Deconvolution of hardness from data obtained from nanoindentation of rough surfaces

Bobji, MS and Biswas, SK (1999) Deconvolution of hardness from data obtained from nanoindentation of rough surfaces. In: Journal Of Materials Research, 14 (6). pp. 2259-2268.

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Abstract

Variation of hardness with penetration in nanoindentation of a rough surface is a compound effect of variation in asperity geometry with penetration, designated geometric effect, and genuine property gradients with depth as may exist in a near- surface zone. We simulate indentation of a rough surface numerically to elucidate the geometric effects and validate it by some model "macro" experiments. Finally, we formulate a general framework to deconvolute genuine property variation by normalizing the measured hardness with the geometric effect.

Item Type:	Journal Article
Publication:	Journal Of Materials Research
Publisher:	Materials Research Society
Additional Information:	The copyright belongs to Materials Research Society.
Keywords:	rough surfaces;hardness;nanoindentation;geometric effects
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	21 Feb 2005
Last Modified:	19 Sep 2010 04:15
URI:	http://eprints.iisc.ac.in/id/eprint/1524

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