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PostprintThis is the accepted version of a paper published in Composites Science And Technology. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. AbstractA closed cell foam of Polymetacrylimide (Rohacell) with three different densities is studied.The foam is tested quasistatically in tension, compression and shear. The tensile properties scale very well with the relative density of the foam, but the compression and shear properties do not scale the same way. It is believed to be due to cell edge and cell wall buckling being the dominated deformation mechanism in compression and shear for lower densities that does not occur for higher densities. Fatigue testing is then performed in tension, compression and shear. It is seen that for all load cases and densities, the fatigue life can be plotted using Basquin's law. The results also show that the different failure mechanisms found in the static tests are the same in fatigue. This means that the fatigue life for different load types exhibit different failure mechanisms. This shows not only as a clear difference in the stress levels for fatigue failure, but also on the slope in the fatigue life relation.

This is the accepted version of a paper published in Journal of Sandwich Structures and Materials. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination.

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