Compression behaviors of cenosphere–pure aluminum syntactic foams

A new method has been established to predict the compressive strength of cenosphere–aluminum syntactic foams, showing the relation between the relative wall thickness of the cenopshere and the compressive strength of such foams. Quasi-static compression tests indicated that annealed cenosphere–aluminum syntactic foams can deform plastically at a relatively higher stress (∼45–75 MPa) and their energy-absorbing capacity can reach ∼20–35 MJ m−3. The deformation mechanisms of syntactic foams have also been discussed.