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- In order to ensure the accuracy and reliability of NDT,theories about acoustic wave scattering from rough surfaces were studied. 为保证超声无损评价检测的准确性和可靠性,本文研究了粗糙界面的声波散射理论。
- Three Numerical Methods for Acoustic Wave Scattering Problem with Impedance Boundary Condition 阻尼边界条件的声波散射问题的三种数值求解方法
- acoustic wave scattering 子波谱方法
- The existence of various defects in the bolt bonding system results in acoustic wave energy attenuation, phase aberration and frequency scattering. 摘要锚固体系中存在不同大小和程度的缺陷时,声波在传播过程中将产生能量衰减、相位突变及频散现象。
- The electrostrictive force induced by beam interference can drive the acoustic wave,and enhance the stabillty of stimulated Brillouin scattering (SBS) phase conjugation fidelity. 光束相干引起的电致伸缩能驱动声子波,从而能加强受激布里渊散射(SBS),提高相位共轭保真度稳定性。
- A pulse acoustic wave and its relationship with OAO flurescence are recorded. 记录了CO_2脉冲激光激发BCl_3分子时形成的脉冲声波,及其与OAO荧光的对应关系。
- J.F. Rosenbaum, “Bulk Acoustic Wave Theory and Devices,” Artech House, 1988. 钟曜光,“压电式微超音波感测器,”国立台湾大学机械工程研究所,民国90年。
- Influence of Acoustic Wave Attenuation on the Properties of Fiber AOTF[J]. 引用该论文 厉群;刘小明;李佟;金韬;周炳琨.
- The optical wave scattering from one-dimensional (1D) lossy dielectric Gaussian random rough surface is studied. 本文研究了一维有耗介质高斯随机粗糙面对光波的散射特性。
- Reflection and refraction of acoustic waves at a sediment interface is an important problem for seafloor scattering,bottom reverberation and the acoustic detection of objects. 声波在海底界面的反射和透射是海底散射、海底混响、海底目标探测的重要问题。
- A successive over-relaxation technique for solving the wave scattering problem in the inhomogeneous and isotropic medium is studied in this paper. 研究非均匀各向同性介质弹性波散射的逐次超松驰计算方法。
- Express the factors resulting in the attenuation of acoustic waves. 叙述引起音波衰减的因素。
- The losses due to bulk wave scattering on non-synchronous area in SAW device was studied using boundary element method combined finite element method(FEM/BEM). 用有限元/边界元法(FEM/BEM)研究了表面波器件中非同步区域中体波散射引起的损耗。
- The transduction of acoustic waves into voltages by a microphone. 声波被麦克风转换为电压。
- Jiang Genshan,Tian Jing,Li Xiaodong.Theoretical analysis for sound wave scattering caused by parallel cylindrical tubes in boilers[J].Acta Acustica,2000,25(2):155-160(in Chinese). [2]姜根山;田静;李晓东.;锅炉换热器管束声散射的理论分析[J]
- For very high frequency clocks, a surface acoustic wave (SAW) oscillator is preferable. 对于非常高的频率时钟,用声表面波振荡器更好。
- The characteristics of the optical wave scattering from the lossy dielectric Gaussian random rough surface of different parameters are analyzed by implementing MOM. 最后,利用矩量法研究了各参数对粗糙面对光波散射特性的影响。
- All these indicate that the acoustic wave velocity in granite samples is affected by several extrinsic factors and some rules may be found. 实验结果表明,声波在岩石内传播速度受很多外在因素影响,并具有一定的传播规律。
- By comparing the acoustic wave impedance with the VSP (vertical seismic profile), the reflectors of the CCSD pilot hole have been analyzed. 分析结果表明(1)岩性间波阻抗差异产生反射波,如榴辉岩与副片麻岩之间波阻抗差异;
- The FEM equation of acoustic wave is used to calculate the air-current natural frequency and pressure pulsation in the pipeline. 利用有限元法求解声学波动方程,建立了管内气流的有限元运动方程,计算出管内气柱的固有频率和气流压力脉动。