Simulation analysis of ultrasonic detection for resistance spot welding based on COMSOL Multiphysics

Jing Liu, Guocheng Xu, Lei Ren, Zhihui Qian, Luquan Ren

    Research output: Contribution to journalArticlepeer-review


    The simulated calculation is carried out on the ultrasonic detection process for stainless steel resistance spot welding by the finite element technology. It reveals the ultrasonic propagation characteristics and regularity in the inner of the spot welds, and provides a theoretical basis for selecting the Am as a characteristic parameter to represent the fusion state of the spot weld in the actual ultrasonic detection. Then the ultrasonic detection of spot welds with the presence of the porosity defect which easily appears is simulated, and the effect of the porosity on the ultrasonic propagation characteristics is studied. It is found that the ultrasonic reflection and transmission occur at the porosity defect, and finally the correctness and validity of the simulation and the model are verified by the experimental method.

    Original languageEnglish
    Pages (from-to)1-8
    Number of pages8
    JournalInternational Journal of Advanced Manufacturing Technology
    Issue number5
    Early online date26 Jun 2017
    Publication statusPublished - Nov 2017


    • Porosity defect
    • Resistance spot welding
    • Simulation analysis
    • Ultrasonic detection


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