摘要
为解决中国聚变工程实验堆316L不锈钢焊缝超声波检测时,探头扫查空间受限、检测信噪比低的难题,提出了基于双晶面阵探头的相控阵超声检测方案.通过CIVA仿真,分析了不同聚焦参数下DMA探头的声场特征,确定对接接头的检测工艺.参考NB/T47013.3-2015《承压设备无损检测第3部分:超声检测》附录I,设计并制作了对比试块,验证了检测工艺下的声束覆盖和Φ2 mm侧横孔信噪比.结果表明,DMA探头可以在有限的扫查空间内实现焊缝声束全覆盖,对比试块中不同位置的Φ2 mm侧横孔信噪比大于15 dB.试验结果可为316L类不锈钢对接焊缝相控阵超声检测工艺制定提供参考.
Aiming at solving the problem of limited scanning space and low signal-to-noise ratio in ultrasonic testing of 316 L stainless steel weld in China Fusion Engineering Testing Reactor(CFETR), a phased array ultrasonic testing technology based on dual matrix array(DMA)probe was proposed. Through CIVA simulation, the sound field of DMA probe under different focusing parameters was analyzed, and the testing technology of butt joint was determined. Referring to appendix I of NB/T47013.3-2015 "Nondestructive testing of pressure equipments-Part 3:ultrasound testing", the reference blocks were designed and manufactured to verify the beam coverage and signal-to-noise ratio of Φ2 mm side drilled holes under the testing process. The results show that the DMA probe beamscan cover all the weld in limited scanning space, and the signal-to-noise ratio of Φ2 mm side drilled holes in different locations of the reference block is greater than 15 d B. The experimental results can provide reference for the formulation of phased array ultrasonic testing technology for 316 L stainless steel butt weld.
作者
王锐
刘志宏
吴杰峰
姜北燕
李波
WANG Rui;LIU Zhihong;WU Jiefeng;JIANG Beiyan;LI Bo(Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;Anhui Province Key Laboratory of Special Welding Technology,Huainan 232000,China)
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2019年第11期33-38,I0002,共7页
Transactions of The China Welding Institution
基金
国家磁约束核聚变能发展研究专项(2015GB107004)
作者简介
第一作者:王锐,男,1983年出生,博士研究生.主要从事磁约束核聚变装置的无损检测与评价工作.发表论文10篇.Email:wangrui@ipp.ac.cn;通信作者:刘志宏,男,博士,副研究员.Email:zhliu@ipp.ac.cn。
