Fatigue Failures of Spot Friction Welds in Aluminum 6111-T4 Sheets Under Cyclic Loading Conditions

2006-01-1207

04/03/2006

Event
SAE 2006 World Congress & Exhibition
Authors Abstract
Content
Fatigue failures of spot friction welds in lap-shear specimens of aluminum 6111-T4 sheets under cyclic loading conditions are investigated in this paper. The paths of fatigue cracks near the spot friction welds are first discussed. A fatigue crack growth model based on the Paris law for crack propagation and the global and local stress intensity factors for kinked cracks is then adopted to predict the fatigue lives of these spot friction welds. The global stress intensity factors and the local stress intensity factors based on the recent published works for resistance spot welds in lap-shear specimens are used to estimate the local stress intensity factors for kinked cracks with experimentally determined kink angles. The results indicate that the fatigue life predictions based on the Paris law and the local stress intensity factors as functions of the kink length agree well with the experimental results.
Meta TagsDetails
DOI
https://doi.org/10.4271/2006-01-1207
Pages
9
Citation
Lin, P., Pan, J., and Pan, T., "Fatigue Failures of Spot Friction Welds in Aluminum 6111-T4 Sheets Under Cyclic Loading Conditions," SAE Technical Paper 2006-01-1207, 2006, https://doi.org/10.4271/2006-01-1207.
Additional Details
Publisher
Published
Apr 3, 2006
Product Code
2006-01-1207
Content Type
Technical Paper
Language
English