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  1. No Access

    Article

    Robot-assisted non-destructive testing of automotive resistance spot welds

    A commercially available matrix phased array (MPA) ultrasonic imaging system was successfully integrated into a robot-assisted automated non-destructive testing (NDT) method for resistance spot weld applicatio...

    Changwook Ji, Jeong K. Na, Yoon-Seok Lee, Yeong-Do Park… in Welding in the World (2021)

  2. No Access

    Article

    Liquid zinc penetration induced intergranular brittle cracking in resistance spot welding of galvannealed advanced high strength steel

    This study aims to explore the mode of Zn transportation and the failure mechanism of cracking associated with liquid metal embrittlement (LME) using fractography as the key technique. A three-point bend test ...

    Siva Prasad Murugan, Jong Bae Jeon, Changwook Ji, Yeong-Do Park in Welding in the World (2020)

  3. No Access

    Article

    Critical design parameters of the electrode for liquid metal embrittlement cracking in resistance spot welding

    The present work studied the influence of the geometric design of the electrode on Zn-assisted liquid metal embrittlement (LME) cracking during resistance spot welding (RSW). LME cracking of the galvannealed t...

    Siva Prasad Murugan, Kaisar Mahmud, Changwook Ji, Ilguk Jo… in Welding in the World (2019)