焊缝缺陷X射线实时自动检测系统的图像处理  

Image Processing of Real-Time Automatic X-Ray Inspection System for Weld Defects

作　　者：侯润石[1] 邵家鑫[1] 王力[1] 都东[1] 

机构地区：[1]清华大学机械工程系先进成形制造教育部重点实验室,北京100084

出　　处：《无损检测》2009年第2期99-101,109,共4页Nondestructive Testing

基　　金：国家自然科学基金资助项目(50628506)

摘　　要：针对焊缝缺陷X射线实时自动检测技术普遍存在误检率与漏检率高的问题,研制了钢管焊缝缺陷X射线实时自动检测系统。研究了采用波形分析法与背景消除法信息融合进行焊缝缺陷检测的方法,从而有效降低了误检率与漏检率。该系统已用于西气东输钢管焊缝缺陷X射线实时自动检测。Real-time automatic X-ray inspection technique has the advantage of good consistency and high automation, so it is fit for on-line inspection of long weld. However this technique is hard to be applied in practice due to high false alarm and missed detection rates. Aiming at this problem, the real-time X-ray automatic inspection system for weld defects in pipe was established. The information fusion was proposed in two defect segmentation methods of weld X-ray image et al, background subtraction and grey level wave analysis, thus the false alarm and missed detection rates were decreased greatly. This system was being used for steel pipe manufacture in the West- East natural gas transmission project.

关 键 词：射线检测 焊缝缺陷 实时图像处理 

分 类 号：TG115.28[金属学及工艺—物理冶金]