Analysis Of Low Temperature Impact Fracture Data Of Thermoplastic

V PETTARÍN; R SELTZER; P FRONTINI; K LESKOVICS; T CZIGANY

Brisbane, Australia

Congreso; International Conference on Structural Integrity and Fracture SIF 2004, (26-29)/11/04,; 2004

In this work room and lowtemperatureimpactfracturedata toughness of rubber modified polypropylene, polyethylene and rubber toughened polymethylmetacrylate have been assessed. In order to minimize the well-known dynamic effects a previously developed inverse methodology was used to treat force?time traces. Fracture parameters, such as KIQ and JC were estimated and the benefits of the inverse methodology were evaluated. The suitableness of energetic and force based toughness parameters for estimating a brittle to ductile transition was evaluated. The employment of the inverse methodology allowed us to infer the values of the crack tip loading rate, dK/dt, without the need of cushioning