A failure criterion to predict the onset of matrix cracking induced delamination in general composite laminates

In this study, a failure criterion based on energy is developed to predict the onset and growth of matrix cracking induced delamination, known as MCID. This criterion is formulated upon the concept of fracture mechanics by comparison of energy release rate and interface fracture toughness. At first, an effective stiffness model (ESM) is proposed to calculate the equivalent stiffness of a cracked ply. This failure criterion is developed as a...