Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/8150
Title: Consideration of mean-stress effects on fatigue life of welded magnesium joints by the application of the Smith-Watson-Topper and reference radius concepts
Authors: Karakaş, Özler
Keywords: Damage parameter
Fatigue
Magnesium alloy
Reference radius concept
Welded joints
Axial loading
Fatigue strength
Maximum stress
Notch radii
R value
Scatter band
Smith-watson-topper
Strain values
Stress levels
Stress ratio
Weld geometry
Fatigue of materials
Magnesium
Magnesium alloys
Welds
Welding
Abstract: Three types of welded joints have been assessed with regard to their fatigue strength based on the mean-stress damage parameter model according to Smith, Watson, and Topper (PSWT) and on the reference notch radius concept. These analyses were performed with three different stress ratios, R = -1, R = 0 and R = 0.5, under axial loading. For each stress level, the corresponding Neuber-Hyperbolas, Masing-loops and their maximum stress and maximum strain values were determined in order to calculate damage parameter (PSWT) values. For a given weld geometry, this damage parameter is able to unify the fatigue results for different R-values within at a tight scatter band and therefore to consider the mean-stress effect. The unification of the results for different weld geometries is performed by applying the reference radii rref = 0.05 and rref = 1.00 mm as suggested by the IIW-Recommendations. © 2012 Elsevier Ltd. All rights reserved.
URI: https://hdl.handle.net/11499/8150
https://doi.org/10.1016/j.ijfatigue.2012.11.007
ISSN: 0142-1123
Appears in Collections:Mühendislik Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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