On the fracture mechanisms of nacre: Effects of structural orientation

doi:10.1016/j.jbiomech.2019.109336

IMR OpenIR

	On the fracture mechanisms of nacre: Effects of structural orientation
	Jiao, D.1; Qu, R. T.1,2; Weng, Z. Y.1; Liu, Z. Q.1,2; Zhang, Z. F.1,2
通讯作者	Liu, Z. Q.(zengqianliu@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
	2019-11-11
发表期刊	JOURNAL OF BIOMECHANICS
ISSN	0021-9290
卷号	96 页码:8
摘要	The nacre of mollusk shells is distinguished by an exceptional mechanical efficiency which is derived essentially from its lamellar structure and frequently acts as a source of inspiration for the development of biomimetic materials. The structure and mechanical properties of nacre have been intensively investigated with a special focus on its toughening strategies; nevertheless, the fracture mechanisms, more specifically the critical stress/strain conditions for the failure of nacre, and the effects of structural orientation and hydration state remain largely unexplored. Here uniaxial compression tests were performed on nacre of both dry and hydrated states with different off-axis angles, i.e., the inclination of loading axis with respect to the lamellar structure, ranging from 0 degrees to 90 degrees. The mechanical properties and fracture characteristics of nacre and their dependences on the structural orientation and hydration state were elucidated in terms of mechanics behind failure. Quantitative relationships were established between the mechanical properties and off-axis angle based on different failure criteria. The competition between the fracture modes of fragmentation and shearing was quantified by comparing their respective driving force and resistance on the interfacial plane. This study may aid the understanding on the mechanical behavior of nacre and nacre-inspired synthetic materials and promote a better replication of the underlying design principles of nacre in man-made systems. (C) 2019 Elsevier Ltd. All rights reserved.
关键词	Fracture Lamellar structure Structural orientation Nacre Biomechanics
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jbiomech.2019.109336
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51871216] ; National Natural Science Foundation of China[51501190]
WOS研究方向	Biophysics ; Engineering
WOS类目	Biophysics ; Engineering, Biomedical
WOS记录号	WOS:000496861300004
出版者	ELSEVIER SCI LTD
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/137083
专题	中国科学院金属研究所
通讯作者	Liu, Z. Q.; Zhang, Z. F.
作者单位	1.Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Jiao, D.,Qu, R. T.,Weng, Z. Y.,et al. On the fracture mechanisms of nacre: Effects of structural orientation[J]. JOURNAL OF BIOMECHANICS,2019,96:8.
APA	Jiao, D.,Qu, R. T.,Weng, Z. Y.,Liu, Z. Q.,&Zhang, Z. F..(2019).On the fracture mechanisms of nacre: Effects of structural orientation.JOURNAL OF BIOMECHANICS,96,8.
MLA	Jiao, D.,et al."On the fracture mechanisms of nacre: Effects of structural orientation".JOURNAL OF BIOMECHANICS 96(2019):8.