Research Article

Generation of R-Curve from 4ENF Specimens: An Experimental Study

Table 6

Mode II delamination toughness from present experiments.

Material (GPa)2 (mm)Initiation toughness (J/m2)Propagation toughness (J/m2)
CC (4)CBT (6)CC (4)CBT (6)

Carbon/epoxy1313.24952 11059101038
Glass/epoxy385.9619052109 18072022

Width, = 20 mm; 2 = 100 mm; = 20 mm; = 60%.