Search results for "friction stirwelding"

showing 2 items of 2 documents

FSW of AA2139-T8 Butt joints for aeronautical applications

2011

The effect of process parameters on mechanical and microstructural properties of AA 2139 T8 joints produced by friction stir welding (FSW) was analysed by means of statistical tools. Three different parameters were taken into account: angular speed ( ω), welding speed ( va), and plunging depth ( p); each of them was varied on three levels. Forces and temperatures achieved during the welding were monitored and analysed for all joints. An accurate microstructural analysis was performed: the occurrence of some remarkable defects, typical of FSW, such as tunnel or lack of penetration, was related to actual process parameters adopted. The extension of each FSW characteristic zone was measured a…

Materials scienceMechanical Engineeringmicrostructuredesign of experimentAngular velocityWeldingmechanical propertiesMicrostructureIndentation hardnessfriction stirweldinglaw.inventionanalysis of the variancelawvisual_artUltimate tensile strengthFSW butt joints microstructureAluminium alloyvisual_art.visual_art_mediumButt jointaluminium alloyFriction stir weldingGeneral Materials ScienceComposite materialSettore ING-IND/16 - Tecnologie E Sistemi Di Lavorazione
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Numerical Procedure For Residual Stresses Prediction In Friction Stir Welding

2011

The prediction of residual stresses is a relevant and, under many points of view, still open issue for a proper welding process design. In the present paper a 3D FE model, with general validity for different joint configurations, was used to simulate the Friction Stir Welding (FSW) process of butt joints through a single block approach. The model is able to predict the residual stresses by considering thermal actions only, thanks to a new time efficient approach. A good agreement between calculated and experimentally measured data was found; the effectiveness of the presented numerical procedure was evaluated by comparing the calculation times of the proposed method with the ones of already…

Materials sciencebusiness.industryFriction stirweldingresidual stressesFEMApplied MathematicsMetallurgyGeneral EngineeringProcess (computing)Structural engineeringComputer Graphics and Computer-Aided DesignFinite element methodResidual stressThermalButt jointFriction stir weldingbusinessJoint (geology)Settore ING-IND/16 - Tecnologie E Sistemi Di LavorazioneAnalysisBlock (data storage)
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