NDLI: 3-D Modeling of nanoindentation experiment on a coating-substrate system

Content Provider	Springer Nature Link
Author	Vlachos, D. E. Markopoulos, Y. P. Kostopoulos, V.
Copyright Year	2001
Abstract	The validity of indentation tests for the characterization of the mechanical properties of coatings relies greatly on the indentation depth. Deep indentation concludes to unreliable results due to the substrate effect on the measured properties. At shallow depths the size effect can also be an important error factor. The purpose of the present study is the determination of the critical ratio of coating thickness to indentation depth, up to which the substrate properties have a negligible effect on the force versus indentation depth curve and thus on determined mechanical properties of the coating. The analysis required, was conducted using finite element method. A spherical (ball) indenter was used and a three dimensional model of the indenter/coating-substrate system was applied. The effect of the coating to substrate Yield strength ratio, on the critical coating thickness to indentation depth ratio, was investigated for three different coating to substrate Young's modulus ratios. The results of this work provide considerable insight for the determination of the confidence indentation depth during micro-indentation for layered systems with different properties.
Starting Page	138
Ending Page	144
Page Count	7
File Format	PDF
ISSN	01787675
Journal	Computational Mechanics
Volume Number	27
Issue Number	2
e-ISSN	14320924
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-02-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Ocean Engineering Computational Theory and Mathematics Mechanical Engineering Computational Mechanics Computational Mathematics

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