Digital Radiography Ⅴ:The Understanding on Compensation Principles
-
摘要: ISO 17636—2:2013标准对补偿规则作出了方法、理论基础、具体规则三方面的规定。给出的理论基础公式实际是射线检测物体对比度公式的转换,给出的补偿规则基于的是不清晰度对对比度的影响。必须理解补偿规则的作用是为了达到充分的成像对比度灵敏度。在应用补偿规则时,必须考虑工件的材料、工艺、结构特点决定的缺陷特点,考虑工件技术条件的要求。Abstract: The situations, theoretical background, particular rules have been specified in ISO 17636-2:2013. In fact, the formula of theoretical background of compensation is just a change of the formula of object contrast in radiography. The particular rules are based on the effect of the unsharpness upon the contrast of the detail radiographic imaging. It must be understood that the function of compensation rules is to achieve a sufficient contrast sensitivity of imaging. When using compensation rules,it must take the characteristic of defect in correpondence with the material,technology and structure of product into account,and it must also take the specification requirements of product into account.
-
Keywords:
- Digital radiography /
- Compensation principles /
- Testing image /
- Radiology
-
-
[1] 王之江,伍树东. 成像光学[M]. 北京:科学出版社,1991. [2] J.D.加斯基尔.线性系统· 傅里叶变换·光学[M] .封开印,译.北京:人民教育出版社,1981. [3] 麦伟麟.光学传递函数及其数理基础[M].北京:国防工业出版社,1979. [4] 母国光,战元龄.光学[M].北京:高等教育出版社,2009. [5] 郑世才. 数字射线无损检测技术[M].北京:机械工业出版社,2012
计量
- 文章访问数: 7
- HTML全文浏览量: 3
- PDF下载量: 8
下载:
