采用数字射线DR成像的焊接质量检测
Welding Quality Inspection by Digital Radiography
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。
焊缝
动态范围
非锐化掩摸滤波
Digital radiographic testing
Welding line
Dynamic range
Unsharp masking
Abstract
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.
中图分类号 TG115.28+1
所属栏目 科研成果与学术交流
基金项目
收稿日期 2007/9/17
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备注孔凡琴(1972-)，女，博士，研究方向为工业数字射线检测。
引用该论文: KONG Fan-Qin,LU Hong-Nian. Welding Quality Inspection by Digital Radiography[J]. Nondestructive Testing, 2008, 30(1): 20～22
孔凡琴,路宏年. 采用数字射线DR成像的焊接质量检测[J]. 无损检测, 2008, 30(1): 20～22
被引情况:
【1】张俊哲,戚克鹏,刘春海,官晶晶,任德付, "高速列车变截面铸钢件的X射线数字成像检测",无损检测 33, 66-68(2011)
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参考文献
【1】机械工程学会无损检测分会，著.射线检测[M].北京：机械工业出版社,1997.
【2】Kenneth R Castleman. Digital Image Processing[M].北京：清华大学出版社,1998.
【3】江林华，陈仕东，柴振明.基于非线性映射的X光数字减影图像的获取与处理[J].中国图像图形学报,2002,4A(9):773-775.
【4】Andrea Polesel, Giovanni Ramponi, John Mathews V. Image enhancement via adaptive unsharp masking[J]. Image Processing,2000,3(9):505-510.
【2】Kenneth R Castleman. Digital Image Processing[M].北京：清华大学出版社,1998.
【3】江林华，陈仕东，柴振明.基于非线性映射的X光数字减影图像的获取与处理[J].中国图像图形学报,2002,4A(9):773-775.
【4】Andrea Polesel, Giovanni Ramponi, John Mathews V. Image enhancement via adaptive unsharp masking[J]. Image Processing,2000,3(9):505-510.
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