Analytical insight into "breathing" crack-induced acoustic nonlinearity with an application to quantitative evaluation of contact cracks

• Main Authors: Wang, Kai, Liu, Menglong, Su, Zhongqing, Yuan, Shenfang, Fan, Zheng
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Mechanical engineering; ‘‘Breathing” Crack; Contact Acoustic Nonlinearity
• Online Access: https://hdl.handle.net/10356/140926
• Institution: Nanyang Technological University

To characterize fatigue cracks, in the undersized stage in particular, preferably in a quantitative and precise manner, a two-dimensional (2D) analytical model is developed for interpreting the modulation mechanism of a "breathing" crack on guided ultrasonic waves (GUWs). In conjunction wi...