7000 series aluminum alloys are widely used in the automotive industries for structural lightweight components due to their exceptional high strength to weight ratio. however, this class of aluminum alloy is difficult to join by conventional fusion welding techniques so friction stir welding (fsw) widely is used for welding this alloys. the process has been demonstrated to be effective and is c...

This paper presents an overview of our recent enhanced 3D extended finite element toolkit for Abaqus (XFA3D) for fatigue damage assessment of welded aluminum structures under block loading. To alleviate the computational burden associated with the insertion and propagation of arbitrary cracks in the presence of a welding induced residual stress field, a nodal enriched displacement field coupled...

Welded mild steel is used in different applications engineering. To strengthen the joint, weld can be reinforced by adding titanium alloy powder to joint. This results formation of incomplete martensite a welded The affects mechanical properties. Therefore, this study aims predict volume fraction butt joints understand complex phenomena during microstructure formation. do so, combination finite...

The paper gives an outline of the non-destructive evaluation (NDE) methods currently being pursued at the Admiralty Marine Technology Establishment, Dunfermline, Scotland. The methods are being used to locate and characterise fatigue cracks in high yield strength welded steel structures. The techniques have been applied principally to large fatigue models (5' and 9' diameter) as part of a compr...

The effect of the microstructure heterogeneity on the tensile plastic deformation characteristic of friction-stir-welded (FSW) dual-phase (DP) steel was investigated for the potential applications on the lightweight design of vehicles. Friction-stir-welded specimens with a butt joint configuration were prepared, and quasi-static tensile tests were conducted, to evaluate the tensile properties o...

In fact, in the welding process, there are many problems that arise. Such as cracking caused by excessive stress Residual can result a decrease mechanical properties of material such brittle fracture, fatigue, and cracking. The purpose this study was to determine comparison tensile strength ASTM plate welded joints A36 with variations single vee butt bevel knowing effects ofpost-weldd heat trea...

Flash−butt welded rail is widely used in railway transportation; however, the joint vulnerable after a long time of service, and its damage mechanism controversial. Here, tensile reciprocating friction tests were carried out to analyze mechanical tribological behaviors between base metal U75VG rail. The results show that flash−butt welding promotes pearlite transform into ferrite, leading relat...