Dual-Tree Complex Wavelet Analysis and Its Application in Defect Detection of Workpiece for Cross Wedge Rolling

摘要：

Aiming to miss-detection of internal tiny flaw of workpiece for cross wedge rolling, it is proposed a new ultrasonic signal testing method based on dual-tree complex wavelet transform (DT-CWT). By constructing new dual-tree complex wavelet bases, and by taking advantage of near shift-invariance of DT-CWT, it can improve common wavelet analysis methods for ultrasonic signal testing based on real orthogonal discrete wavelet transform. Experiments indicate that the method can extract weak defect feature and its results demonstrate the validity of the proposed method.

关键词： DT-CWT ultrasonic test cross wedge rolling flaw

作者: Zhixin Chen Chenglin Wang Zhenghuan Hu Shikun Xie

作者单位: Beijing Area Logistics System & Technology MajorLaboratory, Beijing Wuzi UniversityBeijing, China School of Mechanical EngineeringUniversity of Science and Technology BeijingBeijing, China School of Engineering, Jinggangshan University Jian, Jiangxi, China

会议类型: 国际会议

会议名称: 2010 3rd International Conference on Advanced Computer Theory and Engineering(2010年第三届先进计算机理论与工程国际会议 ICACTE 2010)

会议地点: 成都

会议语种:英文

页码: 1-4

在线出版日期: 2010-08-20（万方平台首次上网日期，不代表论文的发表时间）