Figure 7
From: Novel biaxial tensile test for studying aortic failure phenomena at a microscopic level
Effects of compression ratio and radial position on the crack initiation area. Successful crack initiation at the area inside the hollow cylinder for specimens obtained in all regions (a) and the change in crack initiation area with radial position for specimens compressed by 40% before freezing (b). For each position, 14–15 slices were obtained from four PTA blocks and tested.