IMR OpenIR
Giant panda's tooth enamel: Structure, mechanical behavior and toughening mechanisms under indentation
Weng, ZY; Liu, ZQ; Ritchie, RO; Jiao, D; Li, DS; Wu, HL; Deng, LH; Zhang, ZF; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2016-12-01
发表期刊JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
ISSN1751-6161
卷号64页码:125-138
摘要The giant panda's teeth possess remarkable load-bearing capacity and damage resistance for masticating bamboos. In this study, the hierarchical structure and mechanical behavior of the giant panda's tooth enamel were investigated under indentation. The effects of loading orientation and location on mechanical properties of the enamel were clarified and the evolution of damage in the enamel under increasing load evaluated. The nature of the damage, both at and beneath the indentation surfaces, and the underlying toughening mechanisms were explored. Indentation cracks invariably were seen to propagate along the internal interfaces, specifically the sheaths between enamel rods, and multiple extrinsic toughening mechanisms, e.g., crack deflection/twisting and uncracked-ligament bridging, were active to shield the tips of cracks from the applied stress. The giant panda's tooth enamel is analogous to human enamel in its mechanical properties, yet it has superior hardness and Young's modulus but inferior toughness as compared to the bamboo that pandas primarily feed on, highlighting the critical roles of the integration of underlying tissues in the entire tooth and the highly hydrated state of bamboo foods. Our objective is that this study can aid the understanding of the structure-mechanical property relations in the tooth enamel of mammals and further provide some insight on the food habits of the giant pandas. (C) 2016 Elsevier Ltd. All rights reserved.
部门归属[weng, z. y. ; liu, z. q. ; jiao, d. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [liu, z. q. ; ritchie, r. o.] univ calif berkeley, dept mat sci & engn, berkeley, ca 94720 usa ; [li, d. s. ; wu, h. l. ; deng, l. h.] china conservat & res ctr giant panda, wolong 623003, peoples r china
关键词Giant Panda Tooth Enamel Hierarchical Structure Indentation Anisotropy Toughening Mechanisms
学科领域Engineering, Biomedical ; Materials Science, bioMaterials
资助者National Natural Science Foundation of China [51501190, 51331007]; Multi-University Research Initiative from the Air Force Office of Scientific Research [AFOSR-FA9550-15-1-0009]
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/76174
专题中国科学院金属研究所
通讯作者Liu, ZQ; Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Weng, ZY,Liu, ZQ,Ritchie, RO,et al. Giant panda's tooth enamel: Structure, mechanical behavior and toughening mechanisms under indentation[J]. JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,2016,64:125-138.
APA Weng, ZY.,Liu, ZQ.,Ritchie, RO.,Jiao, D.,Li, DS.,...&Zhang, ZF .(2016).Giant panda's tooth enamel: Structure, mechanical behavior and toughening mechanisms under indentation.JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS,64,125-138.
MLA Weng, ZY,et al."Giant panda's tooth enamel: Structure, mechanical behavior and toughening mechanisms under indentation".JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS 64(2016):125-138.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Weng, ZY]的文章
[Liu, ZQ]的文章
[Ritchie, RO]的文章
百度学术
百度学术中相似的文章
[Weng, ZY]的文章
[Liu, ZQ]的文章
[Ritchie, RO]的文章
必应学术
必应学术中相似的文章
[Weng, ZY]的文章
[Liu, ZQ]的文章
[Ritchie, RO]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。