【英文标准名称】:Aircraftgroundsupportequipment-Generalrequirements-Part1:Basicsafetyrequirements(includesAmendmentA1:2009);EnglishversionofDINEN1915-1:2009-06
【原文标准名称】:飞机地面支持设备的一般要求.第1部分:基本安全要求(含修改件A1-2009),英文版本DINEN1915-1-2009-06
【标准号】:EN1915-1-2009
【标准状态】:现行
【国别】:
【发布日期】:2009-06
【实施或试行日期】:2009-06-01
【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】:航空工程;航空设备;航空航天运输;航空运输;航空器地面支持设备;控制;控制设备;定义;地面站;一般条件;地面设备;危害;表;安全性;安全措施;机械安全性;安全性要求;航天运输;规范(验收);指示器;用户信息
【英文主题词】:Aeronauticalengineering;Aeronauticalequipment;Aerospacetransport;Airtransport;Aircraftgroundsupportequipments;Control;Controlequipment;Definitions;Earthstations;Generalconditions;Groundequipment;Hazards;Lists;Safety;Safetymeasures;Safetyofmachinery;Safetyrequirements;Spacetransport;Specification(approval);Telltales;Userinformation
【摘要】:
【中国标准分类号】:V56
【国际标准分类号】:49_100
【页数】:51P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodtoDetermineMeltingTemperatureofSyntheticFibers
【原文标准名称】:确定合成纤维熔融温度标准试验方法
【标准号】:ASTMD7138-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D13.51
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:differentialscanningcalorimetry;melting;syntheticfibers;Differentialscanningcalorimetry(DSC);Melting;Syntheticfabrics;Textilefibers
【摘要】:Eitherofthesetwotestmethodsisusedtodeterminethetemperatureatwhichasyntheticfiberspecimenchangesfromasolidtoaliquid-likestate.Syntheticfibersmaybeeitheramorphousorsemi-crystallinethermoplasticsorthermosets.Syntheticfibersmaychangefromthesolidtoaliquid-likestateonheatingbecauseoftheglasstransitionofamorphouspolymers,themeltingofcrystallineregionsofsemi-crystallinepolymers,orattheonsetofdegradation.Thermoplasticfibersconsistofcrystallineandamorphousregionsandmaybemanufacturedwitharangeofmolecularweights.Theamorphousandcrystallinefiberstructureandvariablemolecularweightcanleadtoameltingtemperaturerangeinsteadofadiscreetmeltingpoint(seeTableX1.1).Thistestmethodisconsideredsatisfactoryforacceptancetestingofcommercialshipments.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwoormorelaboratories,performcomparativetestingtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,usethesamplesforsuchacomparativetestthatareashomogeneousaspossible,drawnfromthesamelotofmaterialasthesamplesthatresultedindisparateresultsduringinitialtestingandrandomlyassignedinequalnumberstoeachlaboratory.Comparethetestresultsfromthelaboratoriesinvolvedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifbiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Thistestmethodissuitableforqualitycontroltestingofsyntheticfibersandproductcomparisonsofdifferentfibersbymanufacturers,retailers,andusers.Ifthetestmethodisusedtoidentifyfibermaterialtype,itisimportanttotestaknownreferencematerialatthesamelaboratorywiththesametestmethodtoconfirmthefiberidentification.Inaddition,sincesomefibertypeshavesimilarmeltingtemperaturesoroverlappingmeltingtemperaturerangesasshowinTableX1.1,secondarymethodsforfiberidentificationasdescribedinTestMethodsD276willberequiredtomakefiberidentifications.1.1Eitheroftwotestmethodsareusedtodeterminethemeltingtemperatureofthermoplasticfibers,yarns,orthreads.1.2Method1canbeusedtodeterminemeltingtemperaturesforblendsofmultiplefibermaterialtypes.Method2canonlybeusedtodeterminethemeltingtemperatureofasinglefibermaterialtype.1.2.1Method1,DifferentialScanningCalorimetry(DSC),measureschangesinheatcapacityandwilldetecttheglasstransition,thecrystallinemeltingandendothermicthermaldegradation.1.2.2Method2,avisualdeterminationofmelting,determinesanychangethatvisuallyappearsasatransitionfromasolidtoaliquidstate.1.2.3Duetothedifferencesinwhateachtestmethodmeasures,theresultsfromMethod1andMethod2cannotbecompared.1.3ThevaluesstatedineitherSIunitsorotherunitsaretoberegardedseparately.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlywithoutcombiningvalues.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W50
【国际标准分类号】:59_060_20
【页数】:5P.;A4
【正文语种】:英语