| Abstract: | Fracture Mechanic Analysis of Toughness Behaviour of Filled Thermoplastics For determination of toughness properties of filled thermoplastics the instrumented Charpy impact test has been used. The interpretation of impact load-deflection curves has been carried out with modern concepts of fracture mechanics. The change of toughness with increasing filler volume can be described for particle filled composites with the help of the J-integral in a suitable mode. The influence of filler volume, filler dimension and matrix type on critical J-integral and COD on the initiation of instable crack growth was tested. With the help of a micromechanical model to describe failure processes taking account of energy dissipative processes it is possible to calculate fracture mechanical behaviour of filled thermoplastics. |
