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【英文标准名称】:StandardTestMethodforDeterminingtheFocalSizeofIridium-192IndustrialRadiographicSources
【原文标准名称】:测定铱192工业X射线源的聚焦尺寸的标准试验方法
【标准号】:ASTME1114-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E07.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;X射线发生器;铱;泉;焦距;X射线技术;无损检验;射线摄影;金相学;金属
【英文主题词】:cylinder(s);focalsize;iridium192;radiographicsource;referencesample;sphere
【摘要】:Oneofthefactorsaffectingthequalityofaradiographicimageisgeometricunsharpness.Thedegreeofgeometricunsharpnessisdependentuponthefocalsizeofthesource,thedistancebetweenthesourceandtheobjecttoberadiographed,andthedistancebetweentheobjecttoberadiographedandthefilm.Thistestmethodallowstheusertodeterminethefocalsizeofthesourceandtousethisresulttoestablishsourcetoobjectandobjecttofilmdistancesappropriateformaintainingthedesireddegreeofgeometricunsharpness.1.1Thistestmethodcoversthedeterminationofthefocalsizeofaniridium-192radiographicsource.Thedeterminationisbaseduponmeasurementoftheimageoftheiridiummetalsourceinaprojectionradiographofthesourceassemblyandcomparisontothemeasurementoftheimageofareferencesampleinthesameradiograph.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N78
【国际标准分类号】:19_100
【页数】:5P.;A4
【正文语种】: