Scaling effects in the compression behavior of sandwich structures with corrugated composite cores
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2016, European Conference on Composite Materials, ECCM. All rights reserved. This project considers the mechanical properties of sandwich structures manufactured using glass fibre/epoxy and carbon fibre/epoxy curvilinear cores. The sandwich samples were produced by wrapping composite prepreg plies around Teflon-coated metal cylinders. Composite skins were then attached to the cylinders and the resulting structures were cured in a hot press. This procedure resulted in a strong bond across the skin-core interface. The resulting compression behaviour of the sandwich structures was modeled using finite element techniques. The failure mechanisms during testing are elucidated and compared with those predicted by the FE models. The latter part of this investigation focuses on studying scaling effects in the response of both types of sandwich structure. Here, the geometry of the sandwich panels and the associated testing conditions, were adjusted appropriately to satisfy scaling laws. Following these tests, variations in compression strength and changes in failure mode are discussed.
ECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
author list (cited authors)
Zhou, J., Guan, Z., Umer, R., Balawi, S., & Cantwell, W. J.