Biswas, N and Dey, A and Mukhopadhyay, Anoop Kumar (2012) Loading rate effect on nanohardness of human enamel. Indian Journal of Physics , 86 (7). pp. 569-574. ISSN 0973-1458

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Abstract

In the present work, nanoindentation technique has been utilised to study the physics of deformation at the scale of micro/nano-structure of tooth enamel which is basically the hardest natural biomaterial in the human body comprising of a hybrid combination of hydroxypatite ceramic nano-crystal and organic-protein matrix. We have observed about 8 % increase in the nanohardness of human enamel with the increase in loading rate from similar to 1 x 10(3) mu N s(-1) to 3 x 10(5) mu N s(-1). The results have been explained in terms of the maximum shear stress generated underneath the nanoindenter.

Item Type:	Article
Uncontrolled Keywords:	Nanoindentation; Nanohardness; Loading rate; Enamel
Subjects:	Microstructure and Characterization
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	18 Sep 2012 07:21
Last Modified:	18 Sep 2012 07:21
URI:	http://cgcri.csircentral.net/id/eprint/1791

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