讨论了20钢高温时效组织与超声波速度间的相关性。
The correlation between ultrasonic velocity and microstructure in 20g aged at high temperature is discussed.
探讨了岩石的微观裂隙、超声波速度与岩芯变形之间的关系。
Moreover, investigated the relation among the P wave velocity, the micro-crack in rock with the variation of core diameter.
本文报道了一种基于脉冲回波相位谱的超声波速度测量方法，并给出了它的详细理论推导过程。
This paper presents the development of a pulse-echo measurement method, based on the use of a phase spectrum to determine the ultrasonic wave velocity. A detailed descripsion of the theory is given.
试验结果表明，超声波速度、岩样的强度以及破坏形式具有明显的方向性，而平均杨氏模量随方向的变化不很显著。
The experimental result shows that the ultrasonic waves speed, strength and destroy type is different to rock direction, but the aver- age modulus is the same.
我们用MTS的超声波测试系统研究了地表岩样饱和水及孔隙压力对纵横波速度的影响。
Using MTS Ultrasonic Measurement System, we studied the influences of water of saturation and pore pressure on velocities of compressional (P) and shear (S) waves in exposure rock specimens.
我们用MTS的超声波测试系统研究了地表岩样饱和水及孔隙压力对纵横波速度的影响。
Using MTS Ultrasonic Measurement System, we studied the influences of water of saturation and pore pressure on velocities of compressional (P) and shear (S) waves in exposure rock specimens.
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