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Notch stress analyses of high-frequency mechanical impact-improved welds by using rho(f) = 1 mm and rho(f) = rho + 1 mm approaches
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Lightweight Structures.
2014 (English)In: Fatigue & Fracture of Engineering Materials & Structures, ISSN 8756-758X, E-ISSN 1460-2695, Vol. 37, no 5, 561-569 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents further assessments of the previously reported round-robin fatigue data obtained from high-frequency mechanical impact (HFMI)-improved longitudinal welds. A detailed statistical analyses of geometry measurements of HFMI-treated weld toe profiles are presented. The fatigue analyses based on notch stress as defined by the International Institute of Welding are performed using the finite element method. Notch stresses are assessed based on both the fictitious weld toe radius and the addition of measured actual notch radius to the fictitious radius. While no large differences are observed between the results of methods, the former one is found to be more practical and faster to implement from the end-user point of view.

Place, publisher, year, edition, pages
2014. Vol. 37, no 5, 561-569 p.
Keyword [en]
effective notch stress, weld toe geometry, weld toe improvement, high-strength steels, high-frequency mechanical impact (HFMI), fatigue strength improvement
National Category
Other Materials Engineering
URN: urn:nbn:se:kth:diva-145572DOI: 10.1111/ffe.12139ISI: 000334317800009ScopusID: 2-s2.0-84898827759OAI: diva2:723862

QC 20140611

Available from: 2014-06-11 Created: 2014-05-23 Last updated: 2014-06-11Bibliographically approved

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Marquis, Gary
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