Use of scaling functions to determine mechanical properties of thin coatings from microindentation tests

Jean-Pierre Bardet, I. Vardoulakis

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The indentation of elastic-plastic coatings deposited on elastic substrates is studied in this work. The functional expressions that relate the load-indentation behaviour to coating and substrate material properties are derived using dimensional analysis in conjunction with finite element simulations. Based on these scaling functions, a method is proposed to determine the coating Young's modulus, yield strength and strain hardening properties from the micro-indentation tests. A method to obtain improved estimates of the material hardness is also discussed. While the analyses are based on a conical (i.e. Rockwell) indenter, the indenter angle used in the simulations was selected so that the results can also be used to extract mechanical properties from measurements using the pyramidal indenters such as Vickers and Berkovich types. (C) 2000 Elsevier Science Ltd. All rights reserved.

Original languageEnglish (US)
Pages (from-to)335-351
Number of pages17
JournalInternational Journal of Solids and Structures
Volume38
Issue number2
DOIs
StatePublished - Jan 2000
Externally publishedYes

Fingerprint

Indentation
Scaling Function
indentation
microhardness
Mechanical Properties
Coating
mechanical properties
coatings
scaling
Coatings
Mechanical properties
plastic coatings
Substrate
Plastic coatings
Strain Hardening
strain hardening
Dimensional Analysis
dimensional analysis
Young's Modulus
Substrates

Keywords

  • Finite element simulation
  • Indentation
  • Mechanical properties of coating

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Use of scaling functions to determine mechanical properties of thin coatings from microindentation tests. / Bardet, Jean-Pierre; Vardoulakis, I.

In: International Journal of Solids and Structures, Vol. 38, No. 2, 01.2000, p. 335-351.

Research output: Contribution to journalArticle

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