| Presentation | 2005/9/22 Investigation of longitudinal acoustic properties measurements using solid reference specimens with relatively thick specimen layer in UHF range Hiroyuki ODAGAWA, Mototaka ARAKARA, Junichi KUSHIBIKI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We developed a method of measuring UHF-range longitudinal acoustic properties of both solid specimens and liquid specimens by a plane-wave ultrasonic material characterization system, in which the liquid coupler or liquid employed with a thickness of less than 1μm. In order to obtain an accurate thickness of the liquid layer, we measured a dip-frequency, where a reflection coefficient at the thin liquid layer became minimum value. In previous experiments, we used the thickness of λ_d/2 (λ_d : wavelength of ultrasonic wave in the thin liquid layer at a frequency of f_d which is in a measurement frequency band). In this condition, only one dip existed in the measurement frequency band. However, when we want to measure a viscous specimen or biological tissue, and when we want to measure in high frequency, it would be difficult to make the layer thin. In this paper, we investigated a measurement using a relatively thick liquid layers. In this case, several dip-frequencies will exist in the measurement frequency band. Our calculation results show that we can apply this measurement to the thicker liquid layer successfully. This method has a prospect that it can apply to various materials and high frequency range. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Plane-Wave Ultrasonic Material Characterization System / Solid Reference Specimen / Thin Layer Specimen / Acousticc Wave Velocity / Propagation Attenuation |
| Paper # | US2005-43 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2005/9/22(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Investigation of longitudinal acoustic properties measurements using solid reference specimens with relatively thick specimen layer in UHF range |
| Sub Title (in English) | |
| Keyword(1) | Plane-Wave Ultrasonic Material Characterization System |
| Keyword(2) | Solid Reference Specimen |
| Keyword(3) | Thin Layer Specimen |
| Keyword(4) | Acousticc Wave Velocity |
| Keyword(5) | Propagation Attenuation |
| 1st Author's Name | Hiroyuki ODAGAWA |
| 1st Author's Affiliation | Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Mototaka ARAKARA |
| 2nd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Junichi KUSHIBIKI |
| 3rd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| Date | 2005/9/22 |
| Paper # | US2005-43 |
| Volume (vol) | vol.105 |
| Number (no) | 312 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |