Characterisation of failure in human aortic tissue using digital image correlation

Jin Kim (1, 2, 3, 4) , Pierre Badel (1, 2, 3, 4) , Ambroise Duprey (1, 2, 3, 4, 5) , Jean-Pierre Favre (5) , Stéphane Avril (1, 2, 3, 4)

1 DB2M-ENSMSE - Département Biomécanique et Biomatériaux
2 LCG-ENSMSE - UMR 5146 - Laboratoire Claude Goux
3 CIS-ENSMSE - Centre Ingénierie et Santé
4 IFRESIS - Institut Fédératif de Recherche en Sciences et Ingénierie de la Santé
5 Service de Chirurgie Digestive, Cancérologique, Générale, Endocrinienne et Urgences (CHU de Dijon)

An aortic aneurism is a localized dilation of the aorta in a weakened area [1, 2]. The increase of aneurism size may result in rupture, which will be a life threatening emergency. The mechanism of failure in aneurysms is now relatively well understood. However, only limited research has provided quantitative values for the stresses that cause the failure of pathologic arterial tissue. The evaluation of the local failure stress remains an open problem. In this study we apply digital image correlation (DIC) to excised pieces of tissue that we test in a bulge inflation test. The tissue is taken from the ascending aorta in diseased patients requiring an excision for removing an aneurysm. All procedures are carried out in accordance with the guidelines of the Institutional Review Board of the University Hospital of Saint-Etienne, France.

Mots clés: arterial tissue; aneurysm; virtual fields method; digital image correlation

Domaines: Matériaux; Biomécanique [physics.med-ph]; Biomécanique [physics.med-ph]

Jin Kim, Pierre Badel, Ambroise Duprey, Jean-Pierre Favre, Stéphane Avril. Characterisation of failure in human aortic tissue using digital image correlation. Computer Methods in Biomechanics and Biomedical Engineering, 2011, 14 (Supplément 1), pp.73-74. ⟨10.1080/10255842.2011.592368⟩. ⟨hal-00618607⟩