| 摘要: |
| 把一对纵波超声技能器置于砼表面时，将产生表面波并沿其表面传播。由于纵波和表面波之间振幅的差异，可以从一系列纵波中分辨出表面波的前沿并加以测定。根据弹性参数与表面波、纵波速度间的相互关系，就可得出砼的动弹性模量和泊松比。经对砼试件按该法测得的弹性参数与传统的共振法结果比较表明，本文的方法是可靠的。 |
| 关键词: 动弹性模量，泊松比，波速，表面波，砼 |
| DOI： |
| 分类号:TU528.01 |
| 基金项目: |
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| Using compression wave ultrasonic transducers to measure velocity of surface waves and dynamic modulus of elasticity for concrete |
|
Luo Qixian
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| Abstract: |
| When a pair of conventional compression wave ultrasonic transducers are placed on the surface of concrete, surface waves will be generated and propagate along the surface of the concrete. Due to the marked difference between the amplitude of compression waves and surface waves, the leading edge of surface waves can be identified on the waveform from a train of compression waves and can be measured. According to the relationship between the parameters of elasticity and the velocity of surface and compression waves, the dynamic modulus of elasticity and Poisson's ratio of concrete can be calculated. |
| Key words: dynamic modulus of elasticity, Poisson's ratio, velocity of wave, surface waves, concrete, |
