Energy Release Rates for the Peeling of Flexible Membranes and the Analysis of Blister Tests |
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Authors: | JG Williams |
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Affiliation: | (1) Mechanical Engineering Department, Imperial College of Science, Technology and Medicine, London, SW7 2BX |
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Abstract: | Solutions are given for the debonding of a strip by extending the usual peel test analysis. Exact solutions are obtained for
concentrated loads and for uniform pressure. Consideration is also given to energy based solutions and to the effect of residual
strains. The axisymmetric case is then analysed in detail and the exact series solution compared with the constant stress
assumption. It is observed that only slight errors arise in using the latter and a general scheme is developed for deriving
expressions for G based on this assumptions. Solutions for concentrated forces, island blisters and constrained blisters are
derived. The effects of large displacements and of plastic yielding are also described. It is observed that solutions for
G in the form of energy divided by area created are very useful in that the parameters relating this ratio to G are reasonably
insensitive, thus rendering experiments simple.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | Peeling membranes blister tests residual strains |
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