A theoretical and numerical study of thin film delamination using the pull-off test |
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| Affiliation: | 1. Department of Mathematics and Statistics, College of Science, Al-Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11566, Saudi Arabia;2. Department of Mathematics, Faculty of Science, Benha University, Benha, Egypt;3. Department of Mathematics, Faculty of Science, Cairo University, Giza, Egypt;1. Division of Sensor and Actuator Systems, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden;2. Smart Textiles, Swedish School of Textiles (THS), University of Borås, Borås, Sweden |
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| Abstract: | An accurate closed-form analytical solution for the strain energy release rate for a thin rectangular film loaded by a central line force using the pull-off test is derived in the presence of a tensile residual stress. The theoretical constitutive relation and the strain energy release rate agree very well with two-dimensional nonlinear finite element analysis for the entire deformation regime ranging from bending plate to stretching membrane. Fracture modes for this pull-off test are also investigated based upon the finite element analysis, offering additional insights to the interfacial delamination. |
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