NDLI: A novel method for fatigue assessment of steel plates with thermally cut edges

Content Provider	Springer Nature Link
Author	Peippo, J. Nykänen, T. Björk, T.
Copyright Year	2017
Abstract	The fatigue strength of thermally cut edges shares many similar features with the fatigue strength of a welded joint. Current design standards are valid for geometrically simple, straight, flame-cut edges made of mild steel. However, the applicability of current recommendations is questionable if the geometry is more complicated, if a different (thermal) cutting process is employed, or if any high-strength steel is used. In this study, conventional fatigue analysis methods are applied in order to explain the experimental results obtained by conducting fatigue tests on a cut component made of different steel grades. Since those methods did not explain the experimental results properly, a novel fatigue analysis method for plates with a thermally cut edge was created. This method is a parallel approach to that recently developed at Lappeenranta University of Technology for analyzing fatigue of a welded joint. In addition to the general stress range, this method also takes into account the structural and local geometry of the cut detail, surface roughness, residual stresses due to the cutting process, the external stress ratio, and the effect of the steel grade. The method agreed well with the test results and can be recommended as a new general approach for analyzing the fatigue of cut edges.
Starting Page	105
Ending Page	115
Page Count	11
File Format	PDF
ISSN	00432288
Journal	Welding in the World
Volume Number	62
Issue Number	1
e-ISSN	18786669
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-12-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Steel grades Design methods Fatigue strength Cut edges Fatigue parameters Surface roughness Metallic Materials Theoretical and Applied Mechanics Continuum Mechanics and Mechanics of Materials Residual stress
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Metals and Alloys Mechanical Engineering

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