ZB K 15001-1987 A30-11氨基烘干绝缘漆
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基本信息
| 标准名称： | A30-11氨基烘干绝缘漆 |
| 中标分类： | 电工 >> 电工材料和通用零件 >> 电工绝缘材料及其制品 |
| 替代情况： | HG 2-102-1984;转化为HG/T 3371-1987 |
| 发布日期： | |
| 实施日期： | 2006-03-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： |
适用范围
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前言
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引用标准
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所属分类： 电工 电工材料和通用零件 电工绝缘材料及其制品
下载地址: 点击此处下载
【英文标准名称】:StandardGuideforComputedTomography(CT)Imaging
【原文标准名称】:计算机断层摄影(CT)成像的标准指南
【标准号】:ASTME1441-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:(Guide)
【标准水平】:()
【中文主题词】:计算机断层摄影;导则;图例;信息处理
【英文主题词】:computedtomography(CT);contrast;contrast-detail-dose(CDD);detectability;imaging;modulationtransferfunction(MTF);nondestructiveevaluation(NDE);pointspreadfunction(PSF);reconstruction;resolution;scan;X-rayattenuation
【摘要】:1.1Computedtomography(CT)isaradiographicmethodthatprovidesanidealexaminationtechniquewhenevertheprimarygoalistolocateandsizeplanarandvolumetricdetailinthreedimensions.BecauseoftherelativelygoodpenetrabilityofX-rays,aswellasthesensitivityofabsorptioncrosssectionstoatomicchemistry,CTpermitsthenondestructivephysicaland,toalimitedextent,chemicalcharacterizationoftheinternalstructureofmaterials.Also,sincethemethodisX-raybased,itappliesequallywelltometallicandnon-metallicspecimens,solidandfibrousmaterials,andsmoothandirregularlysurfacedobjects.Whenusedinconjunctionwithothernondestructiveevaluation(NDE)methods,suchasultrasound,CTdatacanprovideevaluationsofmaterialintegritythatcannotcurrentlybeprovidednondestructivelybyanyothermeans.1.2ThisguideisintendedtosatisfytwogeneralneedsforusersofindustrialCTequipment:(1)theneedforatutorialguideaddressingthegeneralprinciplesofX-rayCTastheyapplytoindustrialimaging;and(2)theneedforaconsistentsetofCTperformanceparameterdefinitions,includinghowtheseperformanceparametersrelatetoCTsystemspecifications.Potentialusersandbuyers,aswellasexperiencedCTinspectors,willfindthisguideausefulsourceofinformationfordeterminingthesuitabilityofCTforparticularexaminationproblems,forpredictingCTsystemperformanceinnewsituations,andfordevelopingandprescribingnewscanprocedures.1.3ThisguidedoesnotspecifytestobjectsandtestproceduresforcomparingtherelativeperformanceofdifferentCTsystems;nordoesittreatCTinspectiontechniques,suchasthebestselectionofscanparameters,thepreferredimplementationofscanprocedures,theanalysisofimagedatatoextractdensitometricinformation,ortheestablishmentofaccept/rejectcriteriaforanewobject.1.4Standardpracticesandmethodsarenotwithinthepurviewofthisguide.Thereaderisadvised,however,thatexaminationpracticesaregenerallypartandapplicationspecific,andindustrialCTusageisnewenoughthatinmanyinstancesaconsensushasnotyetemerged.ThesituationiscomplicatedfurtherbythefactthatCTsystemhardwareandperformancecapabilitiesarestillundergoingsignificantevolutionandimprovement.Consequently,anattempttoaddressgenericexaminationproceduresiseschewedinfavorofprovidingathoroughtreatmentoftheprinciplesbywhichexaminationmethodscanbedevelopedorexistingonesrevised.1.5TheprincipaladvantageofCTisthatitnondestructivelyprovidesquantitativedensitometric(thatis,densityandgeometry)imagesofthincrosssectionsthroughanobject.Becauseoftheabsenceofstructuralnoisefromdetailoutsidethethinplaneofinspection,imagesaremucheasiertointerpretthanconventionalradiographicdata.Thenewusercanlearnquickly(oftenuponfirstexposuretothetechnology)toreadCTdatabecausetheimagescorrespondmorecloselytothewaythehumanmindvisualizesthree-dimensionalstructuresthanconventionalprojectionradiography.Further,becauseCTimagesaredigital,theymaybeenhanced,analyzed,compressed,archived,inputasdataintoperformancecalculations,comparedwithdigitaldatafromotherNDEmodalities,ortransmittedtootherlocationsforremoteviewing.Additionally,CTimagesexhibitenhancedcontrastdiscriminationovercompactareaslargerthan20to25pixels.Thiscapabilityhasnoclassicalanalog.Contrastdiscriminationofbetterthan0.1%atthree-sigmaconfidencelevelsoverareasassmallasone-fifthofonepercentthesizeoftheobjectofinterestarecommon.1.6Withpropercalibration,dimensionalinspectionsandabsolutedensitydeterminationscanalsobemadeveryaccurately.Dimensionally,virtuallyallCTsystemsprovideapixelresolutionofrough......
【中国标准分类号】:L81;C43
【国际标准分类号】:35_240_80
【页数】:33P.;A4
【正文语种】:
【英文标准名称】:Scalingladder;madefromlightmetal
【原文标准名称】:轻金属制插接梯
【标准号】:DIN14711T.2-1977
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【原文标准名称】:计算机断层摄影(CT)成像的标准指南
【标准号】:ASTME1441-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:(Guide)
【标准水平】:()
【中文主题词】:计算机断层摄影;导则;图例;信息处理
【英文主题词】:computedtomography(CT);contrast;contrast-detail-dose(CDD);detectability;imaging;modulationtransferfunction(MTF);nondestructiveevaluation(NDE);pointspreadfunction(PSF);reconstruction;resolution;scan;X-rayattenuation
【摘要】:1.1Computedtomography(CT)isaradiographicmethodthatprovidesanidealexaminationtechniquewhenevertheprimarygoalistolocateandsizeplanarandvolumetricdetailinthreedimensions.BecauseoftherelativelygoodpenetrabilityofX-rays,aswellasthesensitivityofabsorptioncrosssectionstoatomicchemistry,CTpermitsthenondestructivephysicaland,toalimitedextent,chemicalcharacterizationoftheinternalstructureofmaterials.Also,sincethemethodisX-raybased,itappliesequallywelltometallicandnon-metallicspecimens,solidandfibrousmaterials,andsmoothandirregularlysurfacedobjects.Whenusedinconjunctionwithothernondestructiveevaluation(NDE)methods,suchasultrasound,CTdatacanprovideevaluationsofmaterialintegritythatcannotcurrentlybeprovidednondestructivelybyanyothermeans.1.2ThisguideisintendedtosatisfytwogeneralneedsforusersofindustrialCTequipment:(1)theneedforatutorialguideaddressingthegeneralprinciplesofX-rayCTastheyapplytoindustrialimaging;and(2)theneedforaconsistentsetofCTperformanceparameterdefinitions,includinghowtheseperformanceparametersrelatetoCTsystemspecifications.Potentialusersandbuyers,aswellasexperiencedCTinspectors,willfindthisguideausefulsourceofinformationfordeterminingthesuitabilityofCTforparticularexaminationproblems,forpredictingCTsystemperformanceinnewsituations,andfordevelopingandprescribingnewscanprocedures.1.3ThisguidedoesnotspecifytestobjectsandtestproceduresforcomparingtherelativeperformanceofdifferentCTsystems;nordoesittreatCTinspectiontechniques,suchasthebestselectionofscanparameters,thepreferredimplementationofscanprocedures,theanalysisofimagedatatoextractdensitometricinformation,ortheestablishmentofaccept/rejectcriteriaforanewobject.1.4Standardpracticesandmethodsarenotwithinthepurviewofthisguide.Thereaderisadvised,however,thatexaminationpracticesaregenerallypartandapplicationspecific,andindustrialCTusageisnewenoughthatinmanyinstancesaconsensushasnotyetemerged.ThesituationiscomplicatedfurtherbythefactthatCTsystemhardwareandperformancecapabilitiesarestillundergoingsignificantevolutionandimprovement.Consequently,anattempttoaddressgenericexaminationproceduresiseschewedinfavorofprovidingathoroughtreatmentoftheprinciplesbywhichexaminationmethodscanbedevelopedorexistingonesrevised.1.5TheprincipaladvantageofCTisthatitnondestructivelyprovidesquantitativedensitometric(thatis,densityandgeometry)imagesofthincrosssectionsthroughanobject.Becauseoftheabsenceofstructuralnoisefromdetailoutsidethethinplaneofinspection,imagesaremucheasiertointerpretthanconventionalradiographicdata.Thenewusercanlearnquickly(oftenuponfirstexposuretothetechnology)toreadCTdatabecausetheimagescorrespondmorecloselytothewaythehumanmindvisualizesthree-dimensionalstructuresthanconventionalprojectionradiography.Further,becauseCTimagesaredigital,theymaybeenhanced,analyzed,compressed,archived,inputasdataintoperformancecalculations,comparedwithdigitaldatafromotherNDEmodalities,ortransmittedtootherlocationsforremoteviewing.Additionally,CTimagesexhibitenhancedcontrastdiscriminationovercompactareaslargerthan20to25pixels.Thiscapabilityhasnoclassicalanalog.Contrastdiscriminationofbetterthan0.1%atthree-sigmaconfidencelevelsoverareasassmallasone-fifthofonepercentthesizeoftheobjectofinterestarecommon.1.6Withpropercalibration,dimensionalinspectionsandabsolutedensitydeterminationscanalsobemadeveryaccurately.Dimensionally,virtuallyallCTsystemsprovideapixelresolutionofrough......
【中国标准分类号】:L81;C43
【国际标准分类号】:35_240_80
【页数】:33P.;A4
【正文语种】:
【英文标准名称】:Scalingladder;madefromlightmetal
【原文标准名称】:轻金属制插接梯
【标准号】:DIN14711T.2-1977
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】: