Abstract
Three approaches to bond strength analysis are discussed in this article: those based upon linear elastic stresses, those based upon linear fracture mechanics parameters, and those based upon nonlinear analyses. The first two approaches are then discussed with respect to standard adhesion test methods. The stresses in linear lap shear test specimens are shown analytically and experimentally to be concentrated at the bond termination and to be strongly dependent upon adherend thickness for standard tests. The bond stress intensity factors and energy release rates near the bond termination are given and discussed. Adherend thickness should be at least 4 times larger than that recommended by standard test techniques. The stresses in butt tensile tests are also discussed. It is shown that test specimen alignment problems can lead to low debond forces and excessively large data scatter. Stress intensity factors are also determined for butt tensile tests.
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© 1984 Plenum Press, New York
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Anderson, G.P., DeVries, K.L., Sharon, G. (1984). Evaluation of Adhesive Test Methods. In: Mittal, K.L. (eds) Adhesive Joints. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2749-3_18
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DOI: https://doi.org/10.1007/978-1-4613-2749-3_18
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