# Elastic–plastic analysis of the peel test for ductile thin film presenting a saturation of the yield stress

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## Abstract

The paper investigates the peel test of an elastic–plastic film on an elastic substrate. The case of a film material presenting a saturation of the yield stress is considered. Based on earlier approaches of the literature, see for instance Kim and Aravas (Int J Solids Struct 24:417–435, 1988), a semi-analytical expression for the work done by bending plasticity is proposed. The validity of the present expression is established based on finite element calculations. It is shown that for the interpretation of the results of peel test at 90\(^{\circ }\) when the peel force and the curvature are measured, the present approach can provide a precise value of the interface fracture energy.

## Keywords

Peel test Work done by bending plasticity Analytical expression Voce law Interface fracture energy Peel strength## Notes

### Acknowledgements

The authors acknowledge the support of Agence Nationale de Recherche through the program Labcom LEMCI ANR-14-LAB7-0003-01. The research leading to these results has received funding from the European Union’s Horizon 2020 research and innovation programme (Excellent Science, Marie Sklodowska-Curie Actions) under REA Grant Agreement 675602 (OUTCOME project).

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