1,721,175 research outputs found
Application of WEL.FA.RE. method on aluminum alloy welded joints
No full textThis work shows experimental data of WEL.FA.RE local strain method (WELded joints FAtigue REsistance) experimentation on aluminum alloy welded joints. The WEL.FA.RE. local strain method starts from the idea that the fatigue strength of welded joints depends on the whole stress-strain field near the critical zone. Therefore, it chooses a local parameter (the local strain amplitude εa) for describing the fatigue behavior of the component. This local parameter is experimentally measured with strain gages bonded at the real weld toe because of the high stress-strain gradients localized in this area. Recently the WEL.FA.RE. method has been widely tested on several structural steel welded joints of different global geometry (angular, T, butt and cruciform welded joints) and subjected to load ratios R ranging from -1 to 0.5. The method seems to work very well in fatigue strength predictions. Also in industrial cases, the WEL.FA.RE. has an immediate applicability because it requires just a simple experimental diagram εaA-R and few strain-gage experimental measurements. Because of the very good results obtained for steel welded structures and the large diffusion of other type of materials in mechanical constructions, the WEL.FA.RE. method has been tested also on aluminum alloy. Hence, this work presents experimental data obtained for cruciform and butt welded joints characterized by main plate thickness of 10, 15 and 20mm
Discussion on local approaches for the fatigue design of welded joints
No full textDesign of welded structures under fatigue is governed by two conflicting requirements: to minimize weight without compromising structure safety. Any theoretical and/or numerical approaches are necessarily based on some simplifying assumptions which, because of the complexity of fatigue phenomena, could miss some aspects involved in the real structure behaviour. On the other side, experimental approaches provide direct information on structure behaviour. In view of this, the paper will underline the importance of experimental observations and practical procedures to evaluate the stress/strain magnitude that could lead some components to unsafe working conditions. Experimental approaches may greatly support designers in all industrial applications where fast and reliable responses are strongly needed
La résistence à la fatigue des structures soudées: application d’une Methode Locale de Déformation (WEL.FA.RE.) sur des joints soudés en aluminium
No full textApplication industrielle d’une nouvelle méthode de déformation locale pour une évaluation de la résistance à fatigue de structures soudées
No full textEvaluation of fatigue strength of aluminium alloy welded joints by WEL.FA.RE method: the case of thin main plate thickness
No full textMechanical characterization of polyethylene panel sandwich obtained by rotational molding
No full textLa résistence à la fatigue des structures soudées: application d’une Methode Locale de Déformation (WEL.FA.RE.) sur des joints soudés en aluminium
No full textIndustrial application of a new local strain method for fatigue strength evaluation of welded structures
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