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.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the influence of laser pulse energy, duration, and travel speed on weld dimension, microstructure and hardness during overlap laser bead on plate spot welding of low carbon steel was examined.
128 citations
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20 Feb 2003TL;DR: In this article, a system and method for assessing the quality of spot weld joints between pieces of metal includes an ultrasound transducer probing a spot weld joint, receiving corresponding echoes, and transforms the echoes into electrical signals.
Abstract: A system and method for assessing the quality of spot weld joints between pieces of metal includes an ultrasound transducer probing a spot weld joint The ultrasound transducer transmits ultrasonic radiation into the spot weld joint, receives corresponding echoes, and transforms the echoes into electrical signals An image reconstructor connected to the ultrasound transducer transforms the electrical signals into numerical data representing an ultrasound image A neural network connected to the image reconstructor analyzes the numerical data and an output system presents information representing the quality of the spot weld joint The system is trained to assess the quality of spot weld joints by scanning a spot weld joint with an ultrasound transducer to produce the data set representing the joint; then physically deconstructing the joint to assess the joint quality
127 citations
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TL;DR: In this paper, the influence of plunge depth, rotational speed, plunge rate and time on the microstructure and shear strength of FSSW-Refill was investigated.
127 citations
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TL;DR: In this paper, the electrical resistance of contacting interfaces was measured as a function of the pressure applied across the interfaces using known information about the temperature dependence of bulk resistivity and mechanical properties, a curve fitting procedure was used to establish the desired relationship of contact resistance to pressure and temperature.
Abstract: An important input property in the development of process models for resistance spot welding is electrical contact resistance A model for the pressure and temperature dependence of electrical contact resistance was developed from established concepts of contact resistance The key to developing the desired relationship is determining surface roughness characteristics, which is experimentally problematic To overcome this difficulty the electrical resistance of contacting interfaces was measured as a function of the pressure applied across the interfaces Using known information about the temperature dependence of bulk resistivity and mechanical properties, a curve fitting procedure was used to establish the desired relationship of contact resistance to pressure and temperature This empirical model agrees well with experimental measurements in the regime of low applied pressure At high pressures, predictions underestimate contact resistance, and this was attributed to strain hardening of asperit
127 citations
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TL;DR: In this article, the effect of tool geometry on the plastic flow and material mixing during friction stir spot welding (FSSW) was investigated using the particle method approach using a cylindrical pin tool with flat shoulder.
126 citations