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Welding mechanics for advanced component safety assessment

: Siegele, D.

Preprint urn:nbn:de:0011-n-1725346 (743 KByte PDF)
MD5 Fingerprint: fa9066e1be100eb95074a81b855265d3
The original publication is available at
Erstellt am: 16.10.2012

Frontiers of materials science 5 (2011), Nr.2, S.224-235
ISSN: 2095-025X
ISSN: 2095-0268
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IWM ()
welding simulation; residual stress; defect assessment; fracture mechanics

Numerical methods are nowadays a useful tool for the calculation of distortion and residual stresses as a result from the welding process. Modern finite element codes not only allow for calculation of deformations and stresses due to the welding process but also take into account the change of microstructure due to different heating and cooling rates. As an extension to the pure welding simulation, the field of welding mechanics combines the mechanics and the material behaviour from the welding process with the assessment of service behaviour of welded components. In the paper, new results of experimental and numerical work in the field of welding mechanics are described. Through examples from automotive, nuclear and pipe-line applications it is demonstrated that an equilibrated treatment and a close interaction of "process", "properties" and "defects"are necessary to come up with an advanced fitness-forservice assessment of welded components.