| Project/Area Number |
16K14108
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 音響共鳴現象 / 環境モニタリング / 気体種別 / 温度 / 圧力 |
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| Outline of Final Research Achievements |
With utilizing the frequency dependence of the reflection coefficient of sound reflected at a thin layer, a technique to accurately determine the acoustic impedance of the outer environment contacted with the layer has been proposed. Furthermore, it has been verified that the changes in the temperature or the pressure of the outer environment such as the liquid or gas are sensitively detected by the proposed technique. The reflection plate having thin layer for observing the acoustic resonance phenomenon at the plate/outer environment interface was fabricated, and the frequency characteristics of the echo reflected at the plate/outer environment interface were confirmed to be sensitively changed depending on the temperature of the outer environment. The pressure of gas was also considered to be sensitively monitored by the proposed technique. Finally, a sensor for sensitively monitoring the outer environment was fabricated, and its usefulness was confirmed.
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