The main objective of this book is to provide to mechanical scientists and engineers the kinetic modeling tools necessary for predicting the damage state of organic composite matrices submitted to hydrolytic and oxidative ageing. These tools are derived from the degradation mechanisms and their validity is successfully checked from many experimental data. They can be interfaced with existing or under development computer codes for predicting the lifetime of composite structures. Particular attention is paid to the relationships between damage state and use properties in view of defining...