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
More filters
TL;DR: In this paper, a lap-joint configuration with the steel positioned on top of the aluminium and with a texture faced down to the aluminium surface was investigated to increase the maximum tensile shear load of the Fe-Al joints.
39 citations
Patent•
27 Sep 2005
TL;DR: In this article, a method and apparatus for ultrasonic in-process monitoring and feedback of resistance spot weld quality uses at least one transducer located in the electrode assembly transmitting through a weld tip into an underway weld.
Abstract: A method and apparatus for ultrasonic in-process monitoring and feedback of resistance spot weld quality uses at least one transducer located in the electrode assembly transmitting through a weld tip into an underway weld Analysis of the spectrum of ultrasonic waves provides the operator with an indication of the size, thickness, location, dynamics of formation and quality of the spot weld The method presents a fundamentally new physical approach to the characterization of the spot weld quality Together with transmission mode it includes new modes of operation of ultrasonic probes such as a reflection mode and simultaneous use of transmission and reflection modes, and a new physical interpretation of the signal analysis results
39 citations
TL;DR: In this article, the influence of variation in position of spot welds is investigated with respect to geometrical quality, by simulating and analyzing the geometric variation of an A-pillar assembly.
Abstract: The body of a car is typically joined by thousands of spot welds. The spot welds guarantee the strength of the car, but their positions also affect the geometrical quality of subassemblies and the final product. In practice, the positions of the weld points often deviate from nominal position. By analyzing industrial scanning data, deviations of spot weld positions are found to be of magnitudes up to 19 mm. In this paper, the influence of variation in position of spot welds is investigated with respect to geometrical quality, by simulating and analyzing the geometrical variation of an A-pillar assembly.
39 citations
TL;DR: In this article, two main failure mechanisms and failure zones are identified: (i) strain localization in the base metal/subcritical Heat Affected Zone (HAZ), (ii) ductile shear at the interface in the weld nugget.
39 citations
TL;DR: In this paper, the factors governing the mechanical performance of low carbon resistance spot welds were analyzed and correlations among the process parameters (welding current, welding time, electrode force and holding time), physical spot weld attributes and mechanical performance were analyzed.
Abstract: The present paper addresses the factors governing the mechanical performance of low carbon resistance spot welds. Correlations among the process parameters (welding current, welding time, electrode force and holding time), physical spot weld attributes and mechanical performance are analysed. Peak load and energy absorption of spot welds during the tensile shear test are used to describe spot welds performance. It is shown that weld nugget size, electrode indentation, failure mode and strength/ductility of the failure location are the main factors affecting peak load and energy absorption of spot welds.
39 citations