采用数字射线DR成像的焊接质量检测  

Welding Quality Inspection by Digital Radiography

作　　者：孔凡琴 路宏年[2] 

机构地区：[1]通用电气检测科技,上海200233 [2]北京航空航天大学,北京100083

出　　处：《无损检测》2008年第1期20-22,共3页Nondestructive Testing

摘　　要：提出了一种基于数字射线成像的焊缝质量检测方法。采用先进的非晶硅数字检测系统获取信息丰富的原始图像,叠加曝光降低图像噪声;依据射线衰减的指数规律对图像进行对数解调,凸现缺陷特征;运用非锐化掩模滤波对特征进行增强。使焊缝缺陷特征清晰,检测质量达到胶片最高级B级水平。This paper briefly presents a method of inspecting welding lines on the basis of digital radiography. The advanced system based on the amorphous silicon detector was applied to acquire rich original image. And the noise was decreased by averaging the images. Log-calculation was used to show the defects in welding. The defects were amplified by the Unsharp masking algorithm. Then the image quality was improved to the B level the highest in the traditional film.

关 键 词：数字射线检测 焊缝 动态范围 非锐化掩摸滤波 

分 类 号：TG441.7[金属学及工艺—焊接]