DIN EN 61753-053-3-2004 纤维光学互连器件和无源元件性能标准.第053-3部分:U类连续可变衰减器.非受控环境
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【英文标准名称】:Fibreopticinterconnectingdevicesandpassivecomponentsperformancestandard-Part053-3:ContinuouslyvariableattenuatorsforcategoryU-Uncontrolledenvironment(IEC61753-053-3:2004);GermanversionEN61753-053-3:2004
【原文标准名称】:纤维光学互连器件和无源元件性能标准.第053-3部分:U类连续可变衰减器.非受控环境
【标准号】:DINEN61753-053-3-2004
【标准状态】:现行
【国别】:德国
【发布日期】:2004-10
【实施或试行日期】:2004-10-01
【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】:电插头;电子设备及元件;光波导;性能;组件;纤维光学;环境条件;测量;单模纤维;电气工程;最低要求;衰减;玻璃纤维电缆;连接工艺;初始验证;试验;紧固件;规范(验收);电缆
【英文主题词】:
【摘要】:ThispartofIEC61753containstheminimuminitialtestandmeasurementrequirementsandseveritieswhichafibreopticattenuatormustsatisfyinordertobecategorisedasmeetingtherequirementsofsinglemodefibrepigtailedstylecontinuouslyvariableattenuatordevicesusedinuncontrolledenvironments.
【中国标准分类号】:M33
【国际标准分类号】:33_180_20
【页数】:14P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforAmbientTemperatureFatigueLifeofMetallicBondedResistanceStrainGages
【原文标准名称】:金属粘合抗应变仪的环境温度疲劳寿命的标准试验方法
【标准号】:ASTME1949-2003
【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】:E28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:疲劳;机械试验;应变仪;应变;试验方法
【英文主题词】:ambient;fatiguelife;straingage
【摘要】:Straingagesarethemostwidelyuseddevicesformeasuringstrainsandforevaluatingstressesinstructures.Inmanyapplicationsthereareoftencyclicloadswhichcancausestraingagefailure.Performanceparametersofstraingagesareaffectedbyboththematerialsfromwhichtheyaremadeandtheirgeometricdesign.Thedeterminationofmoststraingageparametersrequiresmechanicaltestingthatisdestructive.Sincegagestestedforfatiguelifecannotbeusedagain,itisnecessarytotreatdatastatistically.Ingeneral,longerandwidergageswithlowerresistanceswillhavegreaterfatiguelife.Optionaladditionstogages(integralleadsareanexample)willoftenreducefatiguelife.Tobeused,straingagesmustbebondedtoastructure.Goodresults,particularlyinafatigueenvironment,dependheavilyonthematerialsusedtocleanthebondingsurface,tobondthegage,andtoprovideaprotectivecoating.Skilloftheinstallerisanothermajorfactorinsuccess.Finally,instrumentationsystemsmustbecarefullyselectedandcalibratedtoensurethattheydonotundulydegradetheperformanceofthegages.Thistestmethodencompassesonlyfullyreversedstraincycles.Fatiguefailureofastraingagemaynotinvolvevisiblecrackingorfractureofthegage,butmerelysufficientzeroshifttocompromisetheaccuracyofthegageoutputforstaticstraincomponents.1.1Thistestmethodcoversauniformprocedureforthedeterminationofstraingagefatiguelifeatambienttemperature.Asuggestedtestingequipmentdesignisincluded.1.2Thistestmethoddoesnotapplytoforcetransducersorextensometersthatusebondedresistancestraingagesassensingelements.1.3Straingagesarepartofacomplexsystemthatincludesstructure,adhesive,gage,leadwires,instrumentation,and(often)environmentalprotection.Asaresult,manythingsaffecttheperformanceofstraingages,includingusertechnique.Afurthercomplicationisthatstraingages,onceinstalled,normallycannotbereinstalledinanotherlocation.Therefore,itisnotpossibletocalibrateindividualstraingages;performancecharacteristicsarenormallypresentedonastatisticalbasis.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortoitsuse.
【中国标准分类号】:N51
【国际标准分类号】:19_060
【页数】:5P.;A4
【正文语种】:
【英文标准名称】:DefinitionsofTermsRelatingtoWood-BaseFiberandParticlePanelMaterials
【原文标准名称】:与木基纤维和刨花板材料相关的名词术语定义
【标准号】:ASTMD1554-1986
【标准状态】:作废
【国别】:美国
【发布日期】:1986
【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】:术语;施工材料;建筑;木材;纤维;定义
【英文主题词】:fibres;terminology;constructionmaterials;construction;wood;definitions
【摘要】:
【中国标准分类号】:B70
【国际标准分类号】:79_060_20
【页数】:4P;A4
【正文语种】:英语
