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Fatigue life improvement using low transformation temperature weld material with measurement of residual stress
Abstract
Welding processes often produce high levels of tensile residual stress. Low transformation temperature (LTT) welding wires utilise phase transformation strains to overcome the thermal contraction of a cooling weld. In this paper, the residual stress within each weld was quantified using the milling/strain gauge method, being the strain change measured as the weldment was milled away. The fatigue tests were conducted under uniaxial loading considering two types of LTT materials. The results show that the crack propagation of all samples was similar in cycles although both LTT materials extended the crack initiation, and, therefore, the overall life of the part. It was found that both LTT materials reduced the residual tensile stresses, increased the residual compressive stresses, leading to increase in fatigue life about 30%.
Citations
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7
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Web of Science
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Authors (7)
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Jordan Franks
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Greg Wheatley
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Pedram Zamani
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Reza Masoudi Nejad
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Ricardo Branco
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Farzaneh Samadi
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ijfatigue.2022.107137
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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INTERNATIONAL JOURNAL OF FATIGUE
no. 164,
ISSN: 0142-1123 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Franks J., Wheatley G., Zamani P., Masoudi Nejad R., Macek W., Branco R., Samadi F.: Fatigue life improvement using low transformation temperature weld material with measurement of residual stress// INTERNATIONAL JOURNAL OF FATIGUE -Vol. 164, (2022), s.107137-
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.ijfatigue.2022.107137
- Sources of funding:
-
- Free publication
- Verified by:
- Gdańsk University of Technology
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