INDENTATION TESTS OF HUMAN ARTICULAR-CARTILAGE
INDENTATION TESTS OF HUMAN ARTICULAR-CARTILAGE
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DOI：
10.1016/0021-9290(76)90012-9
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发表时间：
1976-01-01
影响因子：
2.4
通讯作者：
MOCKROS, LF
中科院分区：
文献类型：
--
作者：
HORI, RY;MOCKROS, LF
通过扭转剪切和单轴侧限压缩实验测定了关节软骨的短时剪切模量和体积模量。这些结果进行了比较，通过使用压头试验的数据和理论解决方案的压入弹性层粘结到刚性半空间的刚性冲头的凹痕预测的剪切模量的值。为了验证从压头测试预测模量的有效性，对聚氨酯橡胶进行了对照实验。虽然它们准确地预测了橡胶的弹性特性，但关节软骨的非线性、各向异性和非均匀性使得压头测试不太适合用于软骨。预测值和测量值相关，但具有相当大的分散性。关节软骨的短时剪切模量，包括健康和患病的人样品，在4-35 × 10 - 4范围内变化。105 N/m2和在9-170 × 105 N/m2范围内的短时体积模量。106 N/m2。组织储存的方式对测量的机械性能有主要影响。
The short-time shear and bulk moduli of articular cartilage were determined experimentally using torsional shear and uniaxial confined compression tests. These results are compared to the values of shear moduli predicted by using data from indenter tests and the theoretical solution for the identation of a rigid punch pressed into an elastic layer bonded to a rigid halfspace. To verify the effectiveness of predicting moduli from indenter tests, control experiments were performed on polyurethane rubber. Although they accurately predict the elastic properties for rubber, the nonlinearity, anisotropy and non-homogeneity of articular cartilage make indenter tests less appropriate for use with cartilage. The predicted and measured values correlate, but with considerable dispersion. The short-time shear modulus of articular cartilage, including both healthy and diseased human samples, varied over the range 4-35 .times. 105 N/m2 and the short-time bulk modulus over the range 9-170 .times. 106 N/m2. The means of tissue storage had a major effect on the measured mechanical properties.