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| Test for the End-corner Reflection of Ultrasonic |
| LING Li-gong |
| Nuclear and radiation safety center, Ministry of Environment Protection, Beijing 100088, China |
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Abstract The end-corner reflection test system is built basing on Z-scan ultrasonic detector, standards and reference blocks,as well as UltraVision ultrasonic signal acquisition and analysis software. Respectively, the end-corner reflection of 45°、60°and 70°Ultrasonic transducers is tested. First, all reflection echo signal are sampled and analysed, and then the end-corner reflection echo signals is isolated basing on ultrasonic propagation law and the end-corner reflection waves mode conversion law. The relative reflectance of the above signal is computed at last. Test results show that 45 °transverse wave transducer end-corner reflection close to the total reflection. The clutter from the end-corner reflection of longitudinal wave transducer is more than the transverse wave transducer.
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［1］郑晖,林树青.超声检测［M］.北京：中国劳动社会保障出版社,2008.
［2］王琳,梁玉梅.单面焊焊缝根部端角反射波的识别方法 ［J］. 无损检测, 2006, 28（9）:496-497. |
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2014, Vol. 35 
