Spalling uniaxial strength of Al2O3 at high strain rates

Pérez Martín, Maria Jesus and Erice Echávarri, Borja and Cendón Franco, David Ángel and Gálvez Díaz-Rubio, Francisco (2012). Spalling uniaxial strength of Al2O3 at high strain rates. "The European Physical Journal Special Topics", v. 206 (n. 1); pp. 117-128. ISSN 1951-6355. https://doi.org/10.1140/epjst/e2012-01593-3.

Description

Title: Spalling uniaxial strength of Al2O3 at high strain rates
Author/s:
  • Pérez Martín, Maria Jesus
  • Erice Echávarri, Borja
  • Cendón Franco, David Ángel
  • Gálvez Díaz-Rubio, Francisco
Item Type: Article
Título de Revista/Publicación: The European Physical Journal Special Topics
Date: May 2012
Volume: 206
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

In this article research into the uniaxial tensile strength of Al2O3 monolithic ceramic is presented. The experimental procedure of the spalling of long bars is investigated from different approaches. This method is used to obtain the tensile strength at high strain rates under uniaxial conditions. Different methodologies proposed by several authors are used to obtain the tensile strength. The hypotheses needed for the experimental set-up are also checked, and the requirements of the set-up and the variables are also studied by means of numerical simulations. The research shows that the shape of the projectile is crucial to achieve successfully tests results. An experimental campaign has been carried out including high speed video and a digital image correlation system to obtain the tensile strength of alumina. Finally, a comparison of the test results provided by three different methods proposed by different authors is presented. The tensile strength obtained from the three such methods on the same specimens provides contrasting results. Mean values vary from one method to another but the trends are similar for two of the methods. The third method gives less scatter, though the mean values obtained are lower and do not follow the same trend as the other methods for the different specimens.

More information

Item ID: 15888
DC Identifier: http://oa.upm.es/15888/
OAI Identifier: oai:oa.upm.es:15888
DOI: 10.1140/epjst/e2012-01593-3
Official URL: http://link.springer.com/article/10.1140%2Fepjst%2Fe2012-01593-3
Deposited by: Memoria Investigacion
Deposited on: 25 Oct 2013 12:15
Last Modified: 24 Sep 2018 10:58
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