The Paris law describing slow crack propagation behaviour in several materials is deduced for craze-prone polymers from schematic considerations matching the craze fibril breakdown statistics, first introduced by Yang and co-workers, with the Dugdale-Barenblatt model of the plastic zone at the crack tip. The exponent in the Paris law is shown to be simply equal to 2p,,, where Pw is the Weibull modulus of the fibril breakdown statistics. A promising, if not definitive, agreement between the two parameters is found from literature data for several craze-prone polymers.
Посилання на статтю:
A statistical approach to slow crack propagation in craze-prone polymers / Claudio Maestrini // Polymer. – 1992. – Vol 33. – P. 3076-3079.