Ultrasonic Porosity Estimation of Low-Porosity Ceramic Samples

We report on efforts to extend the applicability of an airborne ultrasonic pulse-reflection (UPR) method towards lower porosities. UPR is a method that has been used successfully to estimate porosity and tortuosity of high porosity foams. UPR measures acoustical reflectivity of a target surface at t...

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Bibliographic Details
Main Authors: Eskelinen, J., Hoffren, H., Kohout, T., Pesonen, L. J., Haeggstroem, E., Helsinki Institute of Physics, PO Box 64, FIN-00014
Format: Conference Proceeding
Language:English
Subjects:
APPROXIMATIONS
BOUNDARY CONDITIONS
CERAMICS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DISTRIBUTION
FLUIDS
FOAMS
INCIDENCE ANGLE
POROSITY
PULSES
REFLECTION
REFLECTIVITY
SURFACES
ULTRASONIC TESTING
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Summary:We report on efforts to extend the applicability of an airborne ultrasonic pulse-reflection (UPR) method towards lower porosities. UPR is a method that has been used successfully to estimate porosity and tortuosity of high porosity foams. UPR measures acoustical reflectivity of a target surface at two or more incidence angles. We used ceramic samples to evaluate the feasibility of extending the UPR range into low porosities (
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2718118