Furthermore, the attenuation of the guided wave can be scaled by the energy factors.
导波的衰减可以用能量因子来衡量。
Lastly, some new techniques of numerical analysis and signal processing for guided wave n...
论述了导波检测技术领域中数值分析方法和信号处理方面的一些新技术。
Ultrasonic guided wave testing is widely used for the inspection of buried pipelines at present.
介绍了超声导波检测埋地管道的特点和应用。
The designing of hybrid integrated guided wave optical wavelength multiplexer and divider is presented.
设计了一种混合集成波导多波长合波-功率分路器。
Third- order nonlinear phenomena and their potential applications in guided wave structures are reviewed.
本文评述发生在波导结构内的三次非线性光学现象及其潜在的应用。
This paper describes the basic principles of the guided wave inspection and the application cases of guided waves in CSEI.
文中介绍了管道导波检测的基本原理和导波应用的案例。
The finite element method is used to investigate the effect of a time reversal method on the guided wave inspection in pipes.
为克服现有导波检测技术对管道小缺陷检测的不足，给出了一种基于时间反转理论的管道缺陷超声导波无损检测方法。
Dispersion and attenuation characteristics of torsional modes of ultrasonic guided wave in pipe with viscoelastic coating are investigated.
研究了带有粘弹性包覆层管道中超声导波扭转模态的频散及其衰减特性。
The guided wave transducers are developed and used for NDT of the economizer in fossil plant, which have feature of quick inspection and low cost.
实践证明采用超声导波技术检测小径管，定位准确，速度快，成本低。
Based on the ultrasonic guided wave technique and the dispersive waveform prediction method, a method about how to image defects in pipes is presented.
在导波传播理论和频散波形预测理论的基础上，研究了超声导波在检测管道时，如何利用时域波形重构缺陷图像的问题。
Based on the theory of elastodynamics, the longitudinal guided wave and flexural guided wave group velocity dispersion curves for M22 stud were calculated.
根据弹性动力学理论，采用纵向导波与弯曲导波相结合的方法对螺柱所受轴向应力进行无损检测。
All that involved in the paper are analysis and summary of some operation situations of the said pipeline detection with the ultrasonic guided wave process.
对超声导波检测技术在天然气集输站场的管道检测中遇到的一些情况进行了分析总结。
The analyses of the scattering characteristics of some 3-D dis-continuity problems in guided wave structures verify the effective and reliability of the present method.
用这种方法对导波结构三维不连续性散射问题的分析，证实了它的有效性和可靠性。
The extraction efficiency of organic light-emitting diode(OLED) is restrained by the high fraction of energy of the guided wave in the high-index materials(ITO/organic).
有机发光二极管（OLED）发光效率很大程度上受到器件中高折射率材料（ITO/有机物）对导波光能量的制约。
In view of dispersion, the application of guided wave NDT of pipe based on magnetostrictive effect was analyzed by the combination of numerical simulation and experimental research.
利用数值模拟和实验研究两种手段，从频散的角度分析了基于磁致伸缩效应的导波无损检测技术在圆管检测中的应用。
Based on the wavelet transformation and the theory of modal acoustic emission, the dispersion of guided wave propagated in thin plate was investigated by acoustic emission experiment.
基于小波变换和模态声发射理论，通过模态声发射试验的方法确定了管道中导波传播的频散特性。
The compact 4-component 2-D finite-difference frequency-domain algorithm (2-D CFDFD) is one of the effective methods to calculate the propagation properties of ideal guided wave structures.
四分量紧凑格式二维频域有限差分（2-DCFDFD）算法，是求解理想导波结构传输特性的有效方法之一。
The investigation about application of the two signal processing methods to guided wave inspection signals supplies new realization basis for the signal processing of guided wave inspection.
两种信号处理方法的超声导波应用研究为以后导波信号的处理提供了新的实现依据。
Based on previous study on the guided wave propagated in the pipeline, the main of this paper is to do experimental study on damage detection in pipes using ultrasonic guided waves technique.
本文在前人对导波在管道中传播的理论基础上，重点对管道进行了损伤检测的实验研究。
The guided wave optical method can be applied to measurement of characteristic parameters of optical thin films, but usually can only be carried out under the conditions of single wavelength.
导波光学方法能够用来测量光学薄膜的特征参数，但通常只在单一波长条件下进行。
The mechanism of zigzag dispersion curves in the Rayleigh wave exploration is theoretically analyzed. The propagation characteristics and interrelation of the guided waves are studied thoroughly.
对瑞利波勘探中“之”字形频散曲线形成的物理机理进行了理论分析，研究了诸波模的传播特性及相互关系。
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.
运用波动的经典理论，提出了导波在金属杆嵌入层“变截面”传播时波速改变的“等效弹性模量”的概念。
The current domestic and abroad research status is discussed firstly, and the guided wave mode and exciting method used in pipeline crack detection is determined by disperse curve and wave structure.
首先，介绍了管道导波检测技术国内外的研究现状，然后利用频散曲线和波结构确定了管道裂纹检测所用的导波模态及激励方式。
Thick wall pipes are the core component of so called "four pipe" system for thermal power. It is important to apply circumferential guided wave technique to nondestructive testing of thick wall pipes.
厚壁管道是火电机组四大管道系统的核心部件，将超声导波技术应用于厚壁管道的无损检测显得十分重要。
The boundary between the two areas acts as a wall, capable of reflecting a guided EM wave on the graphene much like one would in a three dimensional space.
两个区域的边界就像是一堵墙，能反射被引导的电磁波；这和三维空间中的墙是类似的。
As the heat feeds back to the fuel coating, a thermal wave is created that is guided along the nanotube.
随着纳米管里的热量反馈到燃料涂层上，一种沿着纳米管移动的热波就产生了。
The pressure drop of the combined wave guided valve trays were comprehensively studied based on the survey of the important valve trays nowadays.
在深入调研当前重要浮阀塔板的基础上，全面研究组合波纹导向浮阀塔板的压降性能。
Millimeter wave circuits for precise guided weapons and channelized receivers are discussed in this paper.
讨论了毫米波精导武器和信道化接收机中的集成电路。
To use separation of goal signal and wave filter, the guided precision can be improved.
采用目标信号分离与滤波可进一步提高制导精度。
To use separation of goal signal and wave filter, the guided precision can be improved.
采用目标信号分离与滤波可进一步提高制导精度。
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