Ultrasonic characterization of functionally gradient materials with leaky Rayleigh wave

Journal Article · Thu Dec 02 04:00:00 EST 1999 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1302034· OSTI ID:21207676

Kawashima, Koichiro; Takenouchi, Naoki ^[1]; Awaji, Hideo; Nishikawa, Tadahiro ^[2]

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1. Department of Mechanical Engineering, Nagoya Institute of Technology, Nagoya, 466-8555 (Japan)
2. Department of Materials Science and Engineering, Nagoya Institute of Technology, Nagoya, 466-8555 (Japan)

Young's modulus of functionally gradient Al{sub 2}O{sub 3}/Ni ceramics, which was formed by centrifugal casting and has gradient of the elastic properties along a particular direction on the surface, is estimated by velocity measurement of the leaky Rayleigh and longitudinal waves. Those velocities were measured every 1mm with a line focused PVDF transducer, of which central frequency, focal length and width are 36MHz, 5mm and 8mm. Thus measured Young's modulus varies from 370GPa (Al{sub 2}O{sub 3} rich side) to 200GPa (Ni rich side)

• OSTI ID: 21207676
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 497; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
CERAMICS
ELASTICITY
INTERFACES
NICKEL
ORGANIC FLUORINE COMPOUNDS
POLYVINYLS
RAYLEIGH WAVES
SOUND WAVES
SURFACES
TRANSDUCERS
ULTRASONIC TESTING
VELOCITY
YOUNG MODULUS