Abstract
The present paper investigates the accuracy of the Modified Wöhler Curve Method (MWCM) in estimating multiaxial fatigue strength of aluminium friction stir (FS) welded joints. Having developed a bespoke joining technology, circumferentially FS welded tubular specimens of Al 6082-T6 were tested under proportional and non-proportional tension and torsion, the effect of non-zero mean stresses being also investigated. The validation exercise carried out using the experimental results have demonstrated that the MWCM applied in terms of nominal stresses, notch stresses, and also the Point Method is accurate in predicting the fatigue lifetime of the tested FS welded joints, with its use resulting in life estimates that fall within the uniaxial and torsional calibration scatter bands.
DOI
10.3221/igf-esis.37.27
Publication Date
2016-06-13
Publication Title
Frattura ed Integrità Strutturale
Volume
10
Issue
37
Organisational Unit
School of Engineering, Computing and Mathematics
First Page
207
Last Page
214
Recommended Citation
Susmel, L., Hattingh, D., James, M., Maggiolini, E., & Tovo, R. (2016) 'Designing aluminium friction stir welded joints against multiaxial fatigue', Frattura ed Integrità Strutturale, 10(37), pp. 207-214. Available at: https://doi.org/10.3221/igf-esis.37.27
