多孔层板焊接质量的高频超声检测  

High-frequency ultrasonic testing of welding quality of laminate porous plate

作　　者：付鑫 谢凯文 张超 夏美玲 FU Xin;XIE Kaiwen;ZHANG Chao;XIA Meiling(AVIC Manufacturing Technology Institute,Beijing 100024,China;Beijing Aerospace Special Equipment Testing Research and Development Co.,Ltd.,Beijing 100074,China)

机构地区：[1]中国航空制造技术研究院,北京100024 [2]北京航天特种设备检测研究发展有限公司,北京100074

出　　处：《无损检测》2020年第8期15-19,共5页Nondestructive Testing

摘　　要：介绍了高频超声C扫描检测技术在多孔层板焊接质量检测中的应用。通过分析多孔层板内部结构,结合超声脉冲反射法传播特性,采用高频、小焦点聚焦探头,获得了更高的横向分辨率,实现了多孔层板焊接质量的有效评估。开展多孔层板构件的高分辨率超声C扫描检测,对焊接面进行高分辨率自动化扫描,达到了检测微小缺陷的目的。试验结果表明,所提出的高频超声检测工艺方法可行有效,可应用于多孔层板类构件焊接质量的自动化检测中。This paper introduces the application of high-frequency ultrasonic C-scan detection technique in detecting the laminated porous plate.Considering about the internal structure of the porous laminated plate and the propagation characteristics of the ultrasonic pulse reflection method,a high-frequency,small-focus focusing probe is used to obtain higher lateral resolution,and an effective evaluation of the quality of the porous laminate is achieved.Aiming at detecting smaller defects,high-resolution automated C-scanning of the welded surface of laminate porous plate is performed.It is shown that the proposed high-frequency ultrasonic testing technique is feasible and effective,and it provides an important technical means for the automatic detection of welding quality of such components.

关 键 词：多孔层板 高频超声 小焦点 高分辨率 

分 类 号：TG115.28[金属学及工艺—物理冶金]