Simulation study on steel plate image testing with Lamb wave based on linear array focusing-time reversal method

Article type: Research Article

Authors: Jun, Tu^{a; b} | Gongzhe, Qiu^a | Xiaochun, Song^{a; b} | Xu, Zhang^{a; b} | Donglin, Li^a;

Affiliations: [a] School of Mechanical Engineering, Hubei University of Technology, Wuhan, China | [b] Key Laboratory of Modern Manufacture Quality Engineering, Wuhan, China

Correspondence: [*] Corresponding author: Li Donglin, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China. Tel.: +86 027 59750418; E-mail: Juntu@hbut.edu.cn

Abstract: The circular array sensor arrangement and time reversal technique are applied in the present ultrasonic imaging method, of which the testing efficiency and flexibility is limited for the large scale steel plate. In this paper, a Lamb wave imaging method based on the linear array focusing-time reversal (LAFTR) technique is presented. The steps of the LAFTR imaging method for large scale steel plate are concluded. The COMSOL software is used to establish the finite element model for the steel plate testing based on LAFTR method, and the MATLAB software is used to realize the imaging program. Finally the experimental results indicate that the LAFTR method can get high precision images for the steel plate.

Keywords: Linear array focusing, time reversal, steel plate testing, ultrasonic imaging

DOI: 10.3233/JAE-171173

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 59, no. 4, pp. 1561-1569, 2019