Selection of Probe Angle of Contact Type Ultrasonic Detection System for Steel Pipes
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摘要: 介绍了钢管接触式超声波检测对探头角度的选择，将钢管厚径比（T/D）分为3种情况，并分别选择探头角度。分析认为：T/D≤0.226时，采用纯横波对管体进行检测；0.226<T/D≤0.260时，采用变型横波对管体进行检测，最佳入射角为23.6°；T/D>0.260时，其探头入射角应小于最佳入射角23.6°。Abstract: All involved in the paper is how to select proper probe angles for the contact type ultrasonic detection system for steel pipes.According to the three pipe thickness/diameter ratios or T/D's, the probe angles are determined respectively.Based on relevant analysis, it is identified that in case of T/D ≤ 0.226, pure transversal wave will be used to detect the pipe body;in case of 0.226<T/D ≤ 0.260, transformed transversal wave will be used to detect the pipe body with the best angle of incidence as 23.6°;and in case of T/D>0.260, the probe angle will be less than the best incidence angle of 23.6°.
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Keywords:
- steel pipe /
- ultrasonic detection /
- contact type /
- probe angle /
- K value /
- thickness/diameter ratio /
- transformed transversal wave
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