Figure 9.

Mechanical effects of varying water content. (a) Stress–strain curves of tensile specimens tested longitudinally, and the arrow indicates the dropping strength with higher water content; (b) ultimate tensile strengths of longitudinal specimens printed with different water contents, the reference value of the unprinted bulk PC is denoted as the pale blue shaded region; (c) stress–strain curves of tensile specimens tested transversely; (d) ultimate tensile strengths and fracture strains of transverse specimens printed with different water contents. The error bars are from standard deviations of data obtained from five measurements. The reference value of the unprinted bulk PC is denoted as the pale blue shaded region.