CAJ | 학술논문

为排除闭式叶轮的质量隐患，基于超声脉冲反射法原理，利用相控阵超声检测技术，并通过 CIVA11．0软件对声波在工件中的传播、声场的分布以及声波与缺陷的相互作用进行模拟，进而优化实验方案，最后利用纵波聚焦扫描对人工预置平底孔进行检测。结果表明：利用相控阵超声检测技术在叶轮内腔对轮盘进行检测，缺陷信号明显，缺陷定位精度高，为叶轮质量控制提供了一种参考方法。
위배제폐식협륜적질량은환，기우초성맥충반사법원리，이용상공진초성검측기술，병통과 CIVA11．0연건대성파재공건중적전파、성장적분포이급성파여결함적상호작용진행모의，진이우화실험방안，최후이용종파취초소묘대인공예치평저공진행검측。결과표명：이용상공진초성검측기술재협륜내강대륜반진행검측，결함신호명현，결함정위정도고，위협륜질량공제제공료일충삼고방법。
In order to eliminate the quality hidden danger of enclosed impeller,based on the principle of ultrasonic pulse reflection method,the paper uses phased array ultrasonic testing technology to simulate the sound wave propagation in impeller,sound field distribution and interaction between defect and sound wave by CIVA1 1 .0 for optimizing the experiment plan,at last,the artificial flat bottom hole is detected by longitudinal wave focus scanning.Detection result shows that the phased array ultrasonic testing tech-nology is utilized to detect the turbine disc through impeller inner cavity and finds that signal of defect is evident and the locating precision of defect is high,which provides a reference method for impeller quali-ty control.