Propagating properties of surface wave in Sol-Gel transition of tungstic acid

Kazuhiro Motonaga; Hirotaka Okabe; Kazuhiro Hara Matsushige; Kazumi Matsushige

doi:10.1143/JJAP.33.2905

Propagating properties of surface wave in Sol-Gel transition of tungstic acid

Kazuhiro Motonaga, Hirotaka Okabe, Kazuhiro Hara Matsushige, Kazumi Matsushige

Applied Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The gelation process of tungstic acid was investigated by observing surface waves at two points on a sample surface. We used a deflected-light detection system, in which the surface waves were excited with a PZT bimorph vibrator. From the propagation time (δt) between the two isolated measuring points, surface wave velocity was calculated. We also estimated attenuation of the surface wave from the ratio of the observed amplitudes at the measuring points. Around the gelation time (t_g), which was determined by the tilting test, a marked increase in the surface wave velocity was observed. The attenuation coefficient showed frequency dispersion in the frequency range from 20 to 60 Hz, which reached a maximum value around t_g.

Original language	English
Pages (from-to)	2905-2907
Number of pages	3
Journal	Japanese journal of applied physics
Volume	33
Issue number	5S
DOIs	https://doi.org/10.1143/JJAP.33.2905
Publication status	Published - May 1994

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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abstract = "The gelation process of tungstic acid was investigated by observing surface waves at two points on a sample surface. We used a deflected-light detection system, in which the surface waves were excited with a PZT bimorph vibrator. From the propagation time (δt) between the two isolated measuring points, surface wave velocity was calculated. We also estimated attenuation of the surface wave from the ratio of the observed amplitudes at the measuring points. Around the gelation time (tg), which was determined by the tilting test, a marked increase in the surface wave velocity was observed. The attenuation coefficient showed frequency dispersion in the frequency range from 20 to 60 Hz, which reached a maximum value around tg.",

author = "Kazuhiro Motonaga and Hirotaka Okabe and Matsushige, {Kazuhiro Hara} and Kazumi Matsushige",

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AU - Motonaga, Kazuhiro

AU - Okabe, Hirotaka

AU - Matsushige, Kazuhiro Hara

AU - Matsushige, Kazumi

PY - 1994/5

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AB - The gelation process of tungstic acid was investigated by observing surface waves at two points on a sample surface. We used a deflected-light detection system, in which the surface waves were excited with a PZT bimorph vibrator. From the propagation time (δt) between the two isolated measuring points, surface wave velocity was calculated. We also estimated attenuation of the surface wave from the ratio of the observed amplitudes at the measuring points. Around the gelation time (tg), which was determined by the tilting test, a marked increase in the surface wave velocity was observed. The attenuation coefficient showed frequency dispersion in the frequency range from 20 to 60 Hz, which reached a maximum value around tg.

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Propagating properties of surface wave in Sol-Gel transition of tungstic acid

Abstract

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