文献类型：期刊文献

英文题名：Integrated triple-frequency transducer for one-way wave mixing: theory, verification and weak bond detection

作者：Chen, Weitao[1];Liu, Xiewen[1];Zhu, Wujun[1];Weng, Siming[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai Key Lab Intelligent Sensing & Detect, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2026

卷号：287

外文期刊名：MEASUREMENT

收录：;EI(收录号：20262921106031);Scopus(收录号：2-s2.0-105044527719);WOS:【SCI-EXPANDED(收录号:WOS:001825867900001)】；

基金：This research was funded by the National Natural Science Founda-tion of China (Grant No. 12004114) .

语种：英文

外文关键词：Nonlinear ultrasonic; One-way wave mixing; Weak bond; Integrated transducer

摘要：Adhesively bonded structures widely used in various industrial fields inevitably suffer from weak bonds, but the reliable detection of such damage remains challenging. The backward mixed waves generated by one-way wave mixing feature high sensitivity to adhesive layers. However, generating these mixed waves requires positioning multiple transducers at the same physical location, which imposes severe spatial constraints and compromises detection precision. To address this limitation, a customized spatial configuration within an integrated triple-frequency transducer was developed specifically for adhesive-bond inspection by one-way wave mixing, satisfying the quasi-collinear geometric requirements. The design comprises an outer annular element for exciting the primary longitudinal wave, an inner D-shaped element for exciting the primary shear wave, and another inner D-shaped element for receiving the backward mixed waves. Through simulations and experiments, the feasibility of the proposed transducer layout was validated for one-way wave mixing. Subsequently, the extraction of the normalized nonlinear parameter via the developed transducer distinctly reconstructed the weak bond zone with high visual contrast. Experimental validation confirms that the proposed transducer can reliably capture backward mixed waves with high sensitivity to weak bonds. This study demonstrates a specialized transducer layout for adhesive-bond inspection by one-way wave mixing, which holds practical potential for single-sided nondestructive evaluation.