Karakaş, Ö., Baumgartner, J. and Susmel, L. orcid.org/0000-0001-7753-9176 (2020) On the use of a fictitious notch radius equal to 0.3 mm to design against fatigue welded joints made of wrought magnesium alloy AZ31. International Journal of Fatigue, 139. 105747. ISSN 0142-1123
Abstract
In the present investigation, a large number of fatigue data generated by testing welded joints of magnesium alloy AZ31 were post-processed based on the reference radius concept. The local stresses used to perform this systematic re-analysis were determined by setting the fictitious notch radius, r ,f invariably equal to 0.3 mm. According to this strategy, local stress-based S-N curves were then derived for load ratios, R, equal to −1, 0 and to 0.5. This post-processing exercise allowed us to demonstrate that a fictitious notch radius of 0.3 mm is successful in modelling the fatigue strength of weldments made of magnesium alloy AZ31. In particular, with rf = 0.3 mm, this type of welded joints is recommended to be designed against fatigue by using an S-N curve
having endurable local stress range, ΔσFAT, at N = × 2 106 cycles to failure equal to 40 MPa and a negative inverse slope, k, equal to 3.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Elsevier Ltd. This is an author produced version of a paper subsequently published in International Journal of Fatigue. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Welded joints; Magnesium alloy; Local stress; Fictitious radius; Fatigue design |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 05 Jun 2020 12:38 |
Last Modified: | 01 Jun 2021 00:38 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.ijfatigue.2020.105747 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:161411 |
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