ASTM E592-1999(2004) 用X射线法做1/4in至2in(6-51mm)厚钢板的射线照相及用钴-60做1in至6in(25-152mm)厚钢板的射线照相以获得ASTM等效X光硬度测量计灵敏度的标准指南
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【英文标准名称】:StandardGuidetoObtainableASTMEquivalentPenetrameterSensitivityforRadiographyofSteelPlates1/4to2in.[6to51mm]ThickwithXRaysand1to6in.[25to152mm]ThickwithCobalt-60
【原文标准名称】:用X射线法做1/4in至2in(6-51mm)厚钢板的射线照相及用钴-60做1in至6in(25-152mm)厚钢板的射线照相以获得ASTM等效X光硬度测量计灵敏度的标准指南
【标准号】:ASTME592-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:E07.02
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:钢板;试验;针入度计;金属;钴;X射线技术;无损检验;钢;板;射线摄影;X射线
【英文主题词】:cobalt60;density;equivalentpenetrametersensitivity;exposure;referenceradiographicillustrations;Xrays
【摘要】:Akeyconsiderationwithanyradiographicsystemisitscapabilitytoresolvedetail(thatis,sensitivity).Thedegreeofobtainablesensitivitywithagivensystemisdependentuponseveralradiographicparameterssuchassourceenergylevel,filmtype,typeandthicknessofintensifyingscreens,exposure(density),etc.ThisguidepermitstheusertoestimatethedegreeofsensitivitythatmaybeobtainedwithXraysandcobalt-60gammarayswhenusingaprescribedsetofradiographicparameters.ThisguidemayalsobeusedinconjunctionwithTestMethodE746toprovideabasisfordevelopingdataforevaluationofauser’specificsystem.Thisdatamayassistauserindeterminingappropriateparametersforobtainingdesireddegreesofradiographicsystemsensitivity.AnalternatetothisapproachistheuseofthoseadjunctradiographicillustrationsdetailedinSection6.1.1Thisguidetoobtainableequivalentpenetrametersensitivitycoverstheminimumpenetrameterthicknessesforwhichtheimageofthe1Tand2Tholesisvisibleforafewpracticalradiographicconditions.Thevaluesrepresentnearoptimumsensitivityforflatsteelplates.Radiographicconditionsthatgivehighervaluesofscatterbuildupfromthespecimenorbackscatteredradiationattheimageplanewillgivepoorersensitivity.1.2EightradiographsthatillustratesensitivitiesobtainablewithpracticalradiographicsystemsareincludedasadjunctstothisguideandmaybeobtainedfromASTM.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninbracketsareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:77_040_20
【页数】:5P.;A4
【正文语种】:
【原文标准名称】:用X射线法做1/4in至2in(6-51mm)厚钢板的射线照相及用钴-60做1in至6in(25-152mm)厚钢板的射线照相以获得ASTM等效X光硬度测量计灵敏度的标准指南
【标准号】:ASTME592-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:E07.02
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:钢板;试验;针入度计;金属;钴;X射线技术;无损检验;钢;板;射线摄影;X射线
【英文主题词】:cobalt60;density;equivalentpenetrametersensitivity;exposure;referenceradiographicillustrations;Xrays
【摘要】:Akeyconsiderationwithanyradiographicsystemisitscapabilitytoresolvedetail(thatis,sensitivity).Thedegreeofobtainablesensitivitywithagivensystemisdependentuponseveralradiographicparameterssuchassourceenergylevel,filmtype,typeandthicknessofintensifyingscreens,exposure(density),etc.ThisguidepermitstheusertoestimatethedegreeofsensitivitythatmaybeobtainedwithXraysandcobalt-60gammarayswhenusingaprescribedsetofradiographicparameters.ThisguidemayalsobeusedinconjunctionwithTestMethodE746toprovideabasisfordevelopingdataforevaluationofauser’specificsystem.Thisdatamayassistauserindeterminingappropriateparametersforobtainingdesireddegreesofradiographicsystemsensitivity.AnalternatetothisapproachistheuseofthoseadjunctradiographicillustrationsdetailedinSection6.1.1Thisguidetoobtainableequivalentpenetrametersensitivitycoverstheminimumpenetrameterthicknessesforwhichtheimageofthe1Tand2Tholesisvisibleforafewpracticalradiographicconditions.Thevaluesrepresentnearoptimumsensitivityforflatsteelplates.Radiographicconditionsthatgivehighervaluesofscatterbuildupfromthespecimenorbackscatteredradiationattheimageplanewillgivepoorersensitivity.1.2EightradiographsthatillustratesensitivitiesobtainablewithpracticalradiographicsystemsareincludedasadjunctstothisguideandmaybeobtainedfromASTM.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninbracketsareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:77_040_20
【页数】:5P.;A4
【正文语种】:
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