Influence of Root Rotation on Delamination Fracture Toughness of Composites

Figure 9

Comparison of experimental [21] and fracture analysis results of the critical load and the corresponding displacement with the crack length of unidirectional DCB specimens made of graphite/epoxy composites ( = 20 mm, 2 = 3.25 mm, = 130 GPa, = 238 Nm, and = 713 J/m²).