Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Hierarchical structure observation and nanoindentation size effect characterization for a limnetic shell

Hierarchical structure observation and nanoindentation size effect characterization for a... 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-scale mechanics theory considering both strain gradient effect and the surface/interface effect. The modeling results are consistent with experimental ones. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Acta Mechanica Sinica" Springer Journals

Hierarchical structure observation and nanoindentation size effect characterization for a limnetic shell

Loading next page...
 
/lp/springer-journals/hierarchical-structure-observation-and-nanoindentation-size-effect-Ji8oSuQxF0

References (43)

Publisher
Springer Journals
Copyright
2015 The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg
ISSN
0567-7718
eISSN
1614-3116
DOI
10.1007/s10409-015-0405-x
Publisher site
See Article on Publisher Site

Abstract

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-scale mechanics theory considering both strain gradient effect and the surface/interface effect. The modeling results are consistent with experimental ones.

Journal

"Acta Mechanica Sinica"Springer Journals

Published: Jun 1, 2015

There are no references for this article.