Micromechanical characterization of prismless enamel in the tuatara, Sphenodon punctatus.
Micromechanical characterization of prismless enamel in the tuatara, Sphenodon punctatus.
复制标题
斑蜥无棱牙釉质的微机械特征
DOI:
10.1016/j.jmbbm.2014.07.024
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发表时间:
2014
影响因子:
3.9
通讯作者:
Schneider GA
中科院分区:
文献类型:
--
作者:
Yilmaz ED;Bechtle S;Ozcoban H;Kieser JA;Swain MV;Schneider GA
Dental enamel – a naturally occurring biocomposite of mineral and protein – has evolved from a simple prismless to an advanced prismatic structure over millions of years. Exploring the mechanical function of its structural features with differing characteristics is of great importance for evolutionary developmental studies as well as for material scientists seeking to model the mechanical performance of biological materials. In this study, mechanical properties of prismless tuataraSphenodon punctatusenamel were characterized. Using micro-cantilever bending samples the fracture strength and elastic modulus were found to be 640±87 MPa and 42±6 GPa, respectively in the orientation parallel to the crystallite long axis, which decreased in the orthogonal direction. The intrinsic fracture toughness of tuatara enamel ranged from 0.21 MPa m1/2and 0.32 MPa m1/2. These values correspond to the lower limit of the range of values observed in prismatic enamel at the hierarchical level 1.
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DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
J. Rensberger
通讯作者:
J. Rensberger
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
W. Koenigswald
通讯作者:
W. Koenigswald
影响因子:
3
作者:
Enax, Joachim;Fabritius, Helge-Otto;Epple, Matthias
通讯作者:
Epple, Matthias
影响因子:
3.9
作者:
Bechtle, Sabine;Oezcoban, Hueseyin;Schneider, Gerold A.
通讯作者:
Schneider, Gerold A.
影响因子:
14
作者:
Bechtle, Sabine;Habelitz, Stefan;Schneider, Gerold A.
通讯作者:
Schneider, Gerold A.