Local analyses transparency

The symmetry of the configuration depicted in Figure 4.25 with a circular delamination zone renders the analysis of delamination simple and transparent. If this symmetry is lost, the situation becomes more complex and the delamination zone shapes which can be observed are surprisingly rich in detail. For example, Choi and Kim (1992) introduced a cut into a polyimide film on a glass substrate and observed the resulting growth of a delamination front from the cut. Because the local conditions varied along... 

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