Circumferential and longitudinal viscoelasticity of human iliac arterial segments in vitro

Papageorgiou, G.L.; Jones, N.B.

doi:10.1016/0141-5425(88)90031-3

Cited by 18 publications

(7 citation statements)

References 22 publications

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“…Many investigators [11,12] showed that the arterial wall is stiffer in the circumfer-2.2 The elastic properties of the arterial wall as a ential direction than axially, but others reported opposite composite material results [13,14]. Tanaka and Fung [15] showed that the The structural response of arterial walls is characteristicanine thoracic aorta is stiffer in the longitudinal direccally complex.…”

Section: The Structure and Composition Of The Arterial Wallsmentioning

confidence: 99%

The numerical analysis of fluid-solid interactions for blood flow in arterial structures Part 1: A review of models for arterial wall behaviour

Zhao

Collins

1998

Proc Inst Mech Eng H

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The structural response of a large artery is characteristically complex and includes the highly non-linear, history-dependent response of a nonhomogeneous anisotropic structure undergoing finite deformations. The mechanics of the arterial wall has been studied for nearly two centuries. The goals of such research range from the desire to have a basic knowledge and understanding of the mechanics and physiology of this complex structure to the need for data and methods for the design of arterial prostheses. In this paper, the models for arterial wall behaviour are critically reviewed. Firstly, the structure and general characteristics of the arterial wall are discussed. This is followed by a comprehensive review of the constitutive laws. Finally, structural analyses of the arterial wall by mathematical and numerical methods are discussed. Predictions using the authors' preferred models give focus to important issues, and in Part 2 the review and predictions are extended to the fluid solid coupled situation.

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Section: The Structure and Composition Of The Arterial Wallsmentioning

confidence: 99%

The numerical analysis of fluid-solid interactions for blood flow in arterial structures Part 1: A review of models for arterial wall behaviour

Zhao

Collins

1998

Proc Inst Mech Eng H

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“…The wall stress is influenced by factors such as curvature, eccentricity, morphology, wall thickness and intraluminal thrombus (Vorp 2007;Sacks et al 1998;Di Martino et al 2001;Venkatasubramaniam et al 2004;Raghavan et al 2006;Heng et al 2008). A variety of numerical and experimental (in vitro) techniques have been utilised for quantifying these arterial wall stresses and strains (Ling and Atabek 1972;Hayashi et al 1974;Papageorgiou and Jones 1988). A number of studies of AAAs have indicated that wall stress appears to access rupture risk more accurately than AAA diameter or other previously published rupture indices (Fillinger et al 2002).…”

Section: Introductionmentioning

confidence: 98%

Finite element and photoelastic modelling of an abdominal aortic aneurysm: a comparative study

Callanan

Morris

McGloughlin

2012

Computer Methods in Biomechanics and Biomedical Engineering

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Rupture prediction of abdominal aortic aneurysms (AAAs) remains a clinical challenge. Finite element analysis (FEA) may allow for improved identification for intervention timing, but the method needs further substantiation. In this study, experimental photoelastic method and finite element techniques were compared using an idealised AAA geometry. There was good agreement between the numerical and experimental results. At the proximal and distal end of the AAA model, the maximum differences in principle strain for an internal pressure of 120 mmHg had differences ranging from 0.03 to 10.01%. The maximum difference in principle strain for the photoelastic and the finite element model at a pressure of 120 mmHg was 0.167 and 0.158, respectively. The current research strengthens the case for using FEA as an adjunct to the current clinical practice of utilising diameter measurement for intervention timing.

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“…A variety of techniques have previously been used for non-contact experimental strain analyses of compliant arterial models, notably video extensometer (motion measured by cameras) [11][12][13], photonic sensor [14] photocell combined with lightemitting diode or scanning laser [15,16]. These methods, while allowing measurement of the surface stresses do not provide data on the full stress field without additional measurements.…”

Section: Introductionmentioning

confidence: 99%

Experimental Assessment of Stress Patterns in Abdominal Aortic Aneurysms using the Photoelastic Method

Morris

O’Donnell

Delassus

et al. 2004

Strain

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Abdominal aortic aneurysm (AAA) sac size is a major clinical problem. The maximum sac diameter is the major determining factor for treatment. There is a direct correlation between the wall stress and rupture sites for AAA with maximum wall stress not being dependent on the maximum diameter of the vessel but on the morphology of vessel. The reflective photoelastic method was developed to experimentally evaluate the stresses and strains in a model AAA. The epoxy resin material was used as the self-supporting structure and had similar mechanical properties to the aneurysmal aorta. For both static and dynamic fluid testing the high-stressed regions were located proximally and distally to the aneurysm. This correlates to reported in vivo rupture sites. There was a low-stress region at the location of greatest diameter at the centre of the aneurysm. The direction of the maximum principal stress was found to be in the circumferential direction. The maximum stress for a high blood pressure of 22.7 kPa (170 mmHg) was 35% greater than that for a normal blood pressure of 16.0 kPa (120 mmHg). The photoelastic method is a powerful and innovative method of analysing stresses in AAA models, producing results, which are visual and easy to interpret.

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Circumferential and longitudinal viscoelasticity of human iliac arterial segments in vitro

Cited by 18 publications

References 22 publications

The numerical analysis of fluid-solid interactions for blood flow in arterial structures Part 1: A review of models for arterial wall behaviour

The numerical analysis of fluid-solid interactions for blood flow in arterial structures Part 1: A review of models for arterial wall behaviour

Finite element and photoelastic modelling of an abdominal aortic aneurysm: a comparative study

Experimental Assessment of Stress Patterns in Abdominal Aortic Aneurysms using the Photoelastic Method

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