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This work deals with a laboratory study on the fatigue behaviour of lap joints of light gauge coated steel sheets, produced by techniques newer than the traditional spot welding. The materials chosen for the tests, all 0.8 mm thick, represent typical coated steels for car body production. The joining techniques considered were continuous CO(2) laser welding, weldbonding (a structural epoxy adhesive plus a reduced number of resistance spots) and traditional spot welding. For some materials Nd: yttrium aluminium garnet (YAG) laser welding and/or a different epoxy adhesive were also considered. The fatigue tests were carried out applying an 11 Hz sinusoidal tensile load, with a ratio between the minimum and maximum load values of R = 0.1. The specimens that passed 2E6 cycles without failure were conventionally considered not broken.

Additional information

Authors: RUSTIA V, Centro sviluppo materiali SpA, Roma (IT);DI NUNZIO P, Centro sviluppo materiali SpA, Roma (IT)
Bibliographic Reference: EUR 16631 IT (1997) 68pp., FS, ECU 11.50
Availability: Available from the (2)
ISBN: ISBN 92-828-0085-7
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