| Project/Area Number |
22760641
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Naval and maritime engineering
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| Research Institution | Kanagawa University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 海洋探査 / 機器 / 音響レンズ / 平面音響レンズ / フォノニッククリスタル / 水中映像取得 / 負の屈折率 / 弾性FDTD法 / フレキシブル音響レンズ / 平面形状レンズ / フォノニック結晶構造 / FDTD法 |
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| Research Abstract |
The final goal in this study, we develop the acoustic imaging system in Ocean using flexible acoustic lens constructed with phononic crystal structure. For the obtaining of basic properties of the planate acoustic lens, we produced the prototype of the planate lens constructed by stainless steel. In this study, we measured convergence field by planate acoustic lens in water tank. In addition, we simulated convergence field by planate acoustic lens using finite difference time domain(FDTD) method. As a result, we confirmed the lens effect of designed planate lens. Measurement result of focal distance and-3 dB beam width was almost good agreement with simulation result using FDTD method.
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