Short-Term Stable Crack Propagation through Polyolefin Single-and Bilayered Structures - Influence of Welding,Composition and Direction of Crack Propagation

摘要

The overall stable crack initiation and propagation behaviour of specimens cut from plastic pipes that were composed of different polyolefin materials were investigated using concepts of elastic-plastic fracture mechanics including the crack propagation kinetics. The effect of specimen shape, orientation, welding, lading rate, composition/microstructure and direction of crack propagation on the crack resistance (R) behaviour of these materials has been thereby assessed.