Linear viscoelastic properties of bovine brain tissue in smear

被引：130

作者：

Bilston, LE ^{[1
]}

Liu, ZZ ^{[1
]}

Nhan, PT ^{[1
]}

机构：

[1] Univ Sydney, Dept Mech & Mechatron Engn, Sydney, NSW 2006, Australia

来源：

BIORHEOLOGY | 1997年 / 34卷 / 06期

关键词：

biomechanics; rheology; tissue mechanics; viscoelasticity;

D O I：

10.1016/S0006-355X(98)00022-5

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

We report the results from a series of rheological tests of fresh bovine brain tissue. Using a standard Bohlin VOR shear rheometer, shear relaxation and oscillating strain sweep experiments were performed on disks of brain tissue 30 mm in diameter, with a thickness of 1.5-2 mm, The strain sweep experiment showed that the viscoelastic strain limit is of the order of 0.1% strain. Shear relaxation data do not indicate the presence of a long-term elastic modulus, indicating fluid-like behavior. A relaxation spectrum was calculated by inverting the experimental data and used to predict oscillatory response, which agreed well with measured data. (C) 1998 Elsevier Science Ltd.

引用

页码：377 / 385

页数：9