Abstract
We present a new unknown effect that is responsible for the stable breakage of detachment folds or Schallamach wavesl occurring in the contact area between a moving solid and the smooth and flat surface of a soft elastomer sample. A direct dependence between the existence of detachment folds and the rubber sample thickness has been discovered experimentally. Our investigations show that Schallamach waves can be considered as a test indicator for the study of skin friction in rubber-like materials. Finally, some industrial applications relating to the observed effect are discussed: the reliability of joints used for air- or water-tightness, for example.
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