Gas Metal Arc Welding of Advanced High Strength Steel - Developments for Optimized Welding Control and Weld Quality

Joaquin, Armando; Elliott, Adrian; Jiang, Canhua; Rajan, V. B.; Hartman, D.; Karas, Chris

doi:10.4271/2006-01-0300

Cited by 12 publications

(2 citation statements)

References 2 publications

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“…In fact, small weld nugget coupled with the presence of porosity and solidification cracks can experience increasing shear stress during tensile shear test at the faying surface and promote interfacial failure of the joint. According to some researchers, 17 shrinkage voids are one of the main causes for the interfacial failure mode.…”

Section: Failure Modementioning

confidence: 99%

Microstructure and failure behaviour of resistance spot welded DP980 dual phase steel

Nikoosohbat

Kheirandish

Goodarzi

et al. 2010

Materials Science and Technology

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In this research, microstructure and overload failure behaviour of resistance spot welded DP980 were investigated. Microstructural characterisation, microhardness test and static tensile shear test were conducted. Fusion zone size proved to be the most important controlling factor of spot weld peak load and energy absorption. The results of this study demonstrated that the conventional weld size recommendation of d=4 t1/2 is not sufficient to ensure the pullout failure mode for DP980 steel resistance spot welds during the tensile shear test. In pullout mode, generally, failure was initiated at heat affected zone/base metal interface, where softening occurs due to the tempering of martensite. However, when heavy expulsion occurs, pullout failure tends to be initiated at fusion zone/heat affected zone interface. It was shown that heavy expulsion and associated large electrode indentation can reduce load carrying capacity and energy absorption capability of DP980 spot welds.

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Section: Failure Modementioning

confidence: 99%

Microstructure and failure behaviour of resistance spot welded DP980 dual phase steel

Nikoosohbat

Kheirandish

Goodarzi

et al. 2010

Materials Science and Technology

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“…Therefore, the weld lines in the chassis parts affect the overall performances of the chassis parts. Additionally, the geometry of the weld bead has a dominant influence on the mechanical performance of the chassis parts, that is, on their tensile strengths and fatigue characteristics [5][6][7][8][9]. The bead geometry is composed of five parts, including the weld face, root, toe, leg, and throat.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Weld Quality Prediction Using a Laser Vision Sensor in a Lap Fillet Joint during Gas Metal Arc Welding

Lee

Hwang

Kim

et al. 2020

Sensors

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Nondestructive test (NDT) technology is required in the gas metal arc (GMA) welding process to secure weld robustness and to monitor the welding quality in real-time. In this study, a laser vision sensor (LVS) is designed and fabricated, and an image processing algorithm is developed and implemented to extract precise laser lines on tested welds. A camera calibration method based on a gyro sensor is used to cope with the complex motion of the welding robot. Data are obtained based on GMA welding experiments at various welding conditions for the estimation of quality prediction models. Deep neural network (DNN) models are developed based on external bead shapes and welding conditions to predict the internal bead shapes and the tensile strengths of welded joints.

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Improvement of fatigue strength of lap fillet joints by using tandem MAG welding in a 590-MPa-grade galvannealed steel sheet

Kim

Kang

et al. 2017

Int J Adv Manuf Technol

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Gas Metal Arc Welding of Advanced High Strength Steel - Developments for Optimized Welding Control and Weld Quality

Cited by 12 publications

References 2 publications

Microstructure and failure behaviour of resistance spot welded DP980 dual phase steel

Microstructure and failure behaviour of resistance spot welded DP980 dual phase steel

Real-Time Weld Quality Prediction Using a Laser Vision Sensor in a Lap Fillet Joint during Gas Metal Arc Welding

Improvement of fatigue strength of lap fillet joints by using tandem MAG welding in a 590-MPa-grade galvannealed steel sheet

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