Figure 6: Effect of the layered composite architecture (level III) on the fang’s macroscopic stiffness (level IV).
From: Multiscale structural gradients enhance the biomechanical functionality of the spider fang

(a) Fang wall structure as a function of increasing β and ω. (b,c) Effect of variations in β and ω on the penetration stiffness (K1) and the perpendicular stiffness (K3). The results are normalized by the maximal stiffness values.