Qualification of an intrinsic hybrid laminate for cyclically stressed componentsThursday (09.11.2017) 11:55 - 12:15 Part of:
An intrinsic hybrid laminate, made up by a glass fiber reinforced plastic (GFRP) and a high strength steel, is characterized for a cyclically stressed component for an automotive application. This investigation sets the focus on the interface between GFRP and steel. Double cantilever beam tests (mode I) and shear tests (mode II) are conducted in order to measure the energy release rate and the shear strength of the considered interface. A variety of surface treatments of steel layer has been characterized by this approach. The results show up that good adhesion can be achieved by silane and titanium dioxide primers, however, the variation within the data is significantly higher than for other surface treatments variants. Furthermore, the increase of the energy release rate by fiber bridging effects is considered as well and an approach for its quantitative description by a power law is presented.
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