COMPRESSIVE MECHANICAL BEHAVIOUR AND ELASTIC PROPERTIES OF A HIGHLY POROUS ALUMINA FOAM

  • BUNCIANU DOREL
    Department of Mechanics and Strength of Materials, Politehnica University of Timisoara, 1 Mihai Viteazu Avenue, 300222 Timisoara, Romania
  • MARSAVINA LIVIU
    Department of Mechanics and Strength of Materials, Politehnica University of Timisoara, 1 Mihai Viteazu Avenue, 300222 Timisoara, Romania
  • TESSIER-DOYEN NICOLAS
    Laboratoire SPCTS, Université de Limoges, 12 rue Atlantis, 87068 Limoges, France
  • ABSI JOSEPH
    Department of Mechanics and Strength of Materials, Politehnica University of Timisoara, 1 Mihai Viteazu Avenue, 300222 Timisoara, Romania
  • SERBAN DAN ANDREI
    Laboratoire SPCTS, Université de Limoges, 12 rue Atlantis, 87068 Limoges, France
  • SINESCU COSMIN
    Faculty of Dental Medicine, Victor Babes University of Medicine and Pharmacy of Timisoara, 2 Piata Eftimie Murgu, 300222 Timisoara, Romania

Abstract

The aim of this work consists in the charaterization of mechnical properties (compressive law of behaviour and elastic properties) of a ceramic foam whose pore volume fraction is about 87%. Compressive behaviour is similar to these of cellular materials (elastic domain, plateau phase and densification successively). Elastic properties determined by 3 different methods (i-from the law of behaviour, ii-by pulse echography technique and iii-by impulse excitation vibration) have shown that the mean value of overall Young’s modulus is in agreement with Ashby’s models of prediction considering the interconnectivity of pores in the microstructure of tested materials.

Cuvinte cheie

ceramic foams elastic properties compressive behaviour interconnected pores