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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Richard, Fabrice
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Fracture toughness determination methods of WC-Co cemented carbide material at micro-scale from micro-bending method using nanoindentation
- 2023The effect of heat treatment on the mechanical behavior of an ASTM-F2063 nitinol stent intended for venous application
- 2022Simultaneous extraction of the elastic-plastic properties of a thin film and its substrate from an identifiability-based design of depth-sensing nanoindentation testing
- 2020RELATION BETWEEN HARDNESS OF (Ti, Al)N BASED MULTILAYERED COATINGS AND PERIODS OF THEIR STACKINGcitations
- 2020RELATION BETWEEN HARDNESS OF (Ti, Al)N BASED MULTILAYERED COATINGS AND PERIODS OF THEIR STACKINGcitations
- 2020Identifiability of single crystal plasticity parameters from residual topographies in Berkovich nanoindentation on FCC nickelcitations
- 2020RELATION BETWEEN HARDNESS OF MULTILAYERED (Ti, Al)N BASED COATINGS AND PERIODS OF THEIR STACKING
- 2020A new way to identify thin sheet behaviour : micro-in def
- 2020On the uniqueness of intrinsic viscoelastic properties of materials extracted from nanoindentation using FEMUcitations
- 2019Relation between hardness of multilayered (Ti,Al)N based coatings and periods of their stacking
- 2018Single crystal plasticity parameters identification from residual imprint topography after nano-indentation
- 2018A viscoelastoplastic stiffening model for plant fibre unidirectional reinforced composite behaviour under monotonic and cyclic tensile loading
- 2018Instrumented incremental sheet testing for material behavior extraction under very large strain : information richness of continuous force measurement
- 2018About Nonlinear Behavior of Unidirectional Plant Fibre Compositecitations
- 2017Numerical prediction of the forming limit diagrams for characterizing the thin sheet formability
- 2016Sensitivity of the residual topography to single crystal plasticity parameters in Berkovich nanoindentation on FCC nickel
- 2014Anisotropy and crystal plasticity analysis of a FCC nickel polycrystal by nanoindentation and numerical modeling
- 2014Microstructural and elasto-plastic material parameters identification by inverse finite elements method of Ti(1-x) AlxN (0 < x < 1 sputtered thin films from Berkovich nano-indentation experimentscitations
- 2013Influence of the initial grain size in single point incremental forming process for thin sheets metal and microparts: Experimental investigationscitations
- 2011Interprétation du module d'indentation dans le cas des matériaux anisotropes et/ou actifscitations
- 2006Effect of the residual stress on the determination through nanoindentation technique of the Young's modulus of W thin film deposit on Si02/Si substrate
Places of action
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article
On the uniqueness of intrinsic viscoelastic properties of materials extracted from nanoindentation using FEMU
Abstract
International audience ; Instrumented nanoindentation is widely used to extract the material properties from the measured force-displacement curves. In this work, the uniqueness/non-uniqueness of the intrinsic viscoelastic properties of materials determined by nanoindentation during load-unload tests is investigated. A four-parameter viscoelastic law with constant Poisson's ratio is used to model the mechanical behavior of a polymer material and a 2D-axisymetric Finite Element Model (FEM) is used to simulate the nanoindentation test. Firstly, a nanoindentation experimental triangular load-unload test is performed on a bulk sample of polypropylene (PP) with a Berkovich indenter tip at a depth rate of 1000 nm/min. The values of the four material parameters are estimated by the Finite Element Model Updating (FEMU). The numerical results can accurately fit the experimental data. However, several quasi-solutions are shown to exist. These load-unload data allow to identify only three viscoelastic parameters if the Poisson's ratio is known. Secondly, the effect of nanoindentation depth rate, loading type (triangular, trapezoidal, exponential, sinusoidal) and apex angle is numerically investigated using an identifiability index based on the conditioning of the inverse problem. We show a correlation between the identifiability index and the energy dissipated by the material during the tests. The extraction of all material parameters remains impossible using a single test. Finally, some combinations of several nanoindentation triangular tests and indenter tip angles are also investigated. We show that a dual nanoindentation technique (cube corner and Berkovich tips) with triangular load-unload tests is an interesting combination to reliably extract all the viscoelastic parameters, provided that plasticity is taken into account. This result illustrates the interest of using this numerical identifiability index to design nanoindentation experiments to ensure the robustness of the intrinsic viscoelastic properties extraction.