Spalling uniaxial strength of Al2O3 at high strain rates

Pérez Martín, Maria Jesus; Erice Echávarri, Borja; Cendón Franco, David Ángel y 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.


Título: Spalling uniaxial strength of Al2O3 at high strain rates
  • Pérez Martín, Maria Jesus
  • Erice Echávarri, Borja
  • Cendón Franco, David Ángel
  • Gálvez Díaz-Rubio, Francisco
Tipo de Documento: Artículo
Título de Revista/Publicación: The European Physical Journal Special Topics
Fecha: Mayo 2012
Volumen: 206
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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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.

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ID de Registro: 15888
Identificador DC:
Identificador OAI:
Identificador DOI: 10.1140/epjst/e2012-01593-3
URL Oficial:
Depositado por: Memoria Investigacion
Depositado el: 25 Oct 2013 12:15
Ultima Modificación: 24 Sep 2018 10:58
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