Interlaminar Strength Analysis of Bonded Carbon Fiber Rods

Interlaminar failure of bonded composite structures is quite often. Nowadays there a lot lightweight high reliability carbon or glass fiber (CFRP GFRP) reinforced polymer constructions with rods. In order to better understand the delamination processes rods, analytical equations were analyzed. Later, mode I interlaminar experiments CFRP rods 3x3 mm performed and fracture toughness GIC = 135 J/m2 was found. According analytic equations, experiment values, given literature, finite element model (FEM) created in software LS-Dyna. Most differences between experimental simulated force-displacement curves are not higher than 6 % what validates FEM Also, additional methods, such as peridynamics bond area Offered approach very useful for creation design evaluate GFRP constructions.