Comparison of mechanical behaviors of enamel rod and interrod regions in enamel
Comparison of mechanical behaviors of enamel rod and interrod regions in enamel
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DOI：
10.1557/jmr.2011.409
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发表时间：
2012-01
影响因子：
2.7
通讯作者：
S. Ang;M. Saadatmand;M. Swain;A. Klocke;G. Schneider
中科院分区：
文献类型：
--
作者：
S. Ang;M. Saadatmand;M. Swain;A. Klocke;G. Schneider
棒间区域存在于釉质棒之间，并且已知与釉质棒（棒内区域）相比具有不同的微晶取向和更高的有机物含量。本研究的目的是利用球形压痕来表征这两个区域的力学性能，特别是时间相关的性能。尽管非常少量的蛋白质，但随着变形时间的增加，杆间区域显示出统计学上显著高于杆内区域的非弹性能量耗散。恒定载荷下的总位移（蠕变），粘度和应力松弛行为的两个区域也报告。与先前研究的观察结果相似，杆内区域的弹性模量和硬度显著高于杆间区域。
Interrod regions exist between the enamel rods and are known to have different crystallite orientations and a higher organic content compared to the enamel rods (the intrarod regions). This study aims to characterize the mechanical properties of both regions especially the time-dependent properties by using spherical indentation. Despite the very small amount of proteins, the interrod region shows statistically significantly higher inelastic energy dissipation than the intrarod region with increased deformation times. The total displacement under constant load (creep), viscosity, and stress relaxation behavior of both regions are also reported. Similar to the observation of previous studies, the elastic modulus and hardness in the intrarod region are significantly higher than in the interrod region.