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Hierarchical structure observation and nanoindentation size effect characterization for a limnetic shell
Song JR(宋晶如); Fan CC(范存才); Ma HS(马寒松); Wei YG(魏悦广)
Source PublicationACTA MECHANICA SINICA
2015-06-01
Volume31Issue:3Pages:364-372
ISSN0567-7718
Abstract

In the present research, hierarchical structure observation and mechanical property characterization for a type of biomaterial are carried out. The investigated biomaterial is Hyriopsis cumingii, a typical limnetic shell, which consists of two different structural layers, a prismatic "pillar" structure and a nacreous "brick and mortar" structure. The prismatic layer looks like a "pillar forest" with variation-section pillars sized on the order of several tens of microns. The nacreous material looks like a "brick wall" with bricks sized on the order of several microns. Both pillars and bricks are composed of nanoparticles. The mechanical properties of the hierarchical biomaterial are measured by using the nanoindentation test. Hardness and modulus are measured for both the nacre layer and the prismatic layer, respectively. The nanoindentation size effects for the hierarchical structural materials are investigated experimentally. The results show that the prismatic nanostructured material has a higher stiffness and hardness than the nacre nanostructured material. In addition, the nanoindentation size effects for the hierarchical structural materials are described theoretically, by using the trans-scalemechanics theory considering both strain gradient effect and the surface/interface effect. The modeling results are consistent with experimental ones.;In the present research, hierarchical structure observation and mechanical property characterization for a type of biomaterial are carried out. The investigated biomaterial is Hyriopsis cumingii, a typical limnetic shell, which consists of two different structural layers, a prismatic "pillar" structure and a nacreous "brick and mortar" structure. The prismatic layer looks like a "pillar forest" with variation-section pillars sized on the order of several tens of microns. The nacreous material looks like a "brick wall" with bricks sized on the order of several microns. Both pillars and bricks are composed of nanoparticles. The mechanical properties of the hierarchical biomaterial are measured by using the nanoindentation test. Hardness and modulus are measured for both the nacre layer and the prismatic layer, respectively. The nanoindentation size effects for the hierarchical structural materials are investigated experimentally. The results show that the prismatic nanostructured material has a higher stiffness and hardness than the nacre nanostructured material. In addition, the nanoindentation size effects for the hierarchical structural materials are described theoretically, by using the trans-scalemechanics theory considering both strain gradient effect and the surface/interface effect. The modeling results are consistent with experimental ones.

KeywordBiomaterial Hierarchical Structure Mechanical Property Nanoindentation Size Effect Trans-scale Mechanics
Subject AreaEngineering ; Mechanics
DOI10.1007/s10409-015-0405-x
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000357448500007
WOS KeywordDynamic-mechanical Response ; Biological-materials ; Fracture-toughness ; Elastic-modulus ; Strombus-gigas ; Nacre ; Bone ; Indentation ; Strength ; Behavior
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
DepartmentLNM新型材料及结构的多尺度力学
Classification二类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/55336
Collection非线性力学国家重点实验室
Corresponding AuthorWei YG(魏悦广)
AffiliationChinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Song JR,Fan CC,Ma HS,et al. Hierarchical structure observation and nanoindentation size effect characterization for a limnetic shell[J]. ACTA MECHANICA SINICA,2015,31(3):364-372.
APA Song JR,Fan CC,Ma HS,&Wei YG.(2015).Hierarchical structure observation and nanoindentation size effect characterization for a limnetic shell.ACTA MECHANICA SINICA,31(3),364-372.
MLA Song JR,et al."Hierarchical structure observation and nanoindentation size effect characterization for a limnetic shell".ACTA MECHANICA SINICA 31.3(2015):364-372.
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