Adhesive depth-sensing indentation tests: Slopes of the force-displacement curves

Borodich, Feodor M. ORCID: https://orcid.org/0000-0002-7935-0956 and Galanov, Boris A. 2022. Adhesive depth-sensing indentation tests: Slopes of the force-displacement curves. Mechanics Research Communications 126 , 104008. 10.1016/j.mechrescom.2022.104008 Item availability restricted.

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Abstract

Depth-sensing indentation experiments are a very important tool for estimating mechanical properties of modern materials. A review of various aspects of contact problems that used as the theoretical basis for interpretation of depth-sensing nanoindentation experiments is presented. Usually, analytical treatment of the indentation tests is based on analysis of the slopes of the force–displacement curves according to the non-adhesive Hertz contact theory. However, molecular adhesion is crucially important for many physical processes at the micro/nano-scales. Here, depth-sensing indentation techniques are reviewed and analyzed using the recent results obtained for adhesive contact problems. Fundamental relations for adhesive nanoindentation tests are derived for both frictionless and no-slip boundary conditions within the contact region. It is argued that the adhesive effects may be very important for treatment of the nanoindentation tests because the slopes of the force–displacement curves may considerably differ from the slopes derived using the non-adhesive contact theory.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	Elsevier
ISSN:	0093-6413
Date of First Compliant Deposit:	13 January 2023
Date of Acceptance:	10 October 2022
Last Modified:	17 Nov 2023 22:29
URI:	https://orca.cardiff.ac.uk/id/eprint/154477

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