In this paper , the reflection method of ultrasonic longitudinal wave and that of ultrasonic shear wave to test the bonding quality of the adhesive interface between steel and concrete from single - surface is adopted respectively 因此,找到一种合理的无损检测方法来判断钢-混凝土粘结质量具有重要的工程意义和实用价值。本文分别采用超声纵波和横波反射的方法来单面检测钢-混凝土界面粘结质量。
Using the directional characteristic of the positive direction explodes elongated charge , wavefront of the elongated charge in the explode location shown higher directivity is in - phase stacked , and also propitious for p - wave to explode and travel 细长药柱震源利用正向激发长药柱的定向性特点，达到激发后的波前面在垂直向下的方向上是同相叠加的，显示出很强的定向性，有利于纵波的激发和传播。
The numerical results show that the main features of the surface acoustic waves obtained in the near fields after considering the temperature - dependence of material parameters are two kinds of waves - the surface skimming longitudinal wave and the rayleigh wave , which is similar as those in a plate 数值结果表明：在考虑材料物理参数随温度变化基础上得到的近场区域的表面声波中显著的波为掠面纵波和瑞利波，与平板中的类似。
