Spot welds have a significant part in the creation of automotive vehicles. Since integrity of, for example, car, is dependent on performance multiple welds, it important to ensure quality each spot weld. Several attempts been made order determine but most them do not focus applicability manufacturing process. weld inspections are often performed using back heating. However, during manufacturing...

The Resistance Spot Welding (RSW) process requires simultaneous application of high electrical current and appropriate pressure over short periods in order to keep the molten material inside the weld zone. Values of these parameters vary in function of the characteristics of the materials to be welded. The application of the electrical current is by means of two copper electrodes brought in con...

This work aims at investigating the spot weldability of a new advanced Quenching and Partitioning (Q&P) steel and a Transformation Induced Plasticity (TRIP) steel for automotive applications by evaluating the effects of the main welding parameters on the mechanical performance of their dissimilar spot welds. The welding current, the electrode tip voltage and the electrical resistance of sheet s...

Bin Zhou, M. D. Thouless, and S. M. Ward Department of Mechanical Engineering Department of Material Science and Engineering University of Michigan Ann Arbor, MI, 48109 Scientific Research Laboratory Ford Motor Company Dearborn, MI, 48124 Abstract A methodology for determining the cohesive facture parameters associated with pull-out of spot welds is presented. Since failure of a spot weld by pu...

Abstract The resistance spot welding (RSW) method was used to join aluminum alloy AA 1050 and copper UNS C50100 sheets. Mechanical properties of the joints were examined. influence process parameters on tensile shear force discussed. design experiments (DOE) analyze mechanical joints. Three RSW used: current, squeeze time, time. results showed that joint stress increased with increasing current...

Of particular importance and interest are the effects of pulsed Nd:YAG laser beam welding parameters on penetration and microstructure characterization of DP1000 butt joint, which is widely used in the automotive industry nowadays. Some key experimental technologies including pre-welding sample preparation and optimization design of sample fixture for a sufficient shielding gas flow are perform...