【英文标准名称】:StandardTestMethodforDeterminingRelativeImageQualityofIndustrialRadiographicFilmExposedtoX-Radiationfrom4to25MeV
【原文标准名称】:测定曝光于4到25MeV的X射线下工业射线照片底片的相对影象质量用标准试验方法
【标准号】:ASTME1735-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:图象质量;放射;摄影;辐射暴露;射线摄影胶片;放射性试验;试验
【英文主题词】:EPS;film;IQI;radiation;radiographic;X-ray
【摘要】:Thistestmethodprovidesatestfordeterminingtherelativeimagequalityresponseofradiographicfilmwhenexposedto4to25MeVXraysasanysinglecomponentofthetotalX-raysystem(forexample,screens)isvaried.Byholdingthetechniqueparameters(exceptexposuretime)andprocessingparametersconstant,theimagequalityresponseofradiographicfilmmaybeevaluatedonarelativebasis.Alternately,thistestmethodprovidesatestformeasuringtheimagequalityoftheX-raysystemoranycomponentofthesystem.1.1ThistestmethodcoversdeterminationoftherelativeimagequalityresponseofindustrialradiographicfilmwhenexposedtoX-radiationsourceshavingphotonenergiesfrom4to25MeV.Evaluationofthefilmisbasedonthevisibilityofholesinaspecialimagequalityindicator(IQI).Sinceresultsforagivenfilmtypemayvary,dependingontheparticularprocessingsystemandprocessingconditionsused,itisessentialtostatetheexposureparametersandachieveddensity,processingchemistry,processingcycle,andprocessingtemperature.Forthepurposesofthistestmethod,itisassumedthatallcomponentsoftheX-raysystemareoperatingproperlyandarecapableofproducingagivenimagequality.ThistestmethodisnotintendedtobeusedforfilmsexposedwithCobalt60sourcesorX-raysourcesbelow4MeV.1.2ThevaluesstatedineitherSIorinch-poundunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G80
【国际标准分类号】:37_040_20
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Cored,Annular,Concentric-Lay-StrandedCopperConductors
【原文标准名称】:有心的圆形同心绞捻铜导线
【标准号】:ASTMB226-1990
【标准状态】:作废
【国别】:美国
【发布日期】:1990
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:绞线;电气工程;导电体;有色金属;铜;电气元件
【英文主题词】:copper;electricalengineering;electricconductors;electricalcomponents;strandedconductors;non-ferrousmetals
【摘要】:
【中国标准分类号】:K11
【国际标准分类号】:29_060_20
【页数】:4P;A4
【正文语种】:英语