NF E25-011-1992 紧固件机械特性.由非亚铁金属制造的螺栓、螺钉、柱螺栓和螺母
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【英文标准名称】:Mechanicalpropertiesoffasteners.Bolts,screws,studsandnutsmadeofnon-ferrousmetals.
【原文标准名称】:紧固件机械特性.由非亚铁金属制造的螺栓、螺钉、柱螺栓和螺母
【标准号】:NFE25-011-1992
【标准状态】:现行
【国别】:法国
【发布日期】:1992-06-01
【实施或试行日期】:1992-06-20
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:螺栓;米制螺纹;螺母;紧固件;机械性能;规范;产品;螺钉;试验;作标记;特性;材料;名称与符号;有色金属;断裂荷载;螺柱
【英文主题词】:Bolts;Breakingload;Designations;Fasteners;Marking;Materials;Mechanicalproperties;Metricscrewthreads;Non-ferrousmetals;Nuts;Products;Properties;Screws(bolts);Specifications;Studs;Studs(fasteners);Testing;Tests
【摘要】:
【中国标准分类号】:J13
【国际标准分类号】:21_060_10;21_060_20
【页数】:4P.;A4
【正文语种】:其他
【英文标准名称】:Reliabilitydataanalysistechniques-Proceduresforcomparisonoftwoconstantfailureratesandtwoconstantfailure(event)intensities
【原文标准名称】:可靠性数据分析技术两种恒定失效率和两种恒定失效(事件)密度的比较程序
【标准号】:IEC61650-1997
【标准状态】:现行
【国别】:国际
【发布日期】:1997-08
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC56
【标准类型】:()
【标准水平】:()
【中文主题词】:衰弱率;失败分析;电气工程;可靠性管理;数据分析;比较;可靠性分析;数学计算
【英文主题词】:Comparison;Dataanalysis;Electricalengineering;Failureanalysis;Failurerates;Mathematicalcalculations;Reliabilityanalysis;Reliabilitymanagement
【摘要】:ThisInternationalStandardspecifiesprocedurestocomparetwoobserved-failurerates;-failureintensities;-rates/intensitiesofrelevantevents.Theproceduresareusedtodeterminewhetheranapparentdifferencebetweenthetwosetsofobservationscanbeconsideredstatisticallysignificant.Itisassumedthatthetimeintervalsto/betweenthefailures(events)areindependentandidenticallyexponentiallydistributedduringtheobservationperiod(thatis,theaccumulatedrelevanttesttime).NOTE-Thisassumptionimpliesthatthefailurerate/intensityisconstant.Itisfurthermoreassumedthattherearetechnicalorotherreasonstobelievethatadifference(eitheranimprovementordeterioration)mightexistbetweentheobservedreliabilitycharacteristicofthetwosetsofitemsundercomparison.Someexamplesoftypicalapplicationsaredescribedin5.4.Themethodsaredesignedashypothesistestswhichstate,withaspecifiedrisk(thesignificancelevel),whetherthetwoseriesofobservationsbelongtothesamepopulationorthesameprocess,thatistheyhavethesametruemeanvalue.NOTE-Failurerate,whichisrelevanttonon-repaireditems,isassociatedwithadistributionoftimestofailure.Failureintensity,whichisrelevanttorepaireditemsonly,isassociatedwithapointprocessdescribingase-quenceofevents,forexampletimesbetweenfailuresonatimeaxis.Theproceduresarenotrestrictedtocomparisonoffailurerate/intensity,butcanbeappliedtoobservationsoftwoseriesofanyrelevantevents,providedtheaboveassumptionsarevalid.NOTE-Thetwoseriesofobservationsmaybeofitemsfromthesamepopulation,orthesameitemunderdifferentconditions(forexampleenvironmentandload),orjustcomparableseriesofevents(forexamplecaraccidentsonaroad).Numericalmethodsandagraphicalprocedureareprescribed.Theobservationperiodsrelevanttothetwoseriesdonotneedtobeequal,butiftheyare,themethodsareverysimple.
【中国标准分类号】:A00
【国际标准分类号】:03_120_01
【页数】:39P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforPermeabilityofThermoplasticContainerstoPackagedReagentsorProprietaryProducts
【原文标准名称】:包装试剂或专有产品对热塑塑料容器的渗透性的标准试验方法
【标准号】:ASTMD2684-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D20.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:containers;permeability;plasticbottles;Exposuretests--plastics;Permeability;Plasticbottles;Reagents;Thermoplasticcontainers
【摘要】:Withtheproperprecautionsandbackgroundexperience,resultscanbeusefulforestimationofthelossofapackagedproductthroughthewallsofacontainerduringshelfstorage.Thetestisalsousefulforisolatingtheeffectsofacontainerdesignandmaterials,andisapplicablefordevelopmentandresearchandforspecificationpurposes.Intheabsenceofadequatesupportingdata,extrapolationsorcorrelationsofresultstoconditionsbeyondthoseofthetestarenotrecommendedbecauseofpossibleproductalteration,solvency,orchemicaleffectsontheplastic,etc.Beforeproceedingwiththistestmethod,refertothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredinthematerialsspecificationshalltakeprecedenceoverthosementionedinthistestmethod.Iftherearenomaterialspecifications,thenthedefaultconditionsapply.1.1Thistestmethodcoversproceduresfordeterminingthepermeabilityofthermoplasticcontainerstopackagedreagentsorproprietaryproductsunderspecifiedconditionsofexposure.Theexposuresusedareintendedtosimulatethenormalandelevatedtemperature-storageconditionsthatmightbeencounteredinend-useapplication.1.2Thistestmethodisapplicableonlytothosetypesofcontainersdesignedtoallowpositive,leakproofclosure.1.3Twoproceduresareprovided:1.3.1ProcedureAisspecifictotestingonlywithastandarddesigncontainer.Thisprocedureprovidesfordeterminationsofrateofweightloss(orgain)andforcalculationofapermeabilityfactor.1.3.2ProcedureBappliestotestsofallothercontainerdesigns.Permeabilitydatabythisprocedureareexpressedonlyintermsofrateofweightloss(orgain)fortheparticularcontainertested.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.Note18212;ThereisnoknownISOequivalenttothisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A82
【国际标准分类号】:55_040
【页数】:5P.;A4
【正文语种】:英语
