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Anisotropic mechanical behaviors and their structural dependences of crossed-lamellar structure in a bivalve shell
Jiao, D.; Liu, Z. Q.; Qu, R. T.; Zhang, Z. F.; liuzq@imr.ac.cn; zhfzhang@imr.ac.cn
2016
Source PublicationMATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
ISSN0928-4931
Volume59Pages:828-837
AbstractCrossed-lamellar structure is one of the most common organizations found in mollusk shells and may serve as a natural mimetic model for designing bio-inspired synthetic materials. Nonetheless, the mechanical behaviors and corresponding mechanisms have rarely been investigated for individual macro-layer of such structure. The integrated effects of orientation and hydration also remain unclear. In this study, the mechanical behaviors and their structural dependences of pure crossed-lamellar structure in Saxidomus purpuratus shell were systematically examined by three-point bending and compression tests. Mechanical properties and fracture mechanisms were revealed to depend strongly on the orientation, hydration state and loading condition. Three basic cracking modes of inter-platelet, trans-platelet, and along the interfaces between first-order lamellae were identified, and the interfacial separation was enhanced by hydration. Macroscopic compressive fracture was accomplished through axial splitting during which multiple toughening mechanisms were activated. The competition among different cracking modes was quantitatively evaluated by analyzing their driving stresses and resistances from fundamental mechanics. This study helps to clarify the mechanical behaviors of naturally occurring crossed-lamellar structure, and accordingly, aids in designing new bin-inspired synthetic materials by mimicking it. (C) 2015 Elsevier B.V. All rights reserved.
description.department[jiao, d. ; liu, z. q. ; qu, r. t. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
KeywordBivalves Crossed-lamellar Structure Mechanical Properties Fracture Mechanism Anisotropy
Funding OrganizationNational Natural Science Foundation of China [51331007]; IMR SYNL-T.S. Ke Research Fellowship; China Postdoctoral Science Foundation [2014M561263]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74632
Collection中国科学院金属研究所
Corresponding Authorliuzq@imr.ac.cn; zhfzhang@imr.ac.cn
Recommended Citation
GB/T 7714
Jiao, D.,Liu, Z. Q.,Qu, R. T.,et al. Anisotropic mechanical behaviors and their structural dependences of crossed-lamellar structure in a bivalve shell[J]. MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS,2016,59:828-837.
APA Jiao, D.,Liu, Z. Q.,Qu, R. T.,Zhang, Z. F.,liuzq@imr.ac.cn,&zhfzhang@imr.ac.cn.(2016).Anisotropic mechanical behaviors and their structural dependences of crossed-lamellar structure in a bivalve shell.MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS,59,828-837.
MLA Jiao, D.,et al."Anisotropic mechanical behaviors and their structural dependences of crossed-lamellar structure in a bivalve shell".MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS 59(2016):828-837.
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