Nanomechanics of a high H/E carbonaceous material

Nakul Raykar; Varun Gupta; Bernard Kear; Manish Chhowalla; Adrian B. Mann

doi:10.1016/j.scriptamat.2007.07.022

Nanomechanics of a high H/E carbonaceous material

Nakul Raykar, Varun Gupta, Bernard Kear, Manish Chhowalla, Adrian B. Mann

Rutgers University

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Conventional analysis of nanoindentation data considers only the unloading curve, but this may be misleading for materials that are very elastic. An alternative method that considers the loading and unloading curve may be more appropriate. Results for a carbonaceous material with a high hardness (or yield stress) relative to its elastic modulus are presented. An analysis considering the whole nanoindentation cycle gives a ratio of H/E that is significantly higher than that obtained from just the loading or unloading curve.

Original language	English
Pages (from-to)	925-928
Number of pages	4
Journal	Scripta Materialia
Volume	57
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2007.07.022
Publication status	Published - Nov 1 2007

Keywords

Carbon and graphite
Elastic behaviour
Hardness
Nanoindentation
Work of indentation

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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abstract = "Conventional analysis of nanoindentation data considers only the unloading curve, but this may be misleading for materials that are very elastic. An alternative method that considers the loading and unloading curve may be more appropriate. Results for a carbonaceous material with a high hardness (or yield stress) relative to its elastic modulus are presented. An analysis considering the whole nanoindentation cycle gives a ratio of H/E that is significantly higher than that obtained from just the loading or unloading curve.",

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T1 - Nanomechanics of a high H/E carbonaceous material

AU - Raykar, Nakul

AU - Gupta, Varun

AU - Kear, Bernard

AU - Chhowalla, Manish

AU - Mann, Adrian B.

PY - 2007/11/1

Y1 - 2007/11/1

N2 - Conventional analysis of nanoindentation data considers only the unloading curve, but this may be misleading for materials that are very elastic. An alternative method that considers the loading and unloading curve may be more appropriate. Results for a carbonaceous material with a high hardness (or yield stress) relative to its elastic modulus are presented. An analysis considering the whole nanoindentation cycle gives a ratio of H/E that is significantly higher than that obtained from just the loading or unloading curve.

AB - Conventional analysis of nanoindentation data considers only the unloading curve, but this may be misleading for materials that are very elastic. An alternative method that considers the loading and unloading curve may be more appropriate. Results for a carbonaceous material with a high hardness (or yield stress) relative to its elastic modulus are presented. An analysis considering the whole nanoindentation cycle gives a ratio of H/E that is significantly higher than that obtained from just the loading or unloading curve.

KW - Carbon and graphite

KW - Elastic behaviour

KW - Hardness

KW - Nanoindentation

KW - Work of indentation

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