Viscoelastic characterization of woven Dacron for aortic grafts by using direction-dependent quasi-linear viscoelasticity

Marco Amabili; Prabakaran Balasubramanian; Ivan Breslavsky; Giovanni Ferrari; Eleonora Tubaldi

doi:10.1016/j.jmbbm.2018.03.038

Viscoelastic characterization of woven Dacron for aortic grafts by using direction-dependent quasi-linear viscoelasticity

Marco Amabili, Prabakaran Balasubramanian, Ivan Breslavsky, Giovanni Ferrari, Eleonora Tubaldi

Aerospace and Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

In case of direction-dependent viscoelasticity, a simplified formulation of the three-dimensional quasi-linear viscoelasticity has been obtained manipulating the original Fung equation. The experimental characterization of the static hyperelastic behaviour, the relaxation, the dynamic modulus and the loss factor of woven Dacron from a commercial aortic prosthesis has been performed. An 11% difference of the reduced relaxation (after infinite time) between axial and circumferential directions has been observed for the woven Dacron. A very large increase in stiffness is obtained in case of harmonic loading with respect to the static loading. These findings are particularly relevant for dynamic modelling of currently used aortic grafts.

Original language	English (US)
Pages (from-to)	282-290
Number of pages	9
Journal	Journal of the Mechanical Behavior of Biomedical Materials
Volume	82
DOIs	https://doi.org/10.1016/j.jmbbm.2018.03.038
State	Published - Jun 2018

Keywords

Dacron
Dynamic modulus
Graft
Quasi-linear
Relaxation
Viscoelasticity

ASJC Scopus subject areas

Biomaterials
Biomedical Engineering
Mechanics of Materials

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10.1016/j.jmbbm.2018.03.038

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@article{cf52df44572f4cdda16d9bb10df28533,

title = "Viscoelastic characterization of woven Dacron for aortic grafts by using direction-dependent quasi-linear viscoelasticity",

abstract = "In case of direction-dependent viscoelasticity, a simplified formulation of the three-dimensional quasi-linear viscoelasticity has been obtained manipulating the original Fung equation. The experimental characterization of the static hyperelastic behaviour, the relaxation, the dynamic modulus and the loss factor of woven Dacron from a commercial aortic prosthesis has been performed. An 11% difference of the reduced relaxation (after infinite time) between axial and circumferential directions has been observed for the woven Dacron. A very large increase in stiffness is obtained in case of harmonic loading with respect to the static loading. These findings are particularly relevant for dynamic modelling of currently used aortic grafts.",

keywords = "Dacron, Dynamic modulus, Graft, Quasi-linear, Relaxation, Viscoelasticity",

author = "Marco Amabili and Prabakaran Balasubramanian and Ivan Breslavsky and Giovanni Ferrari and Eleonora Tubaldi",

note = "Funding Information: The authors acknowledge the financial support of the NSERC Discovery Grant ( 372493-13 ), the Canada Research Chair program and the Qatar grant NPRP 7–032-2–016 . Funding Information: The authors acknowledge the financial support of the NSERC Discovery Grant (372493-13), the Canada Research Chair program and the Qatar grant NPRP 7–032-2–016. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = jun,

doi = "10.1016/j.jmbbm.2018.03.038",

language = "English (US)",

volume = "82",

pages = "282--290",

journal = "Journal of the Mechanical Behavior of Biomedical Materials",

issn = "1751-6161",

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T1 - Viscoelastic characterization of woven Dacron for aortic grafts by using direction-dependent quasi-linear viscoelasticity

AU - Amabili, Marco

AU - Balasubramanian, Prabakaran

AU - Breslavsky, Ivan

AU - Ferrari, Giovanni

AU - Tubaldi, Eleonora

N1 - Funding Information: The authors acknowledge the financial support of the NSERC Discovery Grant ( 372493-13 ), the Canada Research Chair program and the Qatar grant NPRP 7–032-2–016 . Funding Information: The authors acknowledge the financial support of the NSERC Discovery Grant (372493-13), the Canada Research Chair program and the Qatar grant NPRP 7–032-2–016. Publisher Copyright: © 2018 Elsevier Ltd

PY - 2018/6

Y1 - 2018/6

N2 - In case of direction-dependent viscoelasticity, a simplified formulation of the three-dimensional quasi-linear viscoelasticity has been obtained manipulating the original Fung equation. The experimental characterization of the static hyperelastic behaviour, the relaxation, the dynamic modulus and the loss factor of woven Dacron from a commercial aortic prosthesis has been performed. An 11% difference of the reduced relaxation (after infinite time) between axial and circumferential directions has been observed for the woven Dacron. A very large increase in stiffness is obtained in case of harmonic loading with respect to the static loading. These findings are particularly relevant for dynamic modelling of currently used aortic grafts.

AB - In case of direction-dependent viscoelasticity, a simplified formulation of the three-dimensional quasi-linear viscoelasticity has been obtained manipulating the original Fung equation. The experimental characterization of the static hyperelastic behaviour, the relaxation, the dynamic modulus and the loss factor of woven Dacron from a commercial aortic prosthesis has been performed. An 11% difference of the reduced relaxation (after infinite time) between axial and circumferential directions has been observed for the woven Dacron. A very large increase in stiffness is obtained in case of harmonic loading with respect to the static loading. These findings are particularly relevant for dynamic modelling of currently used aortic grafts.

KW - Dacron

KW - Dynamic modulus

KW - Graft

KW - Quasi-linear

KW - Relaxation

KW - Viscoelasticity

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AN - SCOPUS:85044922271

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JO - Journal of the Mechanical Behavior of Biomedical Materials

JF - Journal of the Mechanical Behavior of Biomedical Materials

ER -

Viscoelastic characterization of woven Dacron for aortic grafts by using direction-dependent quasi-linear viscoelasticity

Abstract

Keywords

ASJC Scopus subject areas

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