2021
DOI: 10.1115/1.4052218
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A Pragmatic Approach for the Evaluation of Depth-Sensing Indentation in the Self-Similar Regime

Abstract: This work evaluates and revisits elements from the depth-sensing indentation literature by means of carefully chosen practical indentation cases, simulated numerically and compared to experiments. The aim is to close a series of debated subjects, which constitute major sources of inaccuracies in the evaluation of depth-sensing indentation data in practice. Firstly, own examples and references from the literature are presented in order to demonstrate how crucial self-similarity detection and blunting distance c… Show more

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Cited by 5 publications
(2 citation statements)
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“…While the indenter tip is often assumed in the literature 2 to be completely rigid, the use of a deformable, purely elastic material model is justified by introducing a more realistic tip deformation (having impact on the tip contact area); the increase in model complexity is negligible. It was even shown by Mahdavi et al 32 that the deviations introduced by the usage of an “equivalent rigid indenter approximation are by no means negligible for practical reason ” . 32 The power law material model of the indented body is described by the stress–strain relationships: where E is the elastic modulus, the yield stress, the total effective strain, the plastic strain, and n the strain-hardening exponent.…”
Section: Methodsmentioning
confidence: 99%
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“…While the indenter tip is often assumed in the literature 2 to be completely rigid, the use of a deformable, purely elastic material model is justified by introducing a more realistic tip deformation (having impact on the tip contact area); the increase in model complexity is negligible. It was even shown by Mahdavi et al 32 that the deviations introduced by the usage of an “equivalent rigid indenter approximation are by no means negligible for practical reason ” . 32 The power law material model of the indented body is described by the stress–strain relationships: where E is the elastic modulus, the yield stress, the total effective strain, the plastic strain, and n the strain-hardening exponent.…”
Section: Methodsmentioning
confidence: 99%
“…It was even shown by Mahdavi et al 32 that the deviations introduced by the usage of an “equivalent rigid indenter approximation are by no means negligible for practical reason ” . 32 The power law material model of the indented body is described by the stress–strain relationships: where E is the elastic modulus, the yield stress, the total effective strain, the plastic strain, and n the strain-hardening exponent. The material model was implemented into the FE simulation using a Fortran-based material model subroutine (UMAT) by Martínez-Pañeda et al 33 …”
Section: Methodsmentioning
confidence: 99%