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Spot welding

About: Spot welding is a research topic. Over the lifetime, 12491 publications have been published within this topic receiving 89845 citations. The topic is also known as: Spot_welding.


Papers
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Journal ArticleDOI
TL;DR: In this article, a probeless friction stir spot welding (P-FSSW) was used to weld a third generation Al-Li alloy to obtain a symmetric basin shape.

54 citations

Patent
16 Jan 1984
TL;DR: In this article, a multivariable process monitor and method of monitoring a resistance spot welding process to yield instantaneous information on weld quality during the weld cycle is presented, which is the reference for the weld quality logic that accepts or rejects the weld.
Abstract: A multivariable process monitor and method of monitoring a resistance spot welding process to yield instantaneous information on weld quality during the weld cycle. Sensors on the machine measure welding input variables and workpiece response variables and provide signals to a microcomputer system. A simplified analytical model of the spot welding process is incorporated in the microcomputer and is the reference for the weld quality logic that accepts or rejects the weld. Faulty welds are diagnosed and the reason displayed.

53 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of laser power and on time on the weld thermal cycle and weld metal microstructure and hardness during laser spot welding of low alloy steel was examined.
Abstract: Theoretical and experimental investigations have been carried out to examine the influence of laser power and on time on the weld thermal cycle and weld metal microstructure and hardness during laser spot welding of low alloy steel. A transient heat transfer model that takes into account the temperature dependence of material properties and latent heat of phase transformation is employed to simulate thermal cycles and cooling rates experienced by the material under various combinations of power and on times. Two models for predicting the microstructure and hardness of the weld pool metal from the cooling rates are used to evaluate the results.

53 citations

Journal ArticleDOI
TL;DR: In this paper, a dynamical non-linear model of the spatial time-dependant evolution of A 3 point during a particular sequence of resistance spot welding in steel material is presented.
Abstract: This paper presents a dynamical non linear model of the spatial time-dependant evolution of A 3 point during a particular sequence of resistance spot welding in steel material. The model is based on a solution to the heat equation, expressed in cylindrical coordinates inside the joint area, and when the source term is attributed to the electrical power. By the mean of the steel binary Fe–C diagram and the deduced t -dependant temperature rise profile, an estimation of the A 3 point spatial range date is given and compared to further results. The obtained temperature profile is yielded, taking into account main parameters variations, as a guide to non-destructive protocols and thermal characteristics investigation

53 citations

Journal ArticleDOI
TL;DR: In this paper, a new refill friction spot welding process called Threaded Hole Friction Spot Welding (THFSW) was introduced to join AA5052 aluminum to short carbon-fiber-reinforced polypropylene composite sheets.

53 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023208
2022415
2021355
2020620
2019739
2018744