【英文标准名称】:Fittingsforbuttweldingintocopper-nickel-alloypipelines-Elbows
【原文标准名称】:与铜镍合金管路对接焊的配件.管弯头
【标准号】:DIN86090-1996
【标准状态】:作废
【国别】:德国
【发布日期】:1996-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:管连接件;规范(验收);镍合金;铜合金;配件;材料;设计;公差(测量);管道配件;造船;船用管道系统;管道;作标记;尺寸公差;造船工程;焊接的管弯头;焊接上;焊接接头;名称与符号;尺寸
【英文主题词】:Bendcouplings;Bendsforwelding;Copperalloys;Design;Designations;Dimensionaltolerances;Dimensions;Fittings;Marinepipeworksystems;Marking;Materials;Navalengineering;Nickelalloys;Pipecouplings;Pipefittings;Pipelines;Shipbuilding;Specification(approval);Tolerances(measurement);Weldin;Weldedjoints;Weldingfittings
【摘要】:
【中国标准分类号】:J15
【国际标准分类号】:23_040_40
【页数】:4P.;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforApparentBendingModulusofPlasticsbyMeansofaCantileverBeam
【原文标准名称】:悬臂梁法测定塑料的表观弯曲模量的标准试验方法
【标准号】:ASTMD747-2010
【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】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:apparentbendingmodulus;bendingmovement;cantileverbeam;stiffness;Apparentbendingmodulus;Cantilevertesting;Deformation--plastics;Bendingmoment;Flexibility--plastics;Stiffness--plastics
【摘要】:Thistestmethodprovidesameansofderivingtheapparentbendingmodulusofamaterialbymeasuringforceandangleofbendofacantileverbeam.Themathematicalderivationassumessmalldeflectionsandpurelyelasticbehavior.Underactualtestconditions,thedeformationhasbothelasticandplasticcomponents.Thistestmethoddoesnotdistinguishorseparatethese,andhenceatrueelasticmodulusisnotcalculable.Instead,anapparentvalueisobtainedandisdefinedastheapparentbendingmodulusofthematerial.ThetangentmodulusobtainedbyTestMethodsD790ispreferred,whenthematerialcanbetestedbytheTestMethodsD790testprocedure.Becauseofdeviationsfrompurelyelasticbehavior,changesinspanlength,width,anddepthofthespecimenwillaffectthevalueoftheapparentbendingmodulusobtained;therefore,valuesobtainedfromspecimensofdifferentdimensionsarenotnecessarilycomparable.Rateofloadingiscontrolledonlytotheextentthattherateofangularchangeoftherotatingjawisfixedat58to66x00B0;/min.Actualrateofstressingwillbeaffectedbyspanlength,width,depthofthespecimen,andweightofthependulum.Formanymaterials,therearespecificationsthatrequiretheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Table1ofClassificationSystemD4000liststheASTMmaterialsstandardsthatcurrentlyexist.Note28212;Adiscussionofthetheoryofobtainingapurelyelasticbendingmodulus,usingacantileverbeamtestingapparatus,canbefoundinAppendixX1.Theresultsobtainedunderactualtestconditionswillbetheapparentbendingmodulus.1.1Thistestmethodcoversthedeterminationoftheapparentbendingmodulusofplasticsbymeansofacantileverbeam.Itiswellsuitedfordeterminingrelativeflexibilityofmaterialsoverawiderange.ItisparticularlyusefulformaterialstooflexibletobetestedbyTestMethodsD790.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoknownISOequivalenttothisstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:6P.;A4
【正文语种】:英语
基本信息
| 标准名称： | ＭＪ内螺纹第Ⅰ系列工艺底孔用针式双头光滑塞规 ＭＪ1.6~ＭＪ３ |
| 中标分类： |
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| 发布日期： | 1992-04-04 |
| 实施日期： | 1992-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 4页 |
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