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研究生:林益聖
研究生(外文):Yi-Sheng Li
論文名稱:磁通轉換線圈於SQUID非破壞性檢測系統之應用與研發
論文名稱(外文):Application and Study on SQUID Nondestructive Evaluation by Transfer Coil
指導教授:洪振義洪振義引用關係羅正忠羅正忠引用關係
指導教授(外文):CYHongJeng-Jong Ro
學位類別:碩士
校院名稱:大葉大學
系所名稱:機電自動化研究所碩士班
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2007
畢業學年度:95
語文別:中文
論文頁數:55
中文關鍵詞:超導量子干涉元件非破壞檢測差動式渦電流探頭
外文關鍵詞:Superconducting Quantum Interference DeviceNon-destructive testingDifferential eddy current probe
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高溫超導量子干涉元件 SQUID ( Superconducting Quantum Interference Device)獨特的磁通與極高靈敏度特性,應用於差動式渦電流探頭來對金屬導體進行非破壞性檢測 (nondestructive evaluation)。
本實驗用SQUID作為系統的放大器,配合四極激發線圈與差動式感應作為探頭設計,找出探頭激發線圈、感應線圈與SQUID間的共振頻率,在靈敏度最佳化的情況下,設計一套完整的非破壞性檢測系統,其自行設計研發整套系統內容包括杜爾瓶(Dewar)、屏蔽桶(magnetically shielding box),與線圈的製作並且做一連串的特性量測和二維影像顯現。
為了改善傳統 SQUID 應用於NDE系統的實用性與便利性,我們將感應電流經由傳輸線傳回屏蔽桶內並讓二次激發線圈(input coil)產生磁場,讓SQUID感應,達到量測的目的。
關鍵字:超導量子干涉元件,非破壞檢測,差動式渦電流探頭
Superconducting Quantum Interference Device (SQUID) with the unique magnetic characteristics and ultra-high sensitivity combines the differential type of eddy-current probe to apply in the nondestructive evaluation of metal conductor.
The study finds out the resonance frequency of the entire excitation coil, sensing coil, SQUID by SQUID as signal amplifier and the design of quad excitation and differential probe. And we utilize best parameter conditions to fabricate the complete system including Dewar, magnetically shielding box, and coils. Consequently it is used to measure some characteristics and to create two dimensional images.
In order to improve the practicability and convenience of SQUID application to NDE system, we utilize transfer coil to make induced current flow into magnetically shielding box. It results in the occurrence of magnetic field in the input coil for SQUID sensing.
Keywords:Superconducting Quantum Interference Device,Non-destructive testing,Differential eddy current probe.
目錄

封面內頁
簽名頁
授權書.......................................................... iii
中文摘要........................................................ iv
英文摘要........................................................ v
誌謝............................................................ vi
目錄............................................................ ix
圖目錄.......................................................... xi

第一章 緒論..................................................... 1
1.1 研究背景與動機............................................... 1
第二章 文獻回顧................................................. 3
2.1 渦電流檢測法................................................. 3
2.2 實驗架構.................................................... 6
第三章 系統設計與實驗原理......................................... 8
3.1 杜爾瓶...................................................... 8
3.2 探針(Preobe)設計............................................ 12
3.3 高溫超導量子干涉原件.......................................... 21
3.4 屏蔽系統.................................................... 15
3.4.1 屏蔽桶屏蔽係數量測...................................... 19
3.5 探頭系統.................................................... 24
3.6 平面式線圈梯度計原理與製作..................................... 30
3.7 量測系統與人機介面............................................ 36
3.7.1 二維滑軌平台(X-Y table)............................... 37
3.7.2 人機介面LabVIEW....................................... 38
第四章 數據量測與分析............................................ 40
4.1 一維掃描數據量測與分析........................................ 40
4.1.1 空間解析度量測......................................... 43
4.1.2 不同缺陷深度與訊號和相位關係............................. 45
4.2 二維影像掃瞄數據量測.......................................... 47
4.2.1 兩組探頭對不同角度缺陷之量測............................. 48
第五章 結論..................................................... 51
參考文獻

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