【英文标准名称】:Aerospaceseries-Elementsofelectricalandopticalconnection;Testmethods-Part708:Electricalelements;Measurementofsurfacetransferimpedanceofcouplers;GermanandEnglishversionEN2591-708:2001
【原文标准名称】:航空航天系列.光电连接件.试验方法.第708部分:电气元件.耦合器表面传输阻抗测量
【标准号】:EN2591-708-2001
【标准状态】:现行
【国别】:
【发布日期】:2002-10
【实施或试行日期】:
【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】:测试条件;编织外壳;耦合器;阻抗;规范(验收);多语种的;电气元件;航天运输;特性;;测量技术;光学的;测试;电插头;电的;电力设备;紧固件;航空运输;测量;航空航天运输
【英文主题词】:Aerospacetransport;Airtransport;Braidshieldings;Couplers;Electricplugs;Electrical;Electricalcomponents;Electricalinstallations;Fasteners;Impedance;Measurement;Measuringtechniques;Multilingual;Optical;Properties;Spacetransport;Specification(approval);Testing;Testingconditions;Transferimpedance
【摘要】:
【中国标准分类号】:V20
【国际标准分类号】:49_060
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:Plastics-Preparationoftestspecimensofthermoplasticmaterialsusingmouldlesstechnologies-Part1:Generalprinciples,andlasersinteringoftestspecimens
【原文标准名称】:塑料.使用无模工艺的热塑材料试样的制备.第1部分:一般原则和试样的激光烧结
【标准号】:ISO27547-1-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-09-15
【实施或试行日期】:2010-09-15
【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】:定义;激光光束闪光管;激光束;激光器;塑料;性能;烧结;试样制备;样品;试验准备;试样;热塑性的;热塑性聚合物
【英文主题词】:Definitions;Laserbeammachines;Laserbeams;Lasers;Plastics;Properties;Sintering;Specimenpreparation;Specimens;Testpreparation;Testspecimens;Thermoplastic;Thermoplasticpolymers
【摘要】:ThispartofISO27547specifiesthegeneralprinciplesoftest-specimenpreparationusingmouldlesstechniques.Sometimes,thesetechniquesarecalled“tool-less”methods.Commontoallthesetechniquesisthefactthatthespecimensareproducedlayerbylayer.TheshapeanddimensionsofthespecimensaredefinedintermsofanumericaldescriptionusingCADtechniques.Thiscomputermodelofthespecimenis“sliced”intolayersbymeansofsuitablesoftware.Thespecimen-preparationprocessthenbuildsupthespecimensautomatically,layerbylayer,usingthecomputermodelandasuitablecomputer-controlledlasersinteringmachine.Thethreesoftwaresystemsused(forCAD,slicingthespecimenintolayersandmachinecontrol)maybeindependentsystemsinterfacingseparatelywiththemachineortheymaybeintegratedwiththemachine.ThispartofISO27547alsospecifiesthegeneralprinciplestobefollowedwhentestspecimensofthermoplasticmaterialsarepreparedbylasersintering.Thelaser-sinteringprocessisusedtopreparespecimenslayer-wisebysinteringtheparticlesofathermoplasticpowderusingtheenergyofalaserbeam.ThispartofISO27547providesabasisforestablishingreproduciblesinteringconditions.Itspurposeistopromoteuniformityindescribingthemainparametersofthesinteringprocessandalsotoestablishuniformpracticeinreportingsinteringconditions.Theparticularconditionsrequiredforreproduciblepreparationoftestspecimenswhichwillgivecomparableresultswillvaryforeachmaterialused.TheseconditionsshallbeasgivenintheInternationalStandardfortherelevantmaterialorshallbeagreeduponbetweentheinterestedparties.
【中国标准分类号】:G32
【国际标准分类号】:83_080_20
【页数】:18P.;A4
【正文语种】:英语