Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Temperature influence on black & white joints characteristics
Year:2009
Research Areas
  • Mechanical engineering,
  • Construction materials
Information
Abstract
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.
International
Si
Congress
62nd Annual Assembly and International Conference of International Institute of Welding
960
Place
Singapore
Reviewers
Si
ISBN/ISSN
0000000000000
Start Date
16/07/2009
End Date
17/07/2009
From page
1
To page
13
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.
Participants
  • Participante: E. SCUTELNICU (Robotics and Welding Department, Dunarea de Jos University of Galati, Rumania)
  • Autor: Danut Iordachescu . (UPM)
  • Autor: Mihaela Iordachescu (UPM)
  • Autor: Manuel Blasco Litago (UPM)
  • Autor: Jose Luis Ocaña Moreno (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería y Aplicaciones del Láser
  • Centro o Instituto I+D+i: Centro Laser
  • Grupo de Investigación: Materiales Estructurales Avanzados y Nanomateriales
  • Departamento: Ciencia de los Materiales
  • Departamento: Física Aplicada a la Ingeniería Industrial
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