TY - JOUR
T1 - Robot-assisted non-destructive testing of automotive resistance spot welds
AU - Ji, Changwook
AU - Na, Jeong K.
AU - Lee, Yoon Seok
AU - Park, Yeong Do
AU - Kimchi, Menachem
N1 - Funding Information:
This study has been financially supported by the Ministry of Economy and Finance and conducted with the support of the Korea Institute of Industrial Technology as “Development of metal 3D printing material and process optimization technology for medium and large-sized transportation parts mold manufacture project (KITECH JE200008)”.
Publisher Copyright:
© 2020, International Institute of Welding.
PY - 2021/1
Y1 - 2021/1
N2 - 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 applications. The NDT system utilizes a dual-time gate feature, where optimized time gate positions and widths were determined for near-normal incidence inspections of spot welds in thin materials. The effects of probe contact pressure and ultrasonic beam incident angle were also studied using the robot arm. Based on the current robot-assisted automated NDT results, an optimized contact pressure of 0.5 lb, and an incidence angle of ± 0.5o relative to the normal direction were determined. Under these optimum probe contact conditions, it was found that a measurement uncertainty of less than 5% can be achieved when the gate position is set to be between one-half and two-third positions of the total part thickness, along with a gate width equals to one-third of the total stack thickness.
AB - 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 applications. The NDT system utilizes a dual-time gate feature, where optimized time gate positions and widths were determined for near-normal incidence inspections of spot welds in thin materials. The effects of probe contact pressure and ultrasonic beam incident angle were also studied using the robot arm. Based on the current robot-assisted automated NDT results, an optimized contact pressure of 0.5 lb, and an incidence angle of ± 0.5o relative to the normal direction were determined. Under these optimum probe contact conditions, it was found that a measurement uncertainty of less than 5% can be achieved when the gate position is set to be between one-half and two-third positions of the total part thickness, along with a gate width equals to one-third of the total stack thickness.
KW - Advanced high-strength steel
KW - Matrix phased array
KW - Resistance spot welds
KW - Robot assisted inspection
KW - Ultrasonic non-destructive testing
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U2 - 10.1007/s40194-020-01002-1
DO - 10.1007/s40194-020-01002-1
M3 - Article
AN - SCOPUS:85092745686
VL - 65
SP - 119
EP - 126
JO - Welding in the World, Le Soudage Dans Le Monde
JF - Welding in the World, Le Soudage Dans Le Monde
SN - 0043-2288
IS - 1
ER -