Mukhopadhyay, A K and Basu, Debabrata and Mukherjee, S and Phani, Kalyan Kumar (1996) Ultrasonic velocity measurement for characterisation of porosity in sintered ceramics and metals. In: Trends In NDE Science and Technology - Proceedings of the 14th World Conference On Ndt (14th Wcndt), Vols 1-5 , Dec 08-13, 1996 , New Delhi, India .

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Abstract

Ultrasonic velocity measurement is an attractive technique for porosity characterisation of sintered ceramics and metals although, the use of a conventional linear relationship between the ultrasonic velocity and porosity often leads to contradictory results. Therefore, a mean value premise model is adapted where, each irregular pore shape of the microstructure is replaced by a spheroid having the same volume and surface area as those of the original pore, to calculate the ultrasonic velocity using the self consistent oblate spheroidal inclusion theory. The predicted trends bear excellent match with the experimental data on sintered SiC,ZTA ceramics and iron powder compacts.

Item Type:	Conference or Workshop Item (Paper)
Additional Information:	14th World Conference on NDT - Trends in NDE Science and Technology (14th WCNDT), NEW DELHI, INDIA, DEC 08-13, 1996
Subjects:	Microstructure and Characterization Engineering Materials
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	30 Jul 2012 10:27
Last Modified:	30 Jul 2012 10:27
URI:	http://cgcri.csircentral.net/id/eprint/1704

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