... interfacial fracture. The potential-based model is motivated by the fact that the critical interface energy release rate is a function of mode-mixity or phase angle ( θ ) [ 94 ]. Thus, the potential is derived as a function of an effective displacement ( Δ ˜ ) and a phase angle. The effective...

..., for an interfacial crack between two composite layers of different fiber orientations, it is not possible to separate the mixed-mode components from the total strain energy release rate unless a length parameter is introduced. Unfortunately, this length parameter (sometimes called characteristic length or finite...