Ultrasonic TOFD Detection by Finite Element Simulation Method

Abstract:

This paper investigated the ultrasonic mechanism of Time of Flight Diffraction (TOFD) by finite element analysis for the better applications of ultrasonic TOFD (Time of Flight Diffraction) detection technology. The welding steel plate with the artificial defects is used in the finite element analysis model. The experimental A-scan signal with higher noise is filtered by the wavelet transform, which can clearly show defective diffracted wave. The software simulation of ultrasound is used to present the propagation process of ultrasonic signal inside the sample. Simulation results are compared with the experimental results, which shows valid basis for the practical TOFD ultrasonic detection methods in industrial applications.

• Periodical: Applied Mechanics and Materials (Volumes 602-605)
• Pages: 1594-1597
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.602-605.1594
• Online since: August 2014
• Authors: Han Xin Chen*, Shi Qi Yang
• Keywords: Finite Element Model (FEM), TOFD Detection, Ultrasonic Simulation

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