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射线检测标准中最高电压限值的规定

孙朝明

孙朝明. 射线检测标准中最高电压限值的规定[J]. 无损检测, 2016, 38(1): 75-78. DOI: 10.11973/wsjc201601020
引用本文: 孙朝明. 射线检测标准中最高电压限值的规定[J]. 无损检测, 2016, 38(1): 75-78. DOI: 10.11973/wsjc201601020
SUN Chao-ming. The Regulations of Maximum Values of Tube Voltage for Radiographic Testing[J]. Nondestructive Testing, 2016, 38(1): 75-78. DOI: 10.11973/wsjc201601020
Citation: SUN Chao-ming. The Regulations of Maximum Values of Tube Voltage for Radiographic Testing[J]. Nondestructive Testing, 2016, 38(1): 75-78. DOI: 10.11973/wsjc201601020

射线检测标准中最高电压限值的规定

详细信息
    作者简介:

    孙朝明(1977-),男,高级工程师,主要从事无损检测工作。

  • 中图分类号: TG115.28

The Regulations of Maximum Values of Tube Voltage for Radiographic Testing

  • 摘要: 为了解射线检测标准中最高电压限值曲线所对应的技术细节, 对现行及最新制订的射线检测标准中的相关内容进行了分析比较, 追溯了最高电压限值规定的由来以及其发展变化。在此基础上, 定量分析了最高电压限值与透照厚度间的函数关系, 初步探讨了最高电压限值与图像对比度间的内在关联。分析表明, 射线检测标准中规定的最高电压限值曲线, 是按指数函数关系进行设置的; 最高电压限值曲线在胶片照相检测中应用较好, 但在射线数字成像检测中并不适用; 如果对射线检测中的主因对比度、图像信噪比进行综合分析, 则有望规定出射线数字成像检测用的最高电压限值。
    Abstract: To investigate the details related with the defined maximum values of tube voltage in some radiographic testing standards, the very contents in present effective standards and new developing standards were compared and analyzed, and then the origin and changes of this specification were traced. Thus, relationship between maximum values of tube voltage and penetrated thickness was quantitatively analyzed, and correlation between maximum values of tube voltage and contrast of testing result was quantitatively calculated roughly. From the analysis, we know the curve of maximum X-ray voltage versus penetrated thickness is made according to certain math function. Maximum values on the curve are the best practice values for film radiography, however, these values are not quite applicable for digital radiographic testing. If comprehensive analysis on essential contrast and signal-to-noise in radiographic testing was carried out, maximum X-ray voltage applicable for digital radiographic testing would be prescribed.
  • [1] JB/T 4730.2-2005 承压设备无损检测 第2部分: 射线检测[S].
    [2] GB/T 3323-2005 金属熔化焊焊接接头射线照相[S].
    [3] ISO/DIS 17636-2 2010 Non-destructive testing of welds-radiographic testing-part 2:X- and gamma-ray techniques with digital detectors[S].
    [4] NB/T 47013.11-201X 承压设备无损检测 第11部分: X射线数字成像检测[S].
    [5] GB 3323-1987 钢熔化焊对接接头射线照相和质量分级[S].
    [6] JB 4730-1994 压力容器无损检测[S].
    [7] 郑世才.X射线照相技术 第二讲 透照规范与曝光曲线[J].无损检测, 1998, 10(7): 207-213.
    [8] 郑世才.射线Ⅲ级人员补充专题讲座(续)[J].无损探伤,1996(2): 42-48.
    [9] 郑世才.JB/T 4730.2-2005标准最高管电压规定的说明[J].无损探伤, 2009, 33(4): 22-25.
    [10] 李亚洲.射线检测中最高管电压优化公式的探讨[J].无损探伤, 2010, 34(6): 41-42.
    [11] BS/EN 1435-1997 Nondestructive testing of welds-radiographic testing of welded joints[S].
    [12] GERWARD L, GUILBERT N, JENSEN K B, et al. WinXCom-a program for calculating X-ray attenuation coefficients[J]. Radiation Physics and Chemistry,2004,71:653-654.
    [13] ZSCHERPEL U, EWERT U, BAVENDIEK K. Possibilities and limits of digital industrial radiology: The new high contrast sensitivity technique-examples and system theoretical analysis[C]. France Lyon: INSA-Lyon, 2007.
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出版历程
  • 收稿日期:  2015-06-07
  • 刊出日期:  2016-01-09

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