Influence of fabrication stresses on fatigue life of friction stir welded aluminium profiles
2012 (English)In: Journal of Materials Processing Technology, ISSN 0924-0136, Vol. 212, no 7, 1488-1494 p.Article in journal (Refereed) Published
Influence of clamping and welding procedure on fatiguelife of a frictionstir (FS) weldedaluminiumprofile has been analysed. Two series of aluminiumprofiles (series A and B) have been fatigue tested. The different clamping conditions in series A and B gave rise to different failure positions that could not be explained neither by the effective notch stress method, nor by the critical distance methods. The clamping in series A introduced plastic deformation at the weld notch that gave rise to tensile residual stresses. The failure position could be explained from the value of the stress intensity factor provided that the residual stresses were considered.
Place, publisher, year, edition, pages
2012. Vol. 212, no 7, 1488-1494 p.
Friction stir welding, Clamping loads, Residual stresses, Stress ratio, Fatigue failure
IdentifiersURN: urn:nbn:se:kth:diva-92217DOI: 10.1016/j.jmatprotec.2012.02.008ISI: 000304020800005ScopusID: 2-s2.0-84858304916OAI: oai:DiVA.org:kth-92217DiVA: diva2:512798
QC 201203292012-03-292012-03-292012-06-07Bibliographically approved