Fig. 3.

(A) Response of unnotched specimens with various helical fiber orientations for 5 vol.% and 10 vol.%. (B) Response of notched specimens with various idealized fiber orientations ($\phi$) for 5 vol.% and 10 vol.%. (C and D) Stiffness (C) and toughness (D) as a function of volume fraction and idealized fiber orientation ($\phi$).