A study on the compression property of sandwich composite with porous core

Abstract

Composite material is basically the combination of two or more materials and each of them retains its own distinctive property. Studies on the accurate characteristic are required at structural reliability and data verification by the results of experiments and finite element analysis. The specimens used in this experiment are manufactured with composite materials of aluminum foam core and aluminum honeycomb core sandwich. Experimental results about the properties of composite materials are compared with finite element analysis results. Test results show that buckling is occurred at the aluminum foam core and honeycomb core according to the increase of load. At in-plane compression test, the maximum load of aluminum foam specimen is similar with that of honeycomb sandwich. The property of honeycomb is better than that of the foam in consideration of specific gravity. At out-plane compression test, the compression maximum load of aluminum honeycomb sandwich composite is higher than that of aluminum foam sandwich composite. Simulation analysis result obtains the similar behavior with experimental result.