用超声波探测被检查材料时,往往以水作为超声波的耦合剂,使其在探头和被检查材料之间流动来进行探伤。但是,这些水在探伤后仍附着在被检查材料上而发生问题,也就是说,由于许多被检查材料都是钢铁制品,所以探伤后仍附着在被检查材料上会使其表面生锈。另外,在表面波探伤中, Ultrasonic detection of materials to be inspected, often with water as the ultrasonic coupling agent, so that it flows between the probe and the inspection material for testing. However, there is a problem that the water adheres to the material to be inspected after the flaw detection. In other words, since many of the materials to be inspected are made of steel, the surface of the material to be inspected after the flaw detection will rust. In addition, in surface wave inspection,