Influence of water layer thickness on sensitivity of water immersionultrasonic testing for pipeline welds

In water immersion ultrasonic testing, the thickness of the water layer directly affects the sensitivity and defect detection rate. In practical applications, the installation error of the scanning device will cause deviations in the thickness of the water layer. By measuring the detection sensitivity of probes under different water layer thicknesses, the law of the influence of water layer thickness deviation on detection sensitivity is obtained, which can provide a reference for the peers.