On the application of Normalization method to infer J-R curves of semicrystalline ductile polymers

L. A. FASCE; F. RUEDA; P.M. FRONTINI

Rosario

Congreso; 11º Congreso Binacional de Metalurgia y Materiales, SAM CONAMET 2011; 2011

In this work, the Load Separation Principle and the deformation function were expressed in terms of total displacement without distinguishing between elastic and plastic displacement components. Hence, calculations were made using the J-Integral formula based on total energy. In contrast to ASTM method, This leads to a non-iterative procedure for crack extension estimation. The performance of proposed method was evaluated and compared with the standard Multiple-specimen technique for three semicrystalline ductile polymers. Several features of the approach like suitability of functional forms, influence of blunting assumption and method limitations were analyzed.