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Analytical model for nanoscale viscoelastic properties characterization using dynamic nanoindentation

Yuya, Philip A. ; Patel, Nimitt G.

Philosophical magazine (Abingdon, England), 2014-08, Vol.94 (22), p.2505-2519 [Periódico revisado por pares]

Abingdon: Taylor & Francis

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Título:
Analytical model for nanoscale viscoelastic properties characterization using dynamic nanoindentation
Autor: Yuya, Philip A. ; Patel, Nimitt G.
Assuntos: Applied sciences ; Condensed matter: structure, mechanical and thermal properties ; Contact ; dynamic nanoindentation ; Dynamic tests ; Dynamics ; Elasticity, elastic constants ; Elastomers ; Exact sciences and technology ; generalized Maxwell model ; Mechanical and acoustical properties of condensed matter ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; Mechanical properties of solids ; Metals. Metallurgy ; Nanoindentation ; Nanostructure ; Physics ; Viscoelastic materials ; Viscoelasticity
É parte de: Philosophical magazine (Abingdon, England), 2014-08, Vol.94 (22), p.2505-2519
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: In the last few decades, nanoindentation has gained widespread acceptance as a technique for materials properties characterization at micron and submicron length scales. Accurate and precise characterization of material properties with a nanoindenter is critically dependent on the ability to correctly model the response of the test equipment in contact with the material. In dynamic nanoindention analysis, a simple Kelvin-Voigt model is commonly used to capture the viscoelastic response. However, this model oversimplifies the response of real viscoelastic materials such as polymers. A model is developed that captures the dynamic nanoindentation response of a viscoelastic material. Indenter tip-sample contact forces are modelled using a generalized Maxwell model. The results on a silicon elastomer were analysed using conventional two element Kelvin-Voigt model and contrasted to analysis done using the Maxwell model. The results show that conventional Kelvin-Voigt model overestimates the storage modulus of the silicone elastomer by ~30%. Maxwell model represents a significant improvement in capturing the viscoelastic material behaviour over the Voigt model.
Editor: Abingdon: Taylor & Francis
Idioma: Inglês

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Analytical model for nanoscale viscoelastic properties characterization using dynamic nanoindentation

Yuya, Philip A. ; Patel, Nimitt G.

Abingdon: Taylor & Francis

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