Published March 21, 2007 | Version v1
Journal article Metadata-only

Ultrasonic Porosity Estimation of Low-Porosity Ceramic Samples

Creators

  • 1. Electronics Research Unit, Department of Physical Sciences, University of Helsinki, P.O. Box 64 FIN-00014 (Finland)
  • 2. Division of Geophysics, Department of Physical Sciences, University of Helsinki, P.O. Box 64 FIN-00014 (Finland)
  • 3. Helsinki Institute of Physics, PO Box 64, FIN-00014 (Finland)

Description

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 (<35%). The validity of UPR estimates depends on pore size distribution and probing frequency as predicted by the theoretical boundary conditions of the used equivalent fluid model under the high-frequency approximation

Additional details

Identifiers

DOI
10.1063/1.2718118;

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
894
Journal Issue
1
Journal Page Range
p. 1320-1327
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
Conference on review of progress in quantitative nondestructive evaluation
Dates
30 Jul - 4 Aug 2006
Place
Portland, OR (United States)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39071946
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
APPROXIMATIONS; BOUNDARY CONDITIONS; CERAMICS; DISTRIBUTION; FLUIDS; FOAMS; INCIDENCE ANGLE; POROSITY; PULSES; REFLECTION; REFLECTIVITY; SURFACES; ULTRASONIC TESTING
Descriptors DEC
ACOUSTIC TESTING; CALCULATION METHODS; COLLOIDS; DISPERSIONS; MATERIALS TESTING; NONDESTRUCTIVE TESTING; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; SURFACE PROPERTIES; TESTING

Optional Information

Notes
(c) 2007 American Institute of Physics