Abstract
Most thin films, as paints, varnishes and coatings, have the drawback of flaking and peeling off when the substrate is deformed. A crack, initiated from a surface flaw, propagates at the interface and causes a partial rupture of facing. In order to better understand this behaviour, Kendall1, in 1975, has investigated the problem of the failure of lap shear joints using an energy balance concept theory based on optimizing the total energy of the system at the equilibrium. The equilibrium state is reached if the first derivative of the total energy, with respect to the contact area, is cancelled, and the corresponding force is called elastic adherence force. So, one can deduce that a lap shear joint cannot sustain a prestress greater than its normal adherence force.
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References
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© 1984 Elsevier Applied Science Publishers Ltd
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Barquins, M. (1984). Spontaneous Shear Delamination of Adhesive Joints. In: Allen, K.W. (eds) Adhesion 9. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4938-6_12
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DOI: https://doi.org/10.1007/978-94-009-4938-6_12
Publisher Name: Springer, Dordrecht
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