| Presentation | 1995/9/22 High-resolution determination of transit time of ultrasound in a thin layer by deleting the characteristics of ultrasonic transducer using cascade matrices Tomohisa Kimura, Hiroshi Kanai, Noriyoshi Chubachi, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper we propose a new method for removing the characteristic of the piezoelectric transducer from the received signal in the pulse-echo method so that the time resolution in the determination of transit time of ultrasound in a thin layer is increased. The total characteristic of the pulse-echo system is described by cascade of distributed-constant systems for the ultrasonic transducer, matching layer, and acoustic medium. The input impedance is estimated by the inverse matrix of the cascade system and the voltage signal at the electrical port. From the inverse Fourier transform of resultant input impedance, the transit time in a thin layer object is accurately determined with high time resolution. The principle of the method is confirmed by simulation experiments and experiments using a water tank. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | piezoelectric transducer / two-port network / cascade matrix / acoustic input impedance / impulse train |
| Paper # | US95-51 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 1995/9/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Chair | |
| Vice Chair | |
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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) | High-resolution determination of transit time of ultrasound in a thin layer by deleting the characteristics of ultrasonic transducer using cascade matrices |
| Sub Title (in English) | |
| Keyword(1) | piezoelectric transducer |
| Keyword(2) | two-port network |
| Keyword(3) | cascade matrix |
| Keyword(4) | acoustic input impedance |
| Keyword(5) | impulse train |
| 1st Author's Name | Tomohisa Kimura |
| 1st Author's Affiliation | Department of Electrical Engineering, Faculty of Engineering, Tohoku University() |
| 2nd Author's Name | Hiroshi Kanai |
| 2nd Author's Affiliation | Department of Electrical Engineering, Faculty of Engineering, Tohoku University |
| 3rd Author's Name | Noriyoshi Chubachi |
| 3rd Author's Affiliation | Department of Electrical Engineering, Faculty of Engineering, Tohoku University |
| Date | 1995/9/22 |
| Paper # | US95-51 |
| Volume (vol) | vol.95 |
| Number (no) | 252 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |