道缺陷量化评估仿真研究[J].西安理工大学学报,2018,34(4):489-494,6.基金项目
国家自然科学基金资助项目(51505374) （51505374）
