Determination of the mechanical properties of amorphous materials through instrumented nanoindentation

Rodriguez, M. and Molina Aldareguía, Jon M. and González Martínez, Carlos Daniel and Llorca Martinez, Francisco Javier (2012). Determination of the mechanical properties of amorphous materials through instrumented nanoindentation. "Acta Materialia", v. 60 (n. 9); pp. 3953-3964. ISSN 1359-6454. https://doi.org/10.1016/j.actamat.2012.03.027.

Description

Title: Determination of the mechanical properties of amorphous materials through instrumented nanoindentation
Author/s:
  • Rodriguez, M.
  • Molina Aldareguía, Jon M.
  • González Martínez, Carlos Daniel
  • Llorca Martinez, Francisco Javier
Item Type: Article
Título de Revista/Publicación: Acta Materialia
Date: May 2012
ISSN: 1359-6454
Volume: 60
Subjects:
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A novel methodology based on instrumented indentation is developed to determine the mechanical properties of amorphous materials which present cohesive-frictional behaviour. The approach is based on the concept of a universal hardness equation, which results from the assumption of a characteristic indentation pressure proportional to the hardness. The actual universal hardness equation is obtained from a detailed finite element analysis of the process of sharp indentation for a very wide range of material properties, and the inverse problem (i.e. how to extract the elastic modulus, the compressive yield strength and the friction angle) from instrumented indentation is solved. The applicability and limitations of the novel approach are highlighted. Finally, the model is validated against experimental data in metallic and ceramic glasses as well as polymers, covering a wide range of amorphous materials in terms of elastic modulus, yield strength and friction angle.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7213371MAAXIMUSUnspecifiedMore Affordable Aircraft structure through eXtended, Integrated, and Mature nUmerical Sizing

More information

Item ID: 15736
DC Identifier: http://oa.upm.es/15736/
OAI Identifier: oai:oa.upm.es:15736
DOI: 10.1016/j.actamat.2012.03.027
Official URL: http://www.sciencedirect.com/science/article/pii/S1359645412002170
Deposited by: Memoria Investigacion
Deposited on: 22 Oct 2013 09:32
Last Modified: 31 Oct 2014 11:30
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