BS 161-1968 一般设施用钨丝灯(分批试验)规范

上一篇: ANSI C82.4-1968 高亮度放电灯和低压钠灯的镇流器(多源供电)
下一篇: BS 2316 Pt.3-1968 射频电缆规范.第3部分:电缆数据活页(米制和英制单位)

【英文标准名称】:Founding-Spheroidalgraphitecastiron
【原文标准名称】:铸造.球墨铸铁
【标准号】:BSEN1563-1997
【标准状态】:作废
【国别】:英国
【发布日期】:1997-10-15
【实施或试行日期】:1997-10-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:铸件构造;铸件;铸铁;定义;硬度等级;可锻的;断裂伸长;铸造生产;等级;硬度;硬度测量;冲击值;性质;材料编号;材料符号;材料;机械性能;金属;球状石墨;球墨铸铁;有缺口冲击试验;切口试棒冲击弯曲试验;弹性极限应力;特性;重复试验;抽样方法;规范(验收);样品;抗拉强度;抗拉试验;试验
【英文主题词】:Castingconstitution;Castings;Cast-iron;Definition;Degreeofhardness;Ductile;Elongationatfracture;Foundrypractice;Grade;Hardness;Hardnessmeasurement;Impactvalue;Kind;Materialnumbers;Materialsymbol;Materials;Mechanicalproperties;Metals;Nodulargraphites;Nodular-graphitecast-iron;Notchedbarimpactwork;Notched-barimpactbendingtests;Proofstress;Properties;Repeattests;Samplingmethods;Specification(approval);Specimens;Tensilestrength;Tensiletesting;Testing
【摘要】:ThisEuropeanStandarddefinesthegradesandthecorrespondingrequirementsofspheroidalgraphitecastirons.ThisEuropeanStandardspecifiesaclassificationbasedonmechanicalpropertiesmeasuredonmachinedtestpiecespreparedfrom:—separatelycastsamples;—cast-onsamples;—samplescutfromacasting.Thisstandardalsospecifiesaclassificationasafunctionofhardness.Thisstandarddoesnotcovertechnicaldeliveryconditionsforspheroidalgraphiteironcastings,seeEN1559-1andEN1559-3.Thisstandarddoesnotapplytospheroidalgraphitecastironusedforpipes,fittingsandaccessorieswhicharethesubjectofEN545,EN598,EN969andISO2531.
【中国标准分类号】:J31
【国际标准分类号】:77_080_10
【页数】:28P.;A4
【正文语种】:英语


【英文标准名称】:Fibre-reinforcedplasticcomposites-Determinationofflexuralproperties
【原文标准名称】:纤维增强塑料复合材料弯曲性能的测定
【标准号】:ISO14125-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-03
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:挠性;抗弯刚度;纤维增强的;塑料;弯曲试验;试验
【英文主题词】:Bendtesting;Bendingbehaviour;Bendingstiffness;Definitions;Determination;Fibrereinforced;Flexibility;Flexuralstrength;Four-pointmethods;Laminates;Materials;Mechanicaltesting;Plastics;Reinforcedmaterials;Testspecimens;Testing;Three-pointmethods
【摘要】:1ThisInternationalStandardspecifiesamethodfordeterminingtheflexuralpropertiesoffibre-reinforcedplasticcompositesunderthree-point(MethodA)andfour-point(MethodB)loading.Standardtestspecimensaredefinedbutparametersincludedforalternativespecimensizesforusewhereappropriate.Arangeoftestspeedsisincluded.2Themethodisnotsuitableforthedeterminationofdesignparameters,butmaybeusedforscreeningmaterials,orasaquality-controltest.NOTE-Forexample,theflexuralmodulusisonlyanappropriatevalueofthetensileYoung'smodulusofelasticityasthetestisnotfortheadditionaldeflectionduetotheshearstresswhichleadstoalowervalueoftheflexuralmodulusbutusestestspan/specimenthicknessratiosthatminimisethiseffect.Differencesbetweentensileandflexuralpropertiesarealsocausedbythematerialstructure/lay-up.3Themethodissuitableforfibre-reinforcedthermoplasticandthermosettingplasticcomposites.Unreinforcedandparticle-filledplasticsandplasticsreinforcedwithshort(i.e.lessthan1mmlength)fibresarecoveredbyISO178.4Themethodisperformedusingspecimenswhichmaybemouldedtothechosendimensions,machinedfromthecentralportionofthestandardmulti-purposetestspecimen(seeISO3167)ormachinedfromsemi-finishedorfinishedproductssuchasmouldingsorlaminates.5Themethodspecifiespreferreddimensionsforthespecimen.Testswhicharecarriedoutonspecimensofotherdimensions,oronspecimenswhicharepreparedunderdifferentconditions,mayproduceresultswhicharenotcomparable.Otherfactors,suchasthespeedoftestingandtheconditioningofthespecimenscaninfluencetheresults.Formaterialswhicharenothomogeneousthroughthesection,orabovethelinear-elasticresponseregion,theresultappliesonlytothethicknessandstructuretested.Consequently,whencomparativedataarerequired,thesefactorsmustbecarefullycontrolledandrecorded.
【中国标准分类号】:G32
【国际标准分类号】:83_120
【页数】:18P;A4
【正文语种】:英语