Development of a test method to investigate mode II fracture and dissection of arteries

The current study presents the development and implementation of a bespoke experimental technique to generate characterise mode II crack initiation propagation in arterial tissue. begins with demonstration that lap-shear testing tissue results mixed fracture, rather than II. We perform detailed computational design method (which we refer as shear fracture ring test (SFRT)) robustly repeatably arteries. This is based on generating localised region high adjacent cylindrical loading bar. Placement radial notch this stress predicted result kinking during over long distance circumferential (c)-direction along circumferential-axial (c-a) plane. Fabrication SFRT excised ovine aorta specimens confirms pure propagation. demonstrate strength c-a plane eight times higher corresponding I determined from standard peel test. also calibrate energy our measurement rates. mechanisms uncovered study, quantification properties have significant implications for understanding biomechanical conditions underlying aortic dissection.