Multi-Component Materials

Abrahams, Michael J.

doi:10.1007/978-1-349-01604-4_31

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…First, the material is not homogeneous. It is composed of strong fibers in a weak matrix, and the arrangement of these fibers determines the dependence of the mechanical properties on strip orientation (Abrahams, 1973;Paton et al, 1973). Furthermore, the size of the sample for testing should be small enough to allow a nearly uniform orientation of fibers in the sample, yet large enough to retain normal fiber geometry in soft tissue samples.…”

Section: Discussionmentioning

confidence: 99%

Tissue mechanics of canine pericardium in different test environments. Evidence for time-dependent accommodation, absence of plasticity, and new roles for collagen and elastin.

Lee¹,

Boughner²

1981

Circulation Research

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We have tested the mechanical properties of isolated canine pericardium at 37°C in Hanks' solution, and compared those results with similar tests on tissue at room temperature, both in Hanks' solution and merely kept moist with saline. Pericardium, which is nearly isotropic due to the layers of collagen aligned in different directions, is a composite material made up of collagen and elastin fibers in a viscous ground substance matrix. Rapidly applied loads result in a stress-strain response similar to the previous in vivo pressure-volume curves. Slowly applied loads produce an accommodatioii effect as fiber geometry rearranges through the viscous ground substance. Plasticity of the pericardium, long accepted as fact, is not present An accommodation effect is produced instead by shifts in the stress-strain curve due to cyclic loading, stress relaxation, and creep. The slow time course of the accommodation effect is responsible for the differences in hemodynamic effect between an acute and a chronic pericardial effusion. The mechanical properties of the pericardium are due primarily to collagen, which establishes the high ultimate tensile strength and high final slope of the stress-strain curves. The initial extensible portion of the stress-strain curve probably is due to initial rearrangement of collagen fiber weave under stress. Temperature dependence and previous digestion studies indicate a major role for elastin in determining the stress-strain response and limits to stress relaxation and creep. Thixotropy of the ground substance matrix may produce rate Independence In rapid filling of the pericardial sac Circ Res 49: 1981

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Section: Discussionmentioning

confidence: 99%

Tissue mechanics of canine pericardium in different test environments. Evidence for time-dependent accommodation, absence of plasticity, and new roles for collagen and elastin.

Lee¹,

Boughner²

1981

Circulation Research

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Biomimetic and Nonbiomimetic Approaches in Dura Substitutes: The Influence of Mechanical Properties

Muniz,

Baudequin

2024

Tissue Engineering Part B: Reviews

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

show abstract

Multi-Component Materials

Cited by 2 publications

References 3 publications

Tissue mechanics of canine pericardium in different test environments. Evidence for time-dependent accommodation, absence of plasticity, and new roles for collagen and elastin.

Tissue mechanics of canine pericardium in different test environments. Evidence for time-dependent accommodation, absence of plasticity, and new roles for collagen and elastin.

Biomimetic and Nonbiomimetic Approaches in Dura Substitutes: The Influence of Mechanical Properties

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