lamb wave 中文意思是什麼

lamb wave 解釋
拉姆波
  • lamb : n 1 拉姆〈姓氏〉。2 Charles Lamb 查爾斯蘭姆〈1775 1834，英國散文家，批評家〉。n 1 羔羊，小羊；小...
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  1. The key components in laser gyro is he - ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the lamb half classical theory, and on the base of density matrix theory, the optical brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter - propagating wave. on the basis of this equations, adopted the simulation software matlab and virtual instrument programming language labwindows / cvi, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock - in of frequency and the characteristic of light intensity and phasic of the counter - propagating wave in laser gyro

    激光陀螺的核心部件為he - ne環形激光器，而掌握光與介質的相互作用理論是研究激光器的關鍵，採用拉姆半經典理論為主，在密度矩陣理論的基礎上，推導環形諧振腔中描述he - ne氣體增益介質原子運動的光學布洛赫方程，運用介質極化理論得出描述激光陀螺反向行波的光強、位相所滿足的自洽場方程組，在此基礎上，運用matlab模擬軟體和虛擬儀器編程語言labwindows / cvi ，對激光陀螺中的介質增益色散特性、頻率牽引效應、燒孔效應及模競爭、閉鎖效應及環激光的光強和相位特性進行模擬試驗研究，並且運用全量子理論，對激光工作原理進行分析，得出二能級系統單模輻射場的光子數密度分佈，得出激光場的光子統計分佈，模擬激光場的動態建立過程。
  2. Lamb waves method is mainly used to characterize thin plate materials, without using very high frequency, it can measure the velocity of transverse wave and longitudinal wave, depth of the plate, and the bonding quality between plates

    蘭姆波法主要用於表徵薄板類材料，無需較高檢測頻率，可以測得板中縱波和橫波的聲速、板厚和板與板之間的結合特性等，檢測精度較高。
  3. This study adopts active detection technique based on lamb wave to monitor damage in composite materials. pzt ceramics with the diameter of 8mm are bonded on the surface of fiberglass - reinforced composite material acting as both actuators and sensors to generate and collect lamb waves. the waves emitted interact with discontinuities and experience a change in their propagation characteristics when damage is generated

    本文採用lamb波主動監測技術，利用粘貼在復合材料板表面的壓電元件，通過選擇恰當的激勵信號，激勵出可進行lamb波分析的主動監測信號，進而對監測信號進行分析及模式處理，初步實現了二維結構的損傷定位。
  4. The priest is to take the lamb for the guilt offering, together with the log of oil, and wave them before the lord as a wave offering

    24祭司要把贖愆祭的羊羔和那一羅革油一同作搖祭，在耶和華面前搖一搖。
  5. Firstly, the multiple modes and dispersion nature of ultrasonic lamb wave are investigated in theory. furthermore, optimization of excitation signal is performed experimentally with the four parameters : the transport mode, the center frequency, the amplitude and the number of the wave ’ s peak value

    本文首先從理論上分析lamb波的多模式和頻散現象，在理論基礎上結合實驗在傳播模式、中心頻率、信號幅值、波峰數等幾個方面對lamb波進行優化。
  6. Secondly, wavelet transform is applied to compute the arrival time of the lamb wave group velocity experiments results demonstrate that wavelet transform can improve the precision of damage localization

    其次，本文採用小波分析方法提取lamb波群速度的到達時間，獲得了比閾值法及互相關方法更高的精度。
  7. Influences of elastic modulus ' change of sheet on the properties of lamb wave propagation

    板材彈性模量變化對超聲蘭姆波傳播特性的影響
  8. Finally, damage localization system for composite materials based on lamb wave methods using wavelet analysis is discussed in detail

    最後，仔細討論了基於lamb波主動監測技術的結構損傷定位研究。
  9. The paper proposed a method that combining the lamb wave with time - frequency domain analysis technology for the damage detection of composite materials

    本文將lamb波與hht技術結合起來，用於復合材料結構的損傷識別。
  10. The research work of this paper are as follows : firstly, the concept of active monitoring technique based on lamb wave in the paper and the propagation fundamentals of lamb wave in structure are discussed

    首先，本文探討了lamb波在結構中的傳播特性，研究了實驗所選頻率范圍內適于復合材料損傷監測的最好的中心頻率。
  11. The feasibility of the application of lamb wave to inspect the complex shaped construction of al - alloy thin - plate was discussed, the relative parameters were deduced in the experiments, and the technology was validated in the practices

    主要探討了應用蘭姆波檢測鋁合金薄板異型結構件的可行性，從試驗中得出了檢測的參數，並通過實踐應用加以證實。
  12. According to fiberglass - reinforced composite material, the propagation modes of lamb wave before and after damage ' s generation is analyzed. ellipse technique is applied to determine damage location. three time delay estimation methods are compared

    針對復合材料板，分析了lamb波在結構損傷前後的傳播速度；採用了橢圓技術來確定損傷位置；比較了三種不同的時延估計方法的損傷定位效果。
  13. Different characteristic parameters fitting for different damage detection methods are extracted from the filtered sensors signal by hht technology. at last, the location and the degree of damage in the composite material can be determined by using defferent damage detection methods. this study adopts active detection technique based on lamb wave to monitor damage in composite materials

    並且針對每種損傷定位方法選擇有效的描述結構損傷的特徵參數，利用四種不同的方法對結構進行損傷定位和損傷程度的識別，通過實驗證明，這四種損傷識別方法均能有效準確的識別出損傷位置和損傷程度。
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