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Geometrical Influence of a Butt Weld in the Low Cycle Fatigue Regime

Lang, Eliane and Rudolph, Jürgen and Beier, Heinz Thomas and Vormwald, Michael (2013):
Geometrical Influence of a Butt Weld in the Low Cycle Fatigue Regime.
In: Procedia Engineering, pp. 73-78, 66, ISSN 18777058,
[Online-Edition: http://www.sciencedirect.com/science/article/pii/S1877705813...],
[Article]

Abstract

This contribution deals with the low cycle fatigue behaviour of butt-welded joints of austenitic stainless steel (Type 347). The influence of the geometrical notch of a butt weld on the fatigue life in LCF regime is of particular interest in this context. For the purpose of comparison different weld geometries – as-welded and machined – are investigated. Fatigue tests reveal that the weld notch does not always constitute the failure location in the LCF regime. Accompanying numerical simulations are based on 3D scans with a resolution of 30 Pm in order to receive accurate local strain amplitudes at the weld notch or rather the failure location. The combination of experiments and numerical simulations results in local strain life curves.

Item Type: Article
Erschienen: 2013
Creators: Lang, Eliane and Rudolph, Jürgen and Beier, Heinz Thomas and Vormwald, Michael
Title: Geometrical Influence of a Butt Weld in the Low Cycle Fatigue Regime
Language: English
Abstract:

This contribution deals with the low cycle fatigue behaviour of butt-welded joints of austenitic stainless steel (Type 347). The influence of the geometrical notch of a butt weld on the fatigue life in LCF regime is of particular interest in this context. For the purpose of comparison different weld geometries – as-welded and machined – are investigated. Fatigue tests reveal that the weld notch does not always constitute the failure location in the LCF regime. Accompanying numerical simulations are based on 3D scans with a resolution of 30 Pm in order to receive accurate local strain amplitudes at the weld notch or rather the failure location. The combination of experiments and numerical simulations results in local strain life curves.

Journal or Publication Title: Procedia Engineering
Volume: 66
Divisions: 13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics > Fachgebiet Werkstoffmechanik
13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics
13 Department of Civil and Environmental Engineering Sciences
Date Deposited: 26 Jun 2014 11:22
Official URL: http://www.sciencedirect.com/science/article/pii/S1877705813...
Alternative keywords:
Alternative keywordsLanguage
geometrical influence, butt weld, low cycle fatigue, high resolution 3D scans English
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