CAJ | 학술논문

为了实现在役绝缘子裂纹的带电检测，采用脉冲激光非接触方式在瓷瓶表面激励超声波，用宽带超声换能器接收声波，并用这种非接触发射-接触接收声波的方法，对含有人工刻槽的棕釉高压瓷质绝缘子表面裂纹进行了检测实验，通过可视化成像检测系统，对声波在被检样品中传播的动态波形进行了实时观察，获得缺陷最大振幅图。结果表明，该方法在绝缘子裂纹远程检测方面具有适用性，且检测不受绝缘子复杂曲面形状的影响。
위료실현재역절연자렬문적대전검측，채용맥충격광비접촉방식재자병표면격려초성파，용관대초성환능기접수성파，병용저충비접촉발사-접촉접수성파적방법，대함유인공각조적종유고압자질절연자표면렬문진행료검측실험，통과가시화성상검측계통，대성파재피검양품중전파적동태파형진행료실시관찰，획득결함최대진폭도。결과표명，해방법재절연자렬문원정검측방면구유괄용성，차검측불수절연자복잡곡면형상적영향。
A visual laser ultrasonic technique was developed for non-destructive test of porcelain insulators.A brown glaze porcelain insulator specimen with an artificial slit was scanned by a pulsed laser for generation of ultrasound,and the propagated waves were received by a fixed transducer.The dynamic waveform was observed and ultrasonic images indicating the maximum slit were obtained.Experimental results show that this method is applicable for crack detection of insulators at long range and it is not affected by the complicated curved surface of the insulators.