guided wave 被導波，循軌波。
被導波，循軌波。 “guided“ 中文翻譯： adj. 有領導的；制導的。 “wave“ 中文翻譯： n. 1.波浪；碎浪； 〔the wave(s)〕 〔詩 ...“guided-wave radio“ 中文翻譯： 導波無線電“optical guided wave“ 中文翻譯： 光導波“god guided-wave optical device“ 中文翻譯： 光波導器件“ct-guided“ 中文翻譯： ct引導“digital-guided“ 中文翻譯： 數字引導“do not be guided“ 中文翻譯： 不要效法“grammar-guided“ 中文翻譯： 語法制導的“ground guided“ 中文翻譯： 地面制導的“ground-guided“ 中文翻譯： 地面制導的“guided aircraft“ 中文翻譯： 被引導飛機“guided airdrop“ 中文翻譯： 可操縱空投“guided arrow“ 中文翻譯： 導引箭; 亞瑪遜的向導箭技能“guided autotracking“ 中文翻譯： 自動地震解釋，通過在地震切面上給定兩個點來進行初始化。根據用戶定義的自動追蹤設置，程序將在兩點之間進行解釋。“guided bearing“ 中文翻譯： 導向式支座; 導向支承“guided bend“ 中文翻譯： 導向彎曲; 型導彎曲“guided bomb“ 中文翻譯： 導向炸彈; 制導炸彈“guided bomber“ 中文翻譯： 飛航式導彈“guided bus“ 中文翻譯： 導向巴士; 膠輪有軌電車; 向巴士“guided by the party“ 中文翻譯： 在黨的教導下“guided carriage“ 中文翻譯： 導向滑架“guided cutting“ 中文翻譯： 導向切割“guided daydream“ 中文翻譯： 導向白日夢“guided discovery“ 中文翻譯： 有指導的發現法
guidepost |
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Ultrasonic guided waves technique is a new technique because of its advantages : fast , economical and reliable . unfortunately , there is n ' t guided - waves transducer in our country at present . based on this problem , the aim of this project is just to develop a kind of guided - waves transducer system with which we can generate and receive ultrasonic guided waves in pipes 超聲導波檢測技術以其檢測速度快、可靠、經濟而且不需要剝離管道外包層等優點成為管道缺陷檢測技術一個新的發展方向，但是目前國內還沒有應用該技術對管道缺陷進行檢測的探頭，本文正是從這個問題出發，目的在于研制一種用于在管道中激勵和接收超聲導波的探頭系統。 |
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An alternative to traditional pipe detection method is to excite stress waves , which can propagate along the pipe , and to monitor the response of the pipe for changes in the received signal at some remote positioa an ultrasonic inspection technique using guided waves was applied to detect and determine the exact location of flaws in long steel pipes 而傳統無損超聲檢測技術是單點檢測，因而，在檢測長距離管道時，這種方法遇到很大困難。而利用縱向超聲導波檢測管道缺陷，激勵導波沿管道傳播，通過監測管道回波的變化，達到一次檢測數十米的管道范圍，并且是全范圍檢測。 |
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Finally , we conduct the experiments of generating and receiving guided waves on a pipe with the transducer system we have developed in our lab . the result of these experiments indicates that the transducer system we have developed can effectively generate and receive special modes of guided waves we need , and restrain the guided wave modes that we do n ' t need . it is hopeful that our guided - waves transducer system can be used in the testing of pipes “ flaw 最后，在實驗室中進行探頭在管道中激勵接收超聲導波的實驗，實驗結果表明，本文研制的探頭系統能夠在管道中有效地激勵和接收所需的導波模態，并且能夠抑制一些不希望出現的導波模態，有望用于管道缺陷的檢測。 |
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Finally , some important conclusions were drawn , that is , using distributed pzt transducers , ultrasonic guided waves are generated and received in a pipe . usually , there are many different modes of guided wave propagating in the pipe and these modes are generally dispersive , the specific exciting signal of a harming windowed toneburst with a central frequency of 70khz for decreasing the effect of dispersion was selected . and guided wave are generated using 16 distributed pzt transducers in a circumferential direction for suppressing flexural modes 首先，對當前本課題研究領域的進展作出綜述，并簡要介紹與超聲導波技術相關的理論基礎；其次，建立了一套有效的實驗裝置，在此實驗裝置基礎上，重點研究了采用分布式pzt傳感器在管中激勵和接收特定模態超聲導波的方法：根據在管狀波導中傳播的超聲波具有頻散現象及多模態特征，選擇具有單一頻率的特定信號激勵超聲導波，使其頻散最小；同時采用分布式傳感器抑制不同模態的波型。 |
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Stoneley wave is a kind of guide waves propagating along the liquid - solid interface in well . when a sonic beam strikes the surface of a thick plate immersed in a liquid , a stoneley wave is generated . stoneley wave approach is applied on analysis of well logging more and more widely in recent ten years with the introduction of advanced analysis methods for component waves from full - waveform array acoustic log data . the spectrum of stoneley waves are used to identify the fractured zones and quantitatively calculate the fracture parameters of reservoirs , especially to evaluate the validity of fractures at fracture - type complex reservoir 斯通利波是一種沿井壁傳播的聲波，當聲波脈沖與井壁和井內流體的界面相遇時就會產生斯通利波。近十幾年來，由于長源距和偶極子陣列聲波儀在測井中的廣泛應用和全波形陣列聲波測井資料中各組分波的處理分析方法的進步，可將斯通利波分離出來單獨研究并應用于測井資料分析。斯通利波技術是評價裂縫及其滲透性的有效方法。 |
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First , we introduce the development of this research field , and review the relative theories and basis on ultrasonic guided waves and development of transducer . subsequently , we depict in detail the prosess of the development of guided - waves transducer , based on the particularity of object to be detected - pip eline and some relative manufacture techniques of transducer . and we have made 24 guided - waves transducers and a mechanical device with which we can mount transducers on a pipe 首先，本文對國內外本課題研究領域的進展作了綜述，并簡要介紹了與超聲導波技術和探頭研制相關的理論基礎；其次，根據檢測對象? ?管道的特殊性，結合常規探頭的制造技術，詳細介紹了超聲導波探頭的研制過程，制作了24個超聲導波探頭和一個用于把探頭在管道上固定的機械裝置，并且對探頭的一些性能參數進行了數值模擬。 |
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In an oil well , the casing is a steel circular pipe , and it would confine and guide the electromagnetic wave propagating ; and the electric properties of the fluid media would determine the propagation factor of the guided wave and affect the distribution state of the electromagnetic field 油井內的套管是鋼鐵質圓管，對電磁波的傳播將產生限制和引導作用；油井內流體介質的電性質將決定導波的傳播常數，影響電磁場在井的軸向上和橫向上的分布狀態和波的傳播特性。 |
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C / c + + , circuit analysis , analogous circuit , pulse and digital circuit , signal and system , physical optics , microcomputer principle andconnection technology , modern communication principle , informationtheory and code , guided waves optics , optical fiber technology andapplication 電路分析,模擬電路,脈沖與數字電路,信號與系統,物理光學,微機原理與接口技術,現代通訊原理,信息理論與編碼,導波光學,光纖技術及應用 |
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When applying an external force on a columnar contact - tip , the corresponding four conical contact - tips will be pressed to the wave - guide plate , which breaks the condition of full inner reflection in the guided wave , and faculae arise because of the leaking light 圓柱觸頭受外力f作用時，對應的四個圓錐觸頭將受到擠壓，由于光波導路中導波的全內反射條件遭到破壞而產生光泄漏，在波導板上形成光斑。 |
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The transmission mechanism of guided wave at joining - section of metal bars and embeded anchor was analyzed theoretically , and an idea of low - frequency impulse coupled whth guided wave propagating through joining - section was presented 對導波在錨固金屬桿中的傳播，尤其是在金屬桿與錨固交界面處的傳播機理進行理論分析，并提出了在錨固交界面處導波以耦合“低頻脈沖”傳播的思想。 |
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Since many modes of guided waves are generated due to guided waves “ multi - modes characteristic in the inspected pipe , to select and excite only single mode to detect 1he pipe can obviously simplify the analysis complexity 但是，由于導波的多模態特性及頻散特性，往往使數據分析異常復雜，因此，選擇和激勵單一模態導波檢測管道可大大簡化問題分析的復雜性。 |
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A new standpoint produced from the study is that the guided wave system in the oil well is different from the normal circular wave guide , as the fluid is a conductive medium , and it allows the higher or lower frequency waves to propagate 通過研究提出了由于井內流體為有耗媒質，油井構成的導波系統不同于一般的圓波導，可以傳播高頻或低頻電磁波的新觀點。 |
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These conceptions might be used for interpreting “ time - lag “ of signal and leveled phenomena of waveform - signals that were produced on time - domain figures in application of guided wave to operate nondestructive test 這一概念，可以解釋運用導波進行無損檢測得到的時域分析圖中信號發生的“時滯”與波形拉平現象。 |
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Applying classical wave theory , a concept of equivalent elastic modulus on propagation speed modification of guided wave through “ variable cross - section “ of metal bar embeded layer was put forward 摘要運用波動的經典理論，提出了導波在金屬桿嵌入層“變截面”傳播時波速改變的“等效彈性模量”的概念。 |
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Firstly , the disperse characteristics and the related theoretical results of the guided waves in different materials and distinct structures are introduced 介紹導波在不同材料和結構中的頻散特性及與之相關的理論成果。 |
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Lastly , some new techniques of numerical analysis and signal processing for guided wave nondestructive testing are described 論述了導波檢測技術領域中數值分析方法和信號處理方面的一些新技術。 |
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Ridge waveguide is a kind of guide wave sturcture that often used , which can be formed from rectangular waveguide 脊波導是一種常見的導波結構，它是矩形波導的一種變形。 |
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The project just do research on using certain guided wave modes to detect the pipe flaw 本文正是針對這一課題深入研究了縱向超聲導波技術及其檢測管道缺陷的方法。 |
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Frequency equation of axisymmetric guided waves in composite structures of bonding metal bars 錨固金屬桿復合結構中軸對稱導波的頻散方程 |