Surface wave detection method for longitudinal defect on outer surface of small-diameter tube
A technology of longitudinal defects and detection methods, which is applied in the direction of using sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc., can solve problems such as small-diameter pipes that are not mentioned, and achieve the effect of improving the detection rate and high detection accuracy
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[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings:
[0030] reference figure 1 The surface wave detection method for longitudinal defects on the outer surface of a small diameter pipe of the present invention includes the following steps:
[0031] 1) Clean the rust and foreign matter on the outer surface of the small-diameter pipe to be tested. The steel wire ball is used to clean the rust and foreign matter on the outer surface of the small-diameter pipe to be tested, and then the surface wave probe is coated with the couplant on the moving area of the small-diameter pipe to be tested. , Wherein the coupling agent is white petrolatum;
[0032] 2) The wafer 2 in the surface wave probe is located on the hypotenuse of the acoustic wedge 1, where the bottom surface of the acoustic wedge 1 is a cylindrical concave surface that matches the outer surface of the small diameter tube to be measured. Place the surface wave pr...
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