3 In experiment the common electrical-resistance strain gages is used as receiver to replace the PZT or velocity and acceleration transducer which is frequently used in pipeline NOT.

• 实验采用动态电阻应变电测法，采用普通的电阻应变片作为接收传感器，代替了通常用于管道检测的压电探头或桩基完整性检测的反射波法中使用的速度传感器或加速度传感器。