Prediction of brittle fracture of epoxy-aluminum flanging

Jakub Korbel, Lars Schmidt, Bandeep Singh, Nikolaus Zant, Jan Klusák, Zdeněk Knésl


This paper presents a fracture mechanical approach for estimation of critical bending load of different types of aluminum-epoxy flanging and comparison with experimental measurements. For this purpose, several designs of the flanges were investigated. The flanges were glued to the epoxy bars and adhesive-epoxy interface was considered as a bi-material notch. Prediction of the failure is based on generalized stress intensity factor and generalized fracture toughness.


generalized stress intensity factor; flanging; FEM; bi-material interface; fracture mechanics

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