MH/T 9003-2008 电声学 航空噪声测量仪器 在运输类飞机噪声合格评定中测量1/3宽带倍频声压级装置的性能要求
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基本信息
| 标准名称： | 电声学 航空噪声测量仪器 在运输类飞机噪声合格评定中测量1/3宽带倍频声压级装置的性能要求 |
| 发布部门： | 中国民用航空局 |
| 发布日期： | 2008-10-20 |
| 实施日期： | 2009-02-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2009-02-01 |
适用范围
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前言
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引用标准
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所属分类： 航空 航天 航空运输与地面设备 货运 社会学 服务 公司(企业)的组织和管理 行政 运输 运输 航空运输
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【英文标准名称】:Factory-Made,WroughtSteel,ButtweldingInductionBendsforTransportationandDistributionSystems
【原文标准名称】:传输和分配系统用工厂制锻钢对焊感应管弯头
【标准号】:ASMEB16.49-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007-01-01
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:弯管联接器;管弯头;对接焊;直径;感应焊接;管道;管;预制的;有缝管;无缝管;钢部件;钢管;锻制品
【英文主题词】:Bendcouplings;Bends;Buttwelding;Diameter;Inductionwelding;Pipelines;Pipes;Prefabricated;Seamedpipes;Seamlesspipes;Steelcomponents;Steelpipes;Wroughtproducts
【摘要】:ThisStandardcoversdesign,material,manufacturing,testing,marking,andinspectionrequirementsforfactory-madepipelinebendsofcarbonsteelmaterialshavingcontrolledchemistryandmechanicalproperties,producedbytheinductionbendingprocess,withorwithouttangents.ThisStandardcoversinductionbendsfortransportationanddistributionpipingapplications(e.g.,ASMEB31.4,B31.8,andB31.11)Processandpowerpipinghavedifferingrequirementsandmaterialsthatmaynotbeappropriatefortherestrictionsandexaminationsdescribedherein,andthereforearenotincludedinthisStandard.
【中国标准分类号】:J15
【国际标准分类号】:23_040_40
【页数】:24P.;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
【原文标准名称】:传输和分配系统用工厂制锻钢对焊感应管弯头
【标准号】:ASMEB16.49-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007-01-01
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:ASME
【标准类型】:()
【标准水平】:()
【中文主题词】:弯管联接器;管弯头;对接焊;直径;感应焊接;管道;管;预制的;有缝管;无缝管;钢部件;钢管;锻制品
【英文主题词】:Bendcouplings;Bends;Buttwelding;Diameter;Inductionwelding;Pipelines;Pipes;Prefabricated;Seamedpipes;Seamlesspipes;Steelcomponents;Steelpipes;Wroughtproducts
【摘要】:ThisStandardcoversdesign,material,manufacturing,testing,marking,andinspectionrequirementsforfactory-madepipelinebendsofcarbonsteelmaterialshavingcontrolledchemistryandmechanicalproperties,producedbytheinductionbendingprocess,withorwithouttangents.ThisStandardcoversinductionbendsfortransportationanddistributionpipingapplications(e.g.,ASMEB31.4,B31.8,andB31.11)Processandpowerpipinghavedifferingrequirementsandmaterialsthatmaynotbeappropriatefortherestrictionsandexaminationsdescribedherein,andthereforearenotincludedinthisStandard.
【中国标准分类号】:J15
【国际标准分类号】:23_040_40
【页数】:24P.;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