Change search
ReferencesLink to record
Permanent link

Direct link
Influence of defects on fatigue crack propagation in laser hybrid welded eccentric fillet joint
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.ORCID iD: 0000-0003-4180-4710
Show others and affiliations
2011 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 78, no 10, 2246-2258 p.Article in journal (Refereed) Published
Abstract [en]

Fatigue cracking of laser hybrid welded eccentric fillet joints has been studied for stainless steel. Two-dimensional linear elastic fracture mechanics analysis was carried out for this joint geometry for four point bending load. The numerical simulations explain for the experimental observations why the crack propagates from the lower weld toe and why the crack gradually bends towards the root. Lack of fusion turned out to be uncritical for the initiation of cracks due to its compressive stress conditions. The linear elastic fracture mechanics analysis has demonstrated in good qualitative agreement with fatigue test results that lack of fusion slightly (<10%) reduces the fatigue life by accelerating the crack propagation. For the geometrical conditions studied here improved understanding of the crack propagation was obtained and in turn illustrated. The elaborated design curves turned out to be above the standard recommendations.

Place, publisher, year, edition, pages
2011. Vol. 78, no 10, 2246-2258 p.
Keyword [en]
Crack, Fatigue; Weld, Linear elastic fracture mechanics, Lack of fusion
National Category
Vehicle Engineering
URN: urn:nbn:se:kth:diva-36886DOI: 10.1016/j.engfracmech.2011.04.011ISI: 000292410500011ScopusID: 2-s2.0-79957630873OAI: diva2:431504
QC 20110720Available from: 2011-07-20 Created: 2011-07-18 Last updated: 2011-07-20Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Barsoum, Zuheir
By organisation
Lightweight Structures
In the same journal
Engineering Fracture Mechanics
Vehicle Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 89 hits
ReferencesLink to record
Permanent link

Direct link