Peeling Tests of the Human Aortas under the Different Conditions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00386041" target="_blank" >RIV/68407700:21220/25:00386041 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Peeling Tests of the Human Aortas under the Different Conditions
Original language description
Aortic dissection is one of the life-threatening diseases. It is manifested as a delamination process of the arterial layers. The delamination strength is investigated with the help of the peeling experiments, which resemble the mode I crack opening well-known from the fracture mechanics. These experiments were designed to take into account possible effects of material anisotropy and site-specific differences in the mechanical properties that occur along the aortic length. The computational branch of our study is based on the FEM/XFEM model of the peeling experiment built in Abaqus and attempts to find location-dependent parameters of the traction-separation law that would reflect age-related changes in the delamination resistance. The results showed that the delamination strength strongly depends on the age of the donor. It was also found that the delamination properties of the aortic wall differ significantly with respect to the crack tip orientation. It suggests that anisotropy is not only a bulk property, but also a phenomenon, which plays a role in a discontinuity propagation. In contrast to the aortic aneurysm thrombus delamination properties, our results suggest that the delamination properties of the aortic wall itself are not rate-dependent. 2022 EAN. All rights reserved.
Czech name
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Czech description
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Project
<a href="/en/project/GA20-11186S" target="_blank" >GA20-11186S: Mechanics of arterial delamination and crack propagation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 60th Annual Conference on Experimental Stress Analysis
ISBN
978-80-01-07400-8
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
286-289
Publisher name
ČVUT v Praze, Fakulta strojní, Ústav mechaniky, biomechaniky a mechatroniky
Place of publication
Praha
Event location
Praha
Event date
Jun 6, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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