Maitra, A K and Phani, Kalyan Kumar (1994) Ultrasonic evaluation of elastic parameters of sintered powder compacts. Journal of Materials Science, 29 (17). pp. 4415-4419. ISSN 0022-2461

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The variation of elastic moduli, M, of sintered powder compacts with porosity, p, has been analysed in terms of an equation M = M(o) (1-p)n, where M(o) is the elastic modulus of non-porous material and n is a constant. The variation of ultrasonic velocities has also been described in terms of a similar equation derived from the relations given by physical acoustics theory. It has been shown that the parameter n is related to a stress concentration factor around pores in the material and is dependent on pore geometry and its orientation in the material. The observed variation in moduli and velocities with porosity has been compared with the theoretically predicted values based on self-consistent oblate spheroidal theory.

Item Type: Article
Subjects: Microstructure and Characterization
Depositing User: Bidhan Chaudhuri
Date Deposited: 08 Aug 2013 13:24
Last Modified: 20 Mar 2016 13:51

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