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Descripción
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| The paper briefly presents the main elements of complementary investigations addressing temperature influence on producing Black and White Joints (BWJ) of thin sheets, which are of increasing interest for industry due to costs saving and satisfactory service performance. First, thermal field modelling was approached by considering Goldak¿s double ellipsoidal heat source, together with a contribution of the authors related to the shape coefficients. In case of thin sheets, the source influence in the thickness direction was neglected, a 2D FEMbased model for predicting the heat flow in case of arc welding of low carbon steel (CS) and stainless steel (SS) thin sheets was developed. In parallel, a second experimental investigating direction has addressed the technological development of BWJ arc welding, and laser hybrid welding, respectively. Third, various investigating methods were used on the achieved BWJ. Detailed macro and microstructural examination and hardness tests are also discussed for in deep understanding the processing temperature influence. Tensile, fatigue (crack initiation and crack propagation, also by using digital image correlation) and corrosion under stress tests were performed on the BWJ laser hybrid welded, allowing relevant discussion and conclusions about the influence of the welding parameters on the joint properties. The investigations are ongoing for laser hybrid welding by developing a 3D FEM model, on one hand, and defining parametrical operational windows, on the other; further reports are expected. | |
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Internacional
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Si |
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Nombre congreso
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62nd Annual Assembly and International Conference of International Institute of Welding |
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Tipo de participación
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960 |
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Lugar del congreso
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Singapore |
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Revisores
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Si |
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ISBN o ISSN
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0000000000000 |
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DOI
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Fecha inicio congreso
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16/07/2009 |
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Fecha fin congreso
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17/07/2009 |
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Desde la página
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1 |
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Hasta la página
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13 |
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Título de las actas
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IIW Doc. IIW-2012-09-Z Welding in The World, publicación del Instituto Internacional de Soldadura (IIW) desde 1963, referencia mundial en el campo de la soldadura y unión y cuyos trabajos de investigación se someten a un procedimiento de revisión. |