Experimental characterization of the mechanical properties of the abdominal aortic aneurysm wall under uniaxial tension

Kobielarz, M.; Jankowski, L. J.

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Tytuł artykułu

Experimental characterization of the mechanical properties of the abdominal aortic aneurysm wall under uniaxial tension

Autorzy

Kobielarz M. , Jankowski L. J.

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Abstrakty

Although many researchers have made the assumption that the abdominal aortic aneurysym (AAA) wall behaves as an incompressible and isotropic material, the experimental evidence for it is insufficient. Hence, the assumptions about the incompressibility and isotropy of the AAA wall were verified through analysis of stretch ratios of samples excised from the aneurysms walls. The stretch ratios were calculated on the basis of a real-time analysis of geometric dimensions of samples subjected to uniaxial tension. It was proved that the walls of abdominal aortic aneurysms can be modelled as an incompressible and isotropic material. Using histological techniques, the assumption concerning the negligence of shear stress in the analysis of AAA wall stresses was indirectly validated. The results were incorporated into a hyperelastic constitutive equation.

Słowa kluczowe

abdominal aortic aneurysm incompressibility isotropy shear stress

Wydawca

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Czasopismo

Journal of Theoretical and Applied Mechanics

Rocznik

2013

Tom

Vol. 51 nr 4

Strony

949--958

Opis fizyczny

Bibliogr. 55 poz., rys.

Twórcy

autor

Kobielarz M.

magdalena.kobielarz@pwr.wroc.pl

Wroclaw University of Technology, Division of Biomedical Engineering and Experimental Mechanics, Wrocław, Poland

autor

Jankowski L. J.

ludomir.jankowski@pwr.wroc.pl

Wroclaw University of Technology, Division of Biomedical Engineering and Experimental Mechanics, Wrocław, Poland

Bibliografia

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Bibliografia

Identyfikator YADDA

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