release rate, GIC, at the fracture initiation. In the experiment, the load-deflection curves are measured as shown in Figure 10. The fracture toughness, KIC, is then calculated by using linear elastic fracture mechanics:39
release rate, GIC, at the fracture initiation. In the experiment,the load-deflection curves are measured as shownin Figure 10. The fracture toughness, KIC, is then calculatedby using linear elastic fracture mechanics:39