EN ISO 4018-2011 六角头螺钉.产品等级C级(ISO4018-2011).德文版本ENISO4018-2011
时间:2024-05-14 04:01:07 来源: 标准资料网 作者：标准资料网 阅读：9847
【英文标准名称】:Hexagonheadscrews-ProductgradeC(ISO4018:2011);GermanversionENISO4018:2011
【原文标准名称】:六角头螺钉.产品等级C级(ISO4018-2011).德文版本ENISO4018-2011
【标准号】:ENISO4018-2011
【标准状态】:现行
【国别】:
【发布日期】:2011-07
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:螺栓;名称与符号;尺寸公差;尺寸规格;外螺纹;紧固件;无头紧固件;六角头螺钉;六角头螺栓;六角头紧固件;ISO米制螺纹;材料;机械连接;米制螺纹;产品等级;性能;螺钉(螺栓);柄;规格;钢;强度等级;材料强度;螺纹;公差(测量);对边宽度
【英文主题词】:Bolts;Designations;Dimensionaltolerances;Dimensions;Externalthreads;Fasteners;Headlessfasteners;Hexagonheadscrews;Hexagonalheadbolts;Hexagonal-headfasteners;ISOmetricthreads;Materials;Mechanicallinkages;Metricscrewthreads;Productgrades;Properties;Screws(bolts);Shanks;Specifications;Steels;Strengthclass;Strengthofmaterials;Threads;Tolerances(measurement);Widthacrossflats
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:21_060_10
【页数】:17P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforNondestructiveAssayofSpecialNuclearMaterialinLowDensityScrapandWastebySegmentedPassiveGamma-RayScanning
【原文标准名称】:分段无源γ射线扫描法对低密度废料及残渣中特殊核材料进行无损检验的标准试验方法
【标准号】:ASTMC1133-2003
【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】:C26.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:核技术;γ辐射;放射性废物;无损检验;试验
【英文主题词】:nondestructiveassay;segmentedgamma-rayscanning;specialnuclearmaterial
【摘要】:Segmentedgamma-rayscanningprovidesanondestructivemeansofmeasuringthenuclidecontentofscrapandwastewherethespecificnatureofthematrixandthechemicalformandrelationshipbetweenthenuclideandmatrixmaybeunknown.Theprocedurecanserveasadiagnostictoolthatprovidesaverticalprofileoftransmissionandnuclideconcentrationwithintheitem.Samplepreparationisgenerallylimitedtogoodwaste/scrapsegregationpracticesthatproducerelativelyhomogeneousitemsthatarerequiredforanysuccessfulwaste/inventorymanagementandassayscheme,regardlessofthemeasurementmethodused.Also,processknowledgeshouldbeused,whenavailable,aspartofawastemanagementprogramtocomplementinformationonsampleparameters,containerproperties,andtheappropriatenessofcalibrationfactors.1.1Thistestmethodcoversthetransmission-correctednondestructiveassay(NDA)ofgamma-rayemittingspecialnuclearmaterials(SNMs),mostcommonly235U,239Pu,and241Am,inlow-densityscraporwaste,packagedincylindricalcontainers.ThemethodcanalsobeappliedtoNDAofothergamma-emittingnuclidesincludingfissionproducts.High-resolutiongamma-rayspectroscopyisusedtodetectandmeasurethenuclidesofinterestandtomeasureandcorrectforgamma-rayattenuationinaseriesofhorizontalsegments(collimatedgammadetectorviews)ofthecontainer.Correctionsarealsomadeforcountinglossesoccasionedbysignalprocessinglimitations(1-3).1.2TherearecurrentlyseveralsystemsinuseorunderdevelopmentfordeterminingtheattenuationcorrectionsforNDAofradioisotopicmaterials(4-8).Arelatedtechnique,tomographicgamma-rayscanning(TGS),isnotincludedinthistestmethod(9,10).1.2.1ThistestmethodwillcovertwoimplementationsoftheSegmentedGammaScanning(SGS)procedure:(1)IsotopeSpecific(Mass)Calibration,theoriginalSGSprocedure,usesstandardsofknownradionuclidemassestodeterminedetectorresponseinamassversuscorrectedcountratecalibrationthatappliesonlytothosespecificradionuclidesforwhichitiscalibrated,and(2)EfficiencyCurveCalibration,analternativemethod,typicallyusesnon-SNMradionuclidesourcestodeterminesystemdetectionefficiencyvs.gammaenergyandtherebycalibrateforallgamma-emittingradionuclidesofinterest(11).ThesetwomethodswillbecoveredindetailintheremainderofthemainbodyofthistestmethodandAnnexA1.1.2.1.1EfficiencyCurveCalibration,overtheenergyrangeforwhichtheefficiencyisdefined,hastheadvantageofprovidingcalibrationformanygamma-emittingnuclideforwhichhalf-lifeandgammaemissionintensitydataareavailable.1.3Theassaytechniquemaybeapplicabletoloadingsuptoseveralhundredgramsofnuclideina208-L(55-gal)drum,withmorerestrictedrangestobeapplicabledependingonspecificpackagingandcountingequipmentconsiderations.1.4Measuredtransmissionvaluesmustbeavailableforuseincalculationofsegment-specificattenuationcorrectionsattheenergiesofanalysis.1.5Arelatedmethod,SGSwithcalculatedcorrectionfactorsbasedonsamplecontentanddensity,isnotincludedinthisstandard.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8.
【中国标准分类号】:F40
【国际标准分类号】:13_030_30;71_040_50
【页数】:16P.;A4
【正文语种】:
【英文标准名称】:Aerospaceseries-Technicaldrawings-Representationofpartsmadeofcompositematerials-Generalrules
【原文标准名称】:航空航天系列.技术制图.复合材料部件表示法.总则
【标准号】:BSEN4408-1-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-10-31
【实施或试行日期】:2005-10-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:技术图;工程图;航空运输工程;叠层板材;符号;复合材料;作标记
【英文主题词】:
【摘要】:Thisstandardspecifiesthegeneralrulesfortherepresentationofpartsmadeofcompositematerials,intechnicaldrawings.Itappliestoaerospacestructuresusingcompositesmaterials,andtheirapplicationswhenthisstandardisspecified.
【中国标准分类号】:V04
【国际标准分类号】:01_100_99;49_020
【页数】:12P;A4
【正文语种】:英语