Multiaxial fatigue assessment of friction stir welded tubular joints of Al 6082-T6
Source abstract
Abstract
The present paper addresses the problem of designing aluminium friction stir (FS) welded\ud joints against multiaxial fatigue. After developing a bespoke FS welding technology\ud suitable for joining aluminium tubes, some one hundred welded tubular specimens of Al\ud 6082-T6 were tested under pure axial, pure torsional and biaxial tension-torsion loading.\ud The influence was explored of two independent variables, namely the proportional or nonproportional\ud nature of the biaxial loading and the effect of axial and torsional non-zero\ud mean stresses. The experimental results were re-analysed using the Modified Wöhler\ud Curve Method (MWCM), with this bi-parametrical critical plane approach being applied in\ud terms of nominal stresses, notch stresses, and also the Point Method. The validation\ud exercise carried out using these experimental data demonstrated that the MWCM is\ud applicable to prediction of the fatigue lives for these FS welded joints, with its use resulting\ud in life estimates that fall within the uniaxial and torsional calibration scatter bands. The\ud approach proposed in the present paper offers, for the first time, a complete solution to the\ud problem of designing tubular FS welded joints against multiaxial fatigue loading. \ud
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Metal Forming Simulation Techniques · Fatigue and fracture mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (75)
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