Nominal stresses have been used for a long time the assessment of fatigue resistance welded joints, however, this approach has strong limitations since definition nominal stress may be subjective complex details and/or loading. On other hand, hot-spot proposed to overcome these considering structural geometrical discontinuities. However, methods also present certain limitations, and study aims ...

A 3-D finite element model is used to simulate water jet spot welding. The simulation is validated using the experimental data obtained by one of authors with other workers. The simulations identify parameters which correlate well with the quality of the welds produced. In particular the levels of equivalent plastic strain (PEEQ) and shear stress directions are shown to predict whether or not t...

Resistance spot welding (RSW) aluminum alloys has a major problem of inconsistent quality from weld to weld, because the problems non-uniform oxide layer. The high resistivity causes strong heat released which influence significantly on electrode lifetime and quality. Much effort been devoted experimentally study sheet surface characteristics for as-received pretreatment by pickling in NaOH gla...

Abstract Microstructure development is examined for a specialized spot weld that used as solid-state closure process austenitic stainless steel tubing, referred to pinch welding. In order elucidate the microstructural evolution of weld, series test welds were made at nominal conditions using tubing and production like components. These normally terminate after twelve cycles 60 Hz AC process. th...