Fig. 6.
Changes in the principal strains in the radial–circumferential plane during pressurization. Upper row: a cumulative first principal strain ε1, b cumulative second principal strain ε2 and c angle of first principal direction |α1|. Lower row: d incremental first principal strain Δε1, e incremental second principal strain Δε2, and f angle of the first principal direction β1 at Pi defined in reference to configuration at Pi−1. Number of mice = 3; number of measured data = 19. Data are shown as mean ± SD