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Deconvolution of hardness from data obtained from nanoindentation of rough surfaces

  • M. S. Bobji (a1) and S. K. Biswas (a1)

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.

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Corresponding author

a)Address all correspondence to this author. e-mail: skbis@mecheng.iisc.ernet.in

References

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Deconvolution of hardness from data obtained from nanoindentation of rough surfaces

  • M. S. Bobji (a1) and S. K. Biswas (a1)

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