首页 | 本学科首页   官方微博 | 高级检索  
     


2D finite element modeling of the non-collinear mixing method for detection and characterization of closed cracks
Affiliation:1. School of Mechanical and Mining Engineering, University of Queensland, Brisbane, Australia;2. University of Bordeaux, CNRS, Arts et Metiers ParisTech, I2M, UMR 5295, F-33400 Talence, France;1. Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK;2. Department of Engineering for Innovation, University of Salento, via per Monteroni, Lecce 73100, Italy;1. Center for Safety Measurements, Division of Metrology for Quality of Life, Korea Research Institute of Standards and Science (KRISS), 267 Gajeong-ro, Yuseong-gu, Daejeon, Republic of Korea;2. Safety Qualification Technology Center, KHNP Central Research Institute, 1312 Yuseong-daero, Yuseong-gu, Daejeon, Republic of Korea;1. Department of Mechanical Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi 441-8580, Japan;2. Department of Aeronautics and Astronautics, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8540, Japan;1. AMP- Division, CSIR- National Metallurgical Laboratory, Jamshedpur 831007, India;2. MTE- Division, CSIR- National Metallurgical Laboratory, Jamshedpur 831007, India;3. CNDE, Mechanical Engineering Department, Indian Institute of Technology Madras, Chennai 600036, India
Abstract:The non-collinear mixing technique is applied for detection and characterization of closed cracks. The method is based on the nonlinear interaction of two shear waves generated with an oblique incidence, which leads to the scattering of a longitudinal wave. A Finite Element model is used to demonstrate its application to a closed crack. Contact acoustic nonlinearity is modeled using unilateral contact law with Coulomb׳s friction. The method is shown to be effective and promising when applied to a closed crack. Scattering of the longitudinal wave also enables us to image the crack, giving its position and size.
Keywords:Non-colinear mixing  Nonlinear acoustics  Contact acoustic nonlinearity  Finite element method  Closed crack
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号