Comparative study on CO2 laser overlap welding and resistance spot welding for automotive body in white

Mei, Lifang; Yan, Dongbing; Chen, Genyu; Xie, Daoxin; Zhang, Mingjun; Xia, Ge

doi:10.1016/j.matdes.2015.04.031

Cited by 18 publications

(5 citation statements)

References 12 publications

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“…The main key performance indicators (KPIs) or otherwise the measurable values used to determine the quality of a joint without considering a specific application can be classified into three main categories. The 1st one concerns the joint's fusion zone features, the 2nd one concerns the joint's mechanical performance, and the 3rd one concerns the joint's While for many applications offline inspection can be considered adequate, especially if the designed product includes a single or a few welds, for products that have a lot of joints, the effects of process variability, are multiplied (e.g., body-in-white [9], battery assembly for electric vehicles, etc. [4]).…”

Section: Quality Indicatorsmentioning

confidence: 99%

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Quality Assurance in Resistance Spot Welding: State of Practice, State of the Art, and Prospects

Stavropoulos,

Sabatakakis

2024

Metals

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Resistance spot welding is a process with high variability regarding the quality of the produced joints. This means that key performance indicators (KPIs) such as geometrical and mechanical features as well as failure modes can deviate from the initial design even if the same process parameters are used. The industry has developed quality assurance programs and quality control methods for tracking these KPIs; however, most of them are based on offline or/and destructive practices. On the other hand, state-of-the-art approaches have made online quality assessment feasible and proved its necessity if a 100% quality rate is required. However, limited attention has been given to “closing the loop” and providing feedback for preventing and correcting process anomalies that cause quality variations in real time. In this study, the main gaps between the state of practice and the state of the art are discussed in the context of quality assurance for resistance spot welding. Finally, the role and importance of digital twins by taking into consideration the entire welding ecosystem in quality assurance are discussed in order to form the prospects for the road ahead.

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Section: Quality Indicatorsmentioning

confidence: 99%

“…While for many applications offline inspection can be considered adequate, especially if the designed product includes a single or a few welds, for products that have a lot of joints, the effects of process variability, are multiplied (e.g., body-in-white [9], battery assembly for electric vehicles, etc. [4]).…”

Section: Introductionmentioning

confidence: 99%

Quality Assurance in Resistance Spot Welding: State of Practice, State of the Art, and Prospects

Stavropoulos,

Sabatakakis

2024

Metals

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“…The joining of materials of different grades and thicknesses-tailored fit body in white-is mainly achieved by resistance spot welding. L. Mei et al [27] performed a comparative analysis between resistance welds and multi-segment intermittent welds of a certain length and found better static stiffness for laser welds compared to resistance welds. The laser welding process, even though more expensive to implement, is more agile, more controllable and can produce welds with better quality and flexibility.…”

Section: Introductionmentioning

confidence: 99%

Metallographic Study of Overlapped Laser Welds of Dissimilar Materials

Guzanová

Janoško

Draganovská

et al. 2022

Metals

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The paper deals with the metallographic analysis of overlapped laser welds of dissimilar materials based on galvanized and ungalvanized steels in various combinations. In addition to a gallery of metallographic sections, the paper presents the monitoring of weld defects, the measurement of selected weld geometrical characteristics and changes in weld microstructure by measuring the microhardness profile across the joint. The mixing of materials was monitored by area and line EDX analysis in the melting zone. Subsequently, the load carrying capacity of the formed joints was determined and compared with FEM simulation. Finally, the dependences of hardness and strength of welds on carbon content and carbon equivalent were determined.

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“…Various welding techniques are available [7][8][9]. In comparison with traditional welding techniques, laser beam welding has the advantages of a high energy density, a high welding speed, a deeper penetration depth, and a small heat-affected zone (HAZ) [10][11][12][13][14][15]. Therefore, this paper is especially intended to discuss a laser welding process that can meet the aforementioned requirements of a joining process.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Fiber Laser Welding of Aluminum Alloy with Beam Oscillation

et al. 2019

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Laser welding with beam oscillation is applied to join aluminum alloy plates in butt configuration. The effects of beam oscillating patterns on the quality of welds are compared and analyzed. The results indicate that beam oscillation can improve the weld formation and microstructure of butt joints. The circular oscillating weld has the features of fine grain and uniformly dispersed dendrites in the strengthening phase, and the porosity inhibitory effect of circular oscillation is the most obvious. In addition, beam oscillation has few effects on the tensile strength of welds, but exerts an influence on the elongation of welds.

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Comparative study on CO2 laser overlap welding and resistance spot welding for automotive body in white

Cited by 18 publications

References 12 publications

Quality Assurance in Resistance Spot Welding: State of Practice, State of the Art, and Prospects

Quality Assurance in Resistance Spot Welding: State of Practice, State of the Art, and Prospects

Metallographic Study of Overlapped Laser Welds of Dissimilar Materials

Microstructure and Mechanical Properties of Fiber Laser Welding of Aluminum Alloy with Beam Oscillation

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