Surface crack monitoring by Rayleigh waves with a piezoelectric-polymer-film ultrasonic transducer array

• Main Authors: Li, Xiaotian, Wong, Voon-Kean, Yousry, Yasmin Mohamed, Lim, David Boon Kiang, Subhodayam, Percis Teena Christopher, Yao, Kui, Feng, Liuyang, Qian, Xudong, Fan, Zheng
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Article
• Language: English
• Published: 2023
• Subjects: Engineering::Mechanical engineering; Ultrasonic; Piezoelectric Transducer Array
• Online Access: https://hdl.handle.net/10356/169465
• Institution: Nanyang Technological University

This paper presents a method for measuring surface cracks based on the analysis of Rayleigh waves in the frequency domain. The Rayleigh waves were detected by a Rayleigh wave receiver array made of a piezoelectric polyvinylidene fluoride (PVDF) film and enhanced by a delay-and-sum algorithm. This me...