Fatigue crack growth of butt welded joints subjected to mixed mode loading and overloading

Title

Fatigue crack growth of butt welded joints subjected to mixed mode loading and overloading

 Author

Shakeri, Iman (K.N. Toosi University of Technology)
Shahani, Amir Reza (K.N. Toosi University of Technology)
Rans, C.D. (TU Delft Structural Integrity & Composites) ORCID 0000-0001-5539-1262

 Date

2021

 Abstract

Since welded joints in structures are known to be critical regions for crack initiation and growth, study of fatigue crack growth behavior of welded joints under various loading scenarios are essential. In present study, two groups of experiments were conducted. At first, fatigue crack growth behavior of Al5083 butt welded joint subjected to mixed mode loading with constant amplitude has been studied. Afterwards, fatigue crack growth behavior of butt welded joints subjected to mixed mode single overload has been investigated. The sensitivity of the crack growth retardation behavior to post-welding heat treatments was also studied. Considering the effect of residual stress on fatigue crack growth, a modification to the Wheeler model was proposed to improve the accuracy of retardation prediction after applying a mixed mode overload.


 Subject

Fatigue crack growth
Mixed mode loading
Overload
Residual stress redistribution
Retardation

 To reference this document use:

http://resolver.tudelft.nl/uuid:d52199df-6d57-4b8b-9c99-4faf94181a02

 DOI

https://doi.org/10.1016/j.engfracmech.2020.107376

 Embargo date

2022-12-29

 ISSN

0013-7944

 Source

Engineering Fracture Mechanics, 241

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2021 Iman Shakeri, Amir Reza Shahani, C.D. Rans
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