METHODS FOR CRACK LENGTH MEASUREMENT FOR THE DETERMINATION OF FRACTURE MECHANICAL PARAMETERS OF ADDITIVE MANUFACTURED PLASTICS

摘要

This paper contains the investigation of fracture mechanical behavior of additive manufactured plastics. In this context, methods for crack length measurement, based on the current potential drop method, were developed and confirmed. The results show the applicability of the measuring methods and first approaches for the determination of fracture mechanical parameters, e.g. threshold value ΔK_(I,th), fracture toughness ΔK_(IC) and crack propagation curves.