RHEOLOGY OF CORNEA - EXPERIMENTAL TECHNIQUES AND RESULTS
RHEOLOGY OF CORNEA - EXPERIMENTAL TECHNIQUES AND RESULTS
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DOI：
10.1016/s0014-4835(68)80064-8
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发表时间：
1968-01-01
影响因子：
3.4
通讯作者：
NYQUIST, GW
中科院分区：
文献类型：
--
作者：
NYQUIST, GW
通过单轴拉伸试验，研究了角膜的应力-应变-时间特性。使用自重载荷施加应力，并通过光学显微照相术记录所产生的应变。对于生理应力范围，力学性能几乎是线性的，而非线性在更大范围内占主导地位。各向异性的考虑表明，力学性能不是角取向的函数，这支持基质纤维的随机取向理论。角膜对外加应力的反应包括瞬时和延迟(时间相关)弹性成分。
A study of the stress-strain-time properties of the cornea as evidenced by uniaxial tensile tests is presented. Stresses were applied using dead weight loads, and the resulting strains were recorded by means of photomicrography. For the physiological range of stress the mechanical properties are nearly linear, whereas non-linearity predominates over an extended range. Anisotropy considerations indicate that the mechanical properties are not a function of angular orientation, which supports theories of random orientation of the stromal fibers. The response of the cornea to an applied stress includes instantaneous and retarded (time dependent) elastic components.