Topic
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.
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TL;DR: In this article, the effects of failure mode and expulsion on the performance of ultra-fine grained sheet spot welds have been investigated and the welding current and time of resistance spot welding process according to these subjects are optimized.
29 citations
Patent•
06 Jun 2007
TL;DR: In this article, a double structure including Cu or a Cu alloy as an electrode body and a core material made of W, Mo, a W-based alloy, or a Mo-based Alloy embedded in a surface of the electrode body, which is abutted against a material to be welded, is presented.
Abstract: Provided is an electrode (1) which has a double structure including Cu or a Cu alloy as an electrode body (2) and a core material (3) made of W, Mo, a W-based alloy, or a Mo-based alloy embedded in a surface of the electrode body (2) which is abutted against a material to be welded, the core material (3) being formed by using W, Mo, the W-based alloy, or the Mo-based alloy which is in the form of a fibrous structure extended by sintering, swaging, and annealing in an electrode axis direction, the fibrous structure having a horizontal cross-sectional average particle diameter of 50 µm or more and an aspect ratio of 1.5 or more. The electrode (1) can be used as an inexpensive electrode obtained by suppressing particle dropping/attrition and defects in electrodes for spot welding, in which heat and pressure are applied repeatedly, stably enhancing durability.
29 citations
Patent•
03 Jun 2004TL;DR: In this paper, a two-dimensional array of ultrasonic transducers arranged with a delay line for positioning adjacent a surface of a weld is used to evaluate the size and/or quality of a spot weld.
Abstract: A method and apparatus for evaluating the size and/or quality of a spot weld. The apparatus includes a two-dimensional array of ultrasonic transducers arranged with a delay line for positioning adjacent a surface of a weld. A layer of gel is placed between the delay line and the weld surface. The array of transducers emit ultrasonic waves that pass into the weld. The reflected waves are received by the transducers and relayed to a central processing unit that analyzes the time delay, amplitude, and amplitude attenuation to calculate the border of the weld nugget, the thickness of the welded material, the thickness of the gel layer, and other factors contributing to weld quality.
29 citations
TL;DR: Wang et al. as mentioned in this paper proposed a method to solve the problem of artificial intelligence using natural science foundation of China (No. 51775091, 51405335 and 51575383).
Abstract: Natural Science Foundation of China (No. 51775091, 51405335 & 51575383)
Science and technology project of Guangdong Province (No. 2013B090600149)
29 citations
09 Jan 2020
TL;DR: In this paper, an innovative technique is employed to modify the microstructure and increase the mechanical characteristics of the Al5083 joint made by friction stir spot welding (FSSW).
Abstract: In this study, an innovative technique is employed to modify the microstructure and increase the mechanical characteristics of the Al5083 joint made by friction stir spot welding (FSSW). In this te...
29 citations