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Holographic investigation into the mechanical behaviour of engineering ceramics
Author(s) -
Chirico G. Di,
Rossi R.
Publication year - 1993
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1111/j.1475-1305.1993.tb00839.x
Subject(s) - ceramic , materials science , modulus , poisson's ratio , holographic interferometry , holography , interferometry , sensitivity (control systems) , composite material , poisson distribution , structural engineering , optics , engineering , electronic engineering , mathematics , physics , statistics
The complex loading conditions to which a structural component is customarily subjected require a knowledge of the material responses to combined stresses, while almost all the data available for ceramic materials are obtained from uniaxial tests. It is necessary, therefore, to study the behaviour of engineering ceramics using specimens of proper shapes subjected to biaxial stresses and testing methods that enable high sensitivity monitoring and real time analysis of the surface strains. In this respect, an optical technique such as conjugate wave holographic interferometry gives satisfactory results. Characterisation tests are carried out on diametrically loaded discs in order to evaluate Young's modulus and Poisson's ratio of some classes of ceramic materials.