Ultrasonic wave propagation characteristics of green ceramics
Propagation of ultrasonic waves in green (unfired) ceramics is studied, and the effectiveness of ultrasonic methods for nondestructive evaluation is assessed. The objective is to obtain useful information on defects, cracking, delaminations, agglomerates, inclusions, regions of high porosity, and anisotropy. Conventional ultrasonic techniques are difficult to apply to flaw detection in green ceramics because of the high attenuation, fragility, and couplant-absorbing properties of these materials. However, velocity, attenuation, and spectral data were obtained with pressure-coupled transducers and provided useful information related to density variations and the presence of agglomerates and elastic anisotropy.
- Research Organization:
- Argonne National Lab., IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5897803
- Journal Information:
- Am. Ceram. Soc. Bull.; (United States), Journal Name: Am. Ceram. Soc. Bull.; (United States) Vol. 63:12; ISSN ACSBA
- Country of Publication:
- United States
- Language:
- English
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360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ACOUSTIC TESTING
ANISOTROPY
CERAMICS
CRACKS
DATA
DEFECTS
DENSITY
EXPERIMENTAL DATA
INFORMATION
MATERIALS TESTING
NONDESTRUCTIVE TESTING
NUMERICAL DATA
PHYSICAL PROPERTIES
SPECTRA
TESTING
TRANSMISSION
ULTRASONIC TESTING
VELOCITY
WAVE PROPAGATION