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Defect sizing in ceramic materials by high-frequency ultrasound techniques

: Netzelmann, U.; Stolz, H.; Arnold, W.; Giunta, G.

Yu, W.; Benli, G.:
Acoustical Imaging. Vol.20
New York/N.Y.: Plenum Press, 1993 (Acoustical imaging 20)
International Symposium on Acoustical Imaging <20, 1992, Nanjing>
Conference Paper
Fraunhofer IZFP ()
ceramic; defect sizing; Fehlergrößenbestimmung; Keramik; Ultraschalltechnik

Determination of defect sizes of small pores or inclusions in engineering ceramics is a requirement for the prediction of component strength and reliability. Many authors have developed experimental procedures and processing algorithms for sizing defects in the Rayleigh and resonance regime of acoustical scattering. In this work, we have tested some common techniques for defect sizing on small inclusions in SiC, SiSiC, and Al2O3 ceramics with emphasis on considering experimental limitations. Different techniques have been applied to correlate the nondestructive results with the results of other nondestructive and destructive techniques.