The present work aims at studying the tensile behaviour of a hot-dip galvanized Z100 steel sheet, coated with a silicone-modified polyester resin. To this purpose, the pre-painted steel sheet was subjected to interrupted tensile tests at different strain levels in order to evaluate the elongation capability of both paint coating and steel sheet. The occurrence of superficial damages on paint coating was detected and the damage evolution before the sample fracture was analyzed. Furthermore, the thinning of each layer of the pre-painted sheet was also evaluated as a function of strain levels. Before the onset of necking, the degree of thinning on the different layers is almost uniform, whilst, once the necking was reached, a noticeable reduction in the thickness of both paint and steel sheet can be observed in the central zone of tensile sample.
Deformation behavior of pre-painted steel sheets / Ciccarelli, D.; Forcellese, A.; Greco, L.; Mancia, T.; Pieralisi, M.; Simoncini, M.; Vita, A.. - 99:(2021), pp. 266-271. (Intervento presentato al convegno 14th CIRP Conference on Intelligent Computation in Manufacturing Engineering, CIRP ICME 2020 tenutosi a ita nel 2020) [10.1016/j.procir.2021.03.039].