| Presentation | 2002/9/13 A method of determining acoustical physical constants for Class 32 crystals by the LFB/PW ultrasonic material characterization system Masanori Ohtagawa, Izumi Takanaga, Jun-ichi Kushibiki, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We developed a new method of determining acoustical physical constants for Class 32 crystals using the line-focus-beam (LFB)/plane-wave (PW) ultrasonic material characterization system. Constants can be determined by measuring the velocities of longitudinal and shear waves and of leaky surface acoustic waves (LSAWs) propagating on the water-loaded surfaces for three principal X-, Y-, and Z-cut plate specimens, in addition to measurements of dielectric constants and density. Numerical simulations were carried out using synthetic α-quartz whose precise constants were already obtained, in order to choose proper modes and propagation directions for the accurate determination. This method was successfully demonstrated for natural a-quartz, having a good agreement within 0.39 m/s between measured and calculated LSAW velocities. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | acoustical physical constants / Class 32 crystals / synthetic α-quartz / natural α-quartz / LFB/PW ultrasonic material characterization system / bulk wave velocity / LSAW velocity |
| Paper # | US2002-62 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2002/9/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| 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) | A method of determining acoustical physical constants for Class 32 crystals by the LFB/PW ultrasonic material characterization system |
| Sub Title (in English) | |
| Keyword(1) | acoustical physical constants |
| Keyword(2) | Class 32 crystals |
| Keyword(3) | synthetic α-quartz |
| Keyword(4) | natural α-quartz |
| Keyword(5) | LFB/PW ultrasonic material characterization system |
| Keyword(6) | bulk wave velocity |
| Keyword(7) | LSAW velocity |
| 1st Author's Name | Masanori Ohtagawa |
| 1st Author's Affiliation | Graduate School of Engineering, Tohoku University() |
| 2nd Author's Name | Izumi Takanaga |
| 2nd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| 3rd Author's Name | Jun-ichi Kushibiki |
| 3rd Author's Affiliation | Graduate School of Engineering, Tohoku University |
| Date | 2002/9/13 |
| Paper # | US2002-62 |
| Volume (vol) | vol.102 |
| Number (no) | 308 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |