EN 62246-1-2002 簧片触点.第1部分:总规范
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来源:标准资料网
【英文标准名称】:Reedcontactsunit-Part1:Genericspecification(IEC62246-1:2002);GermanversionEN62246-1:2002
【原文标准名称】:簧片触点.第1部分:总规范
【标准号】:EN62246-1-2002
【标准状态】:现行
【国别】:
【发布日期】:2003-04
【实施或试行日期】:2003-04-01
【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】:继电器;保护管;簧片触点;笛簧继电器;电气工程;试验;湿水银;总规范;规范;质量;测量技术;测量;电触点;定义;接触单元;烘干;触点继电器
【英文主题词】:Contactrelays;Contactunits;Definition;Definitions;Dry;Electriccontacts;Electricalengineering;Genericspecification;Measurement;Measuringtechniques;Mercurywetted;Protectivetubes;Quality;Reedcontact;Reedcontactunit;Reedrelays;Relays;Specification;Testing
【摘要】:
【中国标准分类号】:L24
【国际标准分类号】:29_120_70
【页数】:58P.;A4
【正文语种】:英语
【英文标准名称】:DevelopmentofDataRecordsforComputerizationofMechanicalTestDataforHigh-ModulusFiber-ReinforcedCompositeMaterials
【原文标准名称】:高弹性模数纤维增强复合材料的机械试验数据转换成计算机数据记录的开发
【标准号】:ASTME1434-1995
【标准状态】:作废
【国别】:美国
【发布日期】:1995
【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】:复合材料;材料数据
【英文主题词】:materialsdata;compositematerials
【摘要】:
【中国标准分类号】:Q23
【国际标准分类号】:83_140
【页数】:
【正文语种】:英语
【英文标准名称】:TestMethodforObtainingHydrostaticDesignBasisforThermoplasticPipeMaterials
【原文标准名称】:获得热塑性管道材料静水压设计基数的试验方法
【标准号】:ANSI/ASTMD2837-2004
【标准状态】:作废
【国别】:美国
【发布日期】:2004-06-01
【实施或试行日期】:2004-06-01
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;塑料;热塑性聚合物;管
【英文主题词】:Basis;Design;Hydrostatic;Pipelines;Pipes;Plasticpipes;Plastics;Testing;Thermoplastic;Thermoplasticpolymers
【摘要】:Thistestmethoddescribestwoessentiallyequivalentprocedures:oneforobtainingalong-termhydrostaticstrengthcategorybasedonstress,referredtohereinasthehydrostaticdesignbasis(HDB);andtheotherforobtainingalong-termhydrostaticstrengthcategorybasedonpressure,referredtohereinasthepressuredesignbasis(PDB).TheHDBisbasedonthematerial'slong-termhydrostaticstrength(LTHS),andthePDBisbasedontheproduct'slong-termhydrostaticpressure-strength(LTHS).TheHDBisamaterialpropertyandisobtainedbyevaluatingstressrupturedataderivedfromtestingpipemadefromthesubjectmaterial.ThePDBisaproductspecificpropertythatreflectsnotonlythepropertiesofthematerial(s)fromwhichtheproductismade,butalsotheinfluenceonproductstrengthbyproductdesign,geometry,anddimensionsandbythespecificmethodofmanufacture.ThePDBisobtainedbyevaluatingpressurerupturedata.TheLTHSisdeterminedbyanalyzingstressversustime-to-rupture(thatis,stress-rupture)testdatathatcoveratestingperiodofnotlessthan10000handthatarederivedfromsustainedpressuretestingofpipemadefromthesubjectmaterial.Thedataareanalyzedbylinearregressiontoyieldabest-fitlog-stressversuslogtime-to-failstraight-lineequation.Usingthisequation,thematerial'smeanstrengthatthe100000-hintercept(LTHS)isdeterminedbyextrapolation.TheresultantvalueoftheLTHSdeterminestheHDBstrengthcategorytowhichthematerialisassigned.TheLTHSissimilarlydeterminedexceptthatthedeterminationisbasedonpressureversustimedatathatarederivedfromaparticularproduct.ThecategorizedvalueoftheLTHSisthePDB.AnHDB/PDBisoneofaseriesofpreferredlong-termstrengthvalues.Thistestmethodisapplicabletoallknowntypesofthermoplasticpipematerialsandthermoplasticpipingproducts.Itisalsoapplicableforanypracticaltemperatureandmediumthatyieldsstress-rupturedatathatexhibitanessentiallystraight-linerelationshipwhenplottedonlogstress(pound-forcepersquareinch)orlogpressure(pound-forcepersquarein.gage)versuslogtime-to-fail(hours)coordinates,andforwhichthisstraight-linerelationshipisexpectedtocontinueuninterruptedthroughatleast100000h.Unlesstheexperimentallyobtaineddataapproximateastraightline,whencalculatedusinglog-logcoordinates,itisnotpossibletoassignanHDB/PDBtothematerial.Datathatexhibithighscatterora"knee"(adownwardshift,resultinginasubsequentlysteeperstress-ruptureslopethanindicatedbytheearlierdata)butwhichmeettherequirementsofthistestmethodtendtogivealowerforecastofLTHS/LTHS.Inthecaseofdatathatexhibitexcessivescatterorapronounced"knee,"thelowerconfidencelimitrequirementsofthistestmethodarenotmetandthedataareclassifiedasunsuitableforanalysis.Afundamentalpremiseofthistestmethodisthatwhentheexperimentaldatadefineastraight-linerelationshipinaccordancewiththistestmethod'srequirements,thisstraightlinemaybeassumedtocontinuebeyondtheexperimentalperiod,throughatleast100000h(thetimeinterceptatwhichthematerial'sLTHS/LTHSisdetermined).Inthecaseofpolyethylenepipingmaterials,thistestmethodincludesasupplementalrequirementforthe"validating"ofthisassumption.Nosuchvalidationrequirementsareincludedforothermaterials(seeNote1).Therefore,inalltheseothercases,itisuptotheuserofthistestmethodtodeterminebasedonoutsideinformationwhetherthistestmethodissatisfactoryfortheforecastingofamaterial'sLTHS/LTHSforeachparticularcombinationofinternal/externalenvironmentsandtemperature.
【中国标准分类号】:P94
【国际标准分类号】:23_040_20
【页数】:
【正文语种】:英语
