COMPACT BONE AS A NON-ISOTROPIC MATERIAL
COMPACT BONE AS A NON-ISOTROPIC MATERIAL
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DOI：
10.1002/aja.1000910302
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发表时间：
1952-01-01
影响因子：
--
通讯作者：
LIDDICOAT, RT
中科院分区：
文献类型：
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作者：
DEMPSTER, WT;LIDDICOAT, RT
致密骨测试件是由较大的长骨（干燥的人体骨骼材料）加工而成，并在工程测试机中进行压缩和拉伸测试。测定了刚度或弹性模量以及拉伸和压缩强度。适用于干燥和水浸样品。干骨的拉伸强度低于压缩强度，但模量值相似。湿骨，大概就像活骨一样，比干骨[长划线]硬度低，尤其是在张力下[长划线]，并且其强度也较小，尤其是在张力下。此外，骨立方体被纵向（平行于哈弗系统）、径向（表面到骨髓）和切向压缩。在干或湿的弹性模量或强度方面，径向和切向压缩之间没有检测到显着差异。然而，对于湿和干的两种测量[长划线]，两个横轴都比纵轴刚性小并且弱得多。因此，骨骼被证明是一种非各向同性或正交各向异性材料，如木材。这些数据相对于文献中的参考文献及其在确定骨骼的有效特征和薄弱特征方面的意义进行了讨论。
Test pieces of compact bone were machined from the larger long bones (dry human skeletal material) and were tested in compression and in tension in engineering testing machines. The stiffness or modulus of elasticity and the tensile and compressive strengths were detd. for both dry and water-soaked specimens. Dry bone has less strength in tension than in compression, but the modulus values are similar. Wet bone, presumably like living bone, is less stiff than dry bone[long dash]especially in tension[long dash]and its strength is less also, again especially in tension. In addition, cubes of bone were compressed longitudinally (parallel to Haversian systems), radially (surface to marrow) and tangentially. No significant difference could be detected between radial and tangential compression for either modulus of elasticity or strength dry or wet. Both transverse axes, however, are less stiff and much weaker than the longitudinal axis for both measures[long dash]again both wet and dry. Bone thus was shown to be a non-isotropic or orthotropic material like wood. The data are discussed relative to references in the literature and to their significance in determining the effective and the weak features of bones.