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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 宋家驥(Chia-Chi Sung) | |
dc.contributor.author | Guan-Yu Lin | en |
dc.contributor.author | 林冠宇 | zh_TW |
dc.date.accessioned | 2021-06-16T06:52:50Z | - |
dc.date.available | 2019-07-29 | |
dc.date.copyright | 2014-07-29 | |
dc.date.issued | 2014 | |
dc.date.submitted | 2014-07-22 | |
dc.identifier.citation | 1. Mason, W.P., Electromechanical transducers and wave filters. 1946: Van Nostrand Reinhold.
2. Redwood, M., Transient performance of a piezoelectric transducer. The Journal of the Acoustical Society of America, 2005. 33(4): p. 527-536. 3. Krimholtz, R., D.A. Leedom, and G.L. Matthaei, New equivalent circuits for elementary piezoelectric transducers. Electronics Letters, 1970. 6(13): p. 398-399. 4. Desilets, C.S., J.D. Fraser, and G.S. Kino, The design of efficient broad-band piezoelectric transducers. Sonics and Ultrasonics, IEEE Transactions on, 1978. 25(3): p. 115-125. 5. Souquet, J., P. Defranould, and J. Desbois, Design of low-loss wide-band ultrasonic transducers for noninvasive medical application. Sonics and Ultrasonics, IEEE Transactions on, 1979. 26(2): p. 75-80. 6. Kline, R.A., Measurement of attenuation and dispersion using an ultrasonic spectroscopy technique. The Journal of the Acoustical Society of America, 1984. 76(2): p. 498-504. 7. Persson, H. and C. Hertz, Acoustic impedance matching of medical ultrasound transducers. Ultrasonics, 1985. 23(2): p. 83-89. 8. Gudra, T. and K.J. Opieliński, Influence of acoustic impedance of multilayer acoustic systems on the transfer function of ultrasonic airborne transducers. Ultrasonics, 2002. 40(1): p. 457-463. 9. Opieliński, K.J. and T. Gudra, Influence of the thickness of multilayer matching systems on the transfer function of ultrasonic airborne transducer. Ultrasonics, 2002. 40(1): p. 465-469. 10. Zhu, J., Optimization of matching layer design for medical ultrasonic transducer. 2008: ProQuest. 11. Zhou, Q., et al., Alumina/epoxy nanocomposite matching layers for high-frequency ultrasound transducer application. Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on, 2009. 56(1): p. 213-219. 12. Tiefensee, F., et al., Nanocomposite cerium oxide polymer matching layers with adjustable acoustic impedance between 4 MRayl and 7 MRayl. Ultrasonics, 2010. 50(3): p. 363-366. 13. 王少波, 高频换能器匹配层的制备和特性研究. 2011, 哈尔滨工业大学. 14. 張鵬, Indoor Position Detection by CDMA-like Method on Modulated Ultrasonic Wave, Master dissertation. 2008. 15. Christensen, D.A., Ultrasonic Bioinstrumentations. 1988. 16. 吳朗, 電子陶瓷: 壓電陶瓷. 1994: 全欣. 17. 朱雅雯, 超音波壓電換能器多層匹配結構之研析. 臺灣大學工程科學及海洋工程學研究所學位論文, 2005: p. 1-87. 18. 林明鋒, 微機電共振器之製作與分析. 臺灣大學工程科學及海洋工程學研究所學位論文, 2007: p. 1-94. 19. 蔣源峰, 體聲波共振器與濾波器之研究. 2004. 20. Dingguo, X., et al. Measurement of ultrasonic transducer sensitivity. in Mechatronics and Automation (ICMA), 2012 International Conference on. 2012. 21. Lopez-Sanchez, A.L. and L. Schmerr, Determination of an ultrasonic transducer's sensitivity and impedance in a pulse-echo setup. Ultrasonics, Ferroelectrics and Frequency Control, IEEE Transactions on, 2006. 53(11): p. 2101-2112. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/57587 | - |
dc.description.abstract | 本文重點在探討超音波換能器中與介質聲學阻抗的匹配層。利用壓電片波動方程式與梅森等效電路當作設計概念,推導出壓電換能器的阻抗矩陣,為了簡化阻抗矩陣求解時複雜的邊界條件的計算,將聲波能量傳遞的觀念來分析換能器內部結構,進而推導出換能器的傳輸矩陣,並用來模擬換能器結構向內外傳遞的聲波能量,以傳輸矩陣模擬換能器輸出聲波訊號,可將其等同為換能器的靈敏度,討論不同厚度的匹配層對於結構振動的影響。
本研究透過模擬來找到換能器中不同匹配層厚度對轉換函數影響的趨勢;接著在實驗室中自行製造換能器,利用脈衝回波系統量測換能器的靈敏度,找出換能器中不同匹配層厚度的靈敏度趨勢,結果顯示,模擬與實作的趨勢上相近,但能量的峰值上有些誤差,再改善製作流程與排除壓電片本身靈敏度不同等原因,重新製造三組不同匹配層厚度的換能器,並重新比較其趨勢,最終模擬與實驗的趨勢吻合。 在硬體設備上利用固定機構將換能器與反射板的距離固定,讓所有換能器量測時都位在同一個水平上,在配合脈衝收發器與數位示波器進行量測,以確保實驗的可信度。此外還製作隔離發射訊號與接收訊號的電路,避免發射與接收的訊號互相干擾,造成量測能量上的誤差。 | zh_TW |
dc.description.abstract | The aim of this paper is to explore the sensitivity of ultrasonic transducer front matching layer using the piezoelectric wave equation and mason equivalent circuit as design conceptions. First, we introduce the structure of the ultrasonic piezoelectric transducer and the factors that impact the performance of the transducer. Through the wave equation, the impedance matrix of piezoelectric transducer is derived. In reproduction order to simplify the complex boundary condition on impedance matrix, using the concept of the acoustic energy transmitted to analyze the internal structure of the transducer. Then, the transfer matrix of transducer is derived. It can simulate acoustic signal transmission matrix transducer which are transferred by layers of the structure inner and outer to affect transducer transfer function. So, we can regard the transfer function as the sensitivity of transducer.
This study found the tendency in different thickness of matching layer on impact of transfer function through the simulation. Using the pulse-echo system to measure the sensitivity of each transducer, and also find their tendency. The result shows the tendency of simulation is similar to experiment, but the peak value of sensitivity is not match. Also trying to improve the process to reproduce the different thickness of transducers and compare with each tendency. Finally, both are match. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T06:52:50Z (GMT). No. of bitstreams: 1 ntu-103-R01525091-1.pdf: 2995331 bytes, checksum: f3c5d513c6753f4e11730b209af7084d (MD5) Previous issue date: 2014 | en |
dc.description.tableofcontents | 致謝 I
中文摘要 II ABSTRACT III 目錄 IV 圖目錄 VI 表目錄 IX 符號介紹 X 第1章 緒論 1 1.1 研究動機與目的 1 1.2 文獻回顧 1 1.3 論文架構介紹 5 第2章 背景理論 6 2.1 超音波理論 6 2.1.1 聲波方程式 7 2.1.2 水中聲速 8 2.2 壓電原理 9 2.2.1 壓電效應 9 2.2.2 壓電方程式 10 2.2.3 壓電材料 12 2.2.4 壓電材料參數 14 2.3 超音波換能器結構 15 2.3.1 壓電陶瓷片 16 2.3.2 背膠層 17 2.3.3 匹配層 18 2.4 超音波換能器的聲場 20 第3章 換能器傳輸矩陣法 22 3.1 壓電片波動方程式 22 3.2 換能器阻抗矩陣 24 3.3 換能器傳輸矩陣法 26 第4章 實驗架構與量測方法 32 4.1 實驗設備 32 4.2 換能器製作流程 36 4.3 換能器靈敏度量測 37 4.2.1 發射原理 38 4.2.2 接收原理 39 4.2.3 換能器靈敏度量測架構 42 第5章 結果與討論 44 5.1 不同厚度匹配層轉換函數的影響 44 5.2 不同厚度匹配層對換能器靈敏度的影響 49 第6章 結論 63 參考文獻 64 附錄 66 | |
dc.language.iso | zh-TW | |
dc.title | 超音波換能器匹配層之研析 | zh_TW |
dc.title | Analysis of Ultrasonic Transducer Matching Layer | en |
dc.type | Thesis | |
dc.date.schoolyear | 102-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 王昭男(Chao-Nan Wang),羅如燕(Ru-Yen Ro),林益煌(Yih-Hwang Lin) | |
dc.subject.keyword | 超音波換能器,匹配層,阻抗矩陣,傳輸矩陣,靈敏度, | zh_TW |
dc.subject.keyword | Ultrasonic transducer,matching layer,impedance matrix,transfer matrix,sensitivity, | en |
dc.relation.page | 72 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2014-07-22 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
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