GB/T 19938-2005 无损检测 焊缝射线照相和底片观察条件 像质计推荐型式的使用
GB/T 19938-2005 Non-destructive testing—Radiography of welds and viewing conditions for films—Utilization of recommended patterns of image quality indicators
基本信息
发布历史
-
2005年09月
研制信息
- 起草单位：
- 上海材料研究所
- 起草人：
- 宓中玉、华云波、金宇飞
- 出版信息：
- 页数：8页 | 字数：14 千字 | 开本： 大16开
内容描述
.......
ICS19.100
J04
中华人民共和国国家标准
GB/T19938-2005八SO2504:1973
无损检测焊缝射线照相和底片
观察条件像质计推荐型式的使用
Non-destructivetesting-Radiographyofweldsandviewingconditionsfor
films-Utilizationofrecommendedpatternsofimagequalityindicators
(ISO2504:1973,Radiographyofweldsandviewingconditionsfor
films-Utilizationofrecommendedpatterns
ofimagequalityindicators(I.Q.1.)，IDT)
2005-09-19发布2006-04-01实施
中华人民共和国国家质量监督检验检疫总局发布
中国国家标准化管理委员会
.......
GB/T19938-2005八SO2504:1973
目次
前言·······，，，，，，·······，，，，，，，·，··，··················································································……
1范围·，····，，，·，，，，，，，，，，，，·，，，，···························，·······，·，··················，······················，····……
2规范性引用文件································································································……
3像质计的位置，·····，··，·························································································……
4像质计灵敏度(像质值)的确定···············……“““““““““‘”“‘””””””’““””””””’“““‘’‘
5可接受的钢的像质值，·，·，····，，，，，，，，，，，，，，·，，，··，·，······················，··，，·····················，·……“‘·““
5.1要求值···。·················，一·，·。，·，，，，，，·，·，，，，，，，，，，，，，，，，，，，，，··，，·········，，，···，··············，，，······……
5.2容限········································，····，·····，，··，，··，·。。·。。··。·。·····，··，，，，，，，，，···，，，，·，···，，，，，，，，一
6射线照相底片观察条件，，，···，·，，··，，，···························，····，·，···············，··…““·‘·“‘·‘，““““‘
6.1引言，，，·，，，，，·。，。，，一一。一·。，。·。··············，，，，，，，，，，，，，，··，·，··，·，，，，，，，············，，，··，···········，，，一
6.2观片灯亮度··············································。。。·······。·。。··。·。。。·······，，，···，，，，，，，·，，，，····，，…
6.3光的颜色··································································，··，····，·，，，。·····一，。，。。。·……
6.4光的漫散射··································································································。·一
6.5亮度的均匀性································································································……
6.6观察时的环境光·························································，，，，。，。·。·。····。····。··。，。。·。·……
6.7暗适应································································································。·····。·。。。一
6.8观察距离······································································································……
6.9观察者的视力································································································……
附录A(规范性附录)阶梯孔型像质计的可见度指数···················································……
表表表图视力表
X射线检测B级(GB/T19943)
铱192伽玛射线检测·········……
钻60伽玛射线检测
表A.1可见度指数N和灵敏度%之间的关系
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GB/T19938-2005/ISO2504:1973
前言
本标准是首次制定
本标准等同采用ISO2504:工973(焊缝射线照相和底片观察条件推荐使用的像质计(IQD型式》
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