Table 2.

Biaxial testing of human aortic adventitia. Samples are stretched biaxially in the circumferential and axial directions at ${\lambda }_{\text{cir}}$ and ${\lambda }_{\mathrm{axl}}$ at five different stretch ratios. The mean fiber angle is $\pm 66.{78}^{\circ }$ against the circumferential direction. Stresses are reported as ${\sigma }_{\text{cir}}$ and ${\sigma }_{\text{axl}}$, see Fig. 1 [24, 40]