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The influence of internal length scales on mechanical properties in natural nanocomposites: A comparative study on inner layers of seashells

Paper ID Volume ID Publish Year Pages File Format Full-Text
1742 90 2008 13 PDF Available
Title
The influence of internal length scales on mechanical properties in natural nanocomposites: A comparative study on inner layers of seashells
Abstract

Natural materials exhibit outstanding properties compared to their single constituents because of their hierarchical alignment. Therefore, they can be used as a guide to enhance the properties of artificial nanocomposite materials, which eventually could excel compared to their biological counterparts. In this study, seashells of five species with different microstructures were compared by correlating the sizes and aspect ratios of the building blocks to their mechanical behavior. The analyzed nacreous seashells were Trochus maculatus, Haliotis rufescens and Pteria penguin; the non-nacreous seashells were Meretrix lusoria and Pecten maximus. The results were used to determine the optimal values for the shape, size and volume fraction of the structural elements with regards to hardness, Young’s modulus and fracture toughness. Surprisingly, the aspect ratio of the mineral phase in all seashells investigated was found to be close to the optimal value for strength as predicted by theory.

Keywords
Nacre; Composite; Thermogravimetric analysis; Nanoindentation; Toughness
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Publisher
Database: Elsevier - ScienceDirect
Journal: Acta Biomaterialia - Volume 4, Issue 6, November 2008, Pages 1694–1706
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us