Influence of manufacturing conditions on the cracking susceptibility of AHSS during resistance spot welding
- The influence of two different weld imperfections (gap/crack) on the fatigue behaviour of spot welded joints was tested
Surface cracks have no influence on the fatigue life
Samples with cracks in the electrode indentation /HAZ where tested
Stiffness curves are not significantly influenced by surface cracks
3D FE-Simulation demonstrate no changes of stress due to surface imperfections
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Welding under external forces was found suitable for characterizing AHSS materials
New quick and easy-to-perform procedure for establishing a material ranking regarding cracking susceptibility