带凸面声透镜的相控阵超声检测技术  

Phased array ultrasonic technology with convex acoustic lens

作　　者：郭伟灿 缪存坚 杜兴吉 滕国阳 宋鑫 GUO Weican;MIAO Cunjian;DU Xingji;TENG Guoyang;SONG Xin(Zhejiang Academy of Special Equipment Science,Hangzhou 310020,China;Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province,Hangzhou 310020,China)

机构地区：[1]浙江省特种设备科学研究院,杭州310020 [2]浙江省特种设备安全检测技术研究重点实验室,杭州310020

出　　处：《无损检测》2021年第3期27-31,84,共6页Nondestructive Testing

基　　金：浙江省重点研发项目(2020C01040);浙江省质量技术基础建设项目(20200111);佛山仙湖实验室开放基金重大项目(XHD2020-004)。

摘　　要：带凸面声透镜的相控阵超声技术通过设置与工件表面曲率相匹配的凸面透声楔块来改善平面探头与凹面工件的界面耦合效果,同时,凸面声透镜在圆周方向上有一定的声束聚焦作用,可有效降低凹界面的耦合损失对检测造成的不利影响。将带凸面声透镜的相控阵超声技术应用于承压设备插入式管座角焊缝的质量检测,结合实时成像技术,可以直观地显示缺陷的位置、分布、尺寸等信息,解决了管座角焊缝超声检测耦合效果差的技术难题。In this work,the phased array technology with convex acoustic lens was adopted,and the convex acoustic wedge matched with the workpiece surface was used to improve the interface coupling effect.At the same time,the convex acoustic lens has a certain focusing effect in the circumferential direction.The above coupling and focusing method can effectively overcome the adverse effect of the coupling loss.The phased array technology with convex acoustic lens was applied to the quality inspection of pipe socket angle seam of the pressure equipment.Combined with real-time imaging technology,the position,distribution,dimensions and other information of defects can be displayed intuitively,and the technical difficulties of bad interface coupling effect of ultrasonic inspection in pipe socket angle seam were then solved.

关 键 词：承压设备 小径管 管座角焊缝 超声检测 凸面声透镜 相控阵超声 

分 类 号：TG115.28[金属学及工艺—物理冶金]