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- STRATUM LONGITUDINAL WAVE SPEED MEASURING METHOD AND ITS APPLICATION 用检层法测试岩土的纵波波速及应用
- Keywords rock longitudinal wave speed transversal wave speed Poisson's ratio micro - structure; 岩石;纵波速度;横波速度;泊松比;微观结构;
- longitudinal wave speed 纵波速度
- Wave speed equals frequency times wavelength. 波速等于频率乘以波长。
- A pressure disturbance cannot drive the energy release profile uniformly to the anti-node region to result in a sustained longitudinal wave. 压力扰动不可能驱使能量释放分布图移至波腹区域以产生持续的纵向波。
- Secondly, the relation between longitudinal wave propagation velocity and resin-bonded stiffness of full length anchoring bolt is simulated. 然后模拟纵波在全长锚固锚杆内传播速度与树脂-围岩粘结刚度之间的关系；
- This paper deduces the errors sources from the process of ultrasonic longitudinal wave testing and evaluates its uncertainty. 本文分析了超声波探伤纵波检测的误差来源，评定了在探伤过程中的不确定度。
- Secondly,the relation between longitudinal wave propagation velocity and resin-bonded stiffness of full length anchoring bolt is simulated. 然后模拟纵波在全长锚固锚杆内传播速度与树脂-围岩粘结刚度之间的关系;
- By sweeping a laser along the pipe to change the local wave speed, physicists might be able to create a horizon. 将雷射沿著管路扫过，可以改变局部的波速，运用这种方式，物理学家也许可以创造出视界来。
- Upon the interface of homogenuous isotropic elastic media the incident longitudinal wave produces the reflected longitudinal (P-P) wave and upgoing converted shear (P-SV)wave. 在均匀各向同性介质的分界面上入射纵波时，除产生纵波反射P-P波外，还会产生转换横波的反射P-SV波。
- Contrast with common vertical longitudinal ultrasonic wave, slant longitudinal wave could be applied to test the nozzle welds on vessel, header, bolts and austenite material. 介绍了超声纵波斜入射法在电站锅炉压力容器管座角焊缝、螺栓和奥氏体钢锻件等部件探伤中的应用。
- The the-oretical and practical significance of the"wave speed theory of flow limitation"proposed by Dawson is preliminarilyidentified by these facts. 这一事实也初步验证Dawson等提出的“流量限制的波速学说”的理论和实用意义。
- The weathering of rock are zoned in terms of the ratio of wave speed, integrality index of rock mass and rock quality index. 运用岩体波速比、岩体的完整性系数、岩石质量指标分别对岩体风化进行了分带；
- The longitudinal wave cannot exist near the surface of a solid, and those exist near it are gliding irrotational waves. 纵波不能在固体表面存在,在固体表面存在的是相应的滑行集散波。
- Aimed at the characteristic of discreteness of the coal sample, pulse-penetrating method is used to measure the acoustic wave speed and the strength test is finished on MTS815. 采用超声脉冲穿透法测量煤样波速并进行岩石力学试验,回归分析得出了煤岩试件声速与其力学参数之间的关系式,为尽可能避免因煤样离散性而带来的盲目试验提供了一条技术途径。
- In longitudinal waves, it is measured from compression to compression or from rarefaction to rarefaction. 在纵波中是以密波与密波或疏波与疏波之间的距离来量度的。
- The results of drilling tests proves that the remaining compressive strength, electromagnetic wave speed, and the covered area of electromagnetic wave amplitude are related. 实验最后以钻心试验印证了，混凝土火害后残馀强度与电磁波波速以及电磁波其振幅包覆之面积是有相关连的。
- The dispersion curves and simulated dispersion relationship of longitudinal waves without the Langmuir wave, the ion sound wave and the ion plasma wave are obtained. 得到了除朗缪尔波、离子声波和离子等离子体波外其它纵波的色散曲线和拟合色散关系。
- Numerical results demonstrate that laser generated surface acoustic wave is comprised with three components, namely surface skimming longitudinal wave, surface shear wave and Rayleigh wave. 数值结果表明：在激发的超声表面波中包括掠面纵波、表面横波和单极性的Rayleigh波等三种模式。
- Chapter 4 presents the study on the longitudinal wave propagation and dispersion in single-walled carbon nanotubes through the use of the continuum mechanics and the molecular dynamics simulation based on the Terroff-Brenner potential. 用连续介质力学方法及基于 Tersoff-Brenner 势的分子动力学方法对比研究了碳纳米管中纵波的传播及频散问题。 主要考虑了微结构对碳纳米管中纵波频散的影响。
