Schmitt, W.W.SchmittGeißler, A.A.Geißler2022-03-082022-03-081990https://publica.fraunhofer.de/handle/publica/317630Foams belong to the most important class of packaging materials. They are part of a special group of heterogeneous materials that demonstrate nonlinear viscoelastic behaviour. When used as cushioning materials, their damping behaviour is a function of the static load. Microscopic investigations reveal that these nonlinearities observed on the macro scale are an attribute of special deformation processes of micromechanical dimensions.enclosed-cell foamdeformative processloadingmicromechanic strainpackaging materialplasticscanning electron microscopytime-accelerated test660conference paper