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【英文标准名称】:Acoustics-Recommendedpracticeforthedesignoflow-noisemachineryandequipment-Part2:Introductiontothephysicsoflow-noisedesign
【原文标准名称】:声学低噪声机器和设备设计的推荐实用规程第2部分:低噪声设计的物理工程说明
【标准号】:ISO/TR11688-2-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-09
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:引入线;声学;机器;电动机;噪声抑制;机械噪声;设计;声音传播;低噪声;计划
【英文主题词】:Acoustics;Definitions;Design;Entries;Ergonomics;Lownoise;Machinenoise;Machines;Motors;Noiseabatement;Noisereduction;Physics;Planning;Principlesofdesign;Productdesign;Soundpropagation
【摘要】:ThispartofISO/TR11688providesthephysicalbackgroundforthelow-noisedesignrulesandexamplesgiveninISO/TR11688-1andsupportstheuseofextensivespecialliterature.Itisintendedforusebydesignersofmachineryandequipmentaswellasusersand/orbuyersofmachinesandauthoritiesinthefieldoflegislation,supervisionorinspection.EquationsgiveninthisTechnicalReportwillimprovethegeneralunderstandingofnoisecontrol.Inmanycasestheyallowacomparisonofdifferentversionsofdesign,buttheyarenotusefulforthepredictionofabsolutenoiseemissionvalues.Informationoninternalsoundsources,transmissionpathsandsoundradiatingpartsofamachineisthebasisfornoisecontrolinmachines.Thereforemeasurementmethodsandcomputationalmethodssuitabletoobtainthisinformationaredescribedinclauses7and8andannexA.note:1)ISO/TR11688-1:1995,Acoustics—Recommendedpracticeforthedesignoflow-noisemachineryandequipment—Part1:Planning.
【中国标准分类号】:Z67
【国际标准分类号】:17_140_20;21_020
【页数】:46P.;A4
【正文语种】:英语


【英文标准名称】:SpecificationforSteelForgings,GeneralRequirements
【原文标准名称】:钢锻件规范.一般要求
【标准号】:ANSI/ASTMA788-1998
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:锻件;钢;规范(验收)
【英文主题词】:specification(approval);steels;forgings
【摘要】:Thisspecificationcoversagroupofcommonrequirementsthat,unlessotherwisespecifiedintheindividualmaterialspecification,shallapplytosteelforgingsunderanyofthefollowingspecificationsissuedbyASTM:ASTMDesignationTitleA266Forgings,CarbonSteelforPressureVesselComponentsA288CarbonandAlloySteelForgingsforMagneticRetainingRingsforTurbineGeneratorsA289AlloySteelForgingsforNonmagneticRetainingRingsforGeneratorsA290CarbonandAlloySteelForgingsforRingsforReductionGearsA291CarbonandAlloySteelForgingsforPinionsandGearsforReductionGearsA294AlloySteelForgingsforTurbineWheelsandDisksA336SteelForgingsAlloy,forPressureandHigh-TemperaturePartsA372CarbonandAlloySteelForgingsforThin-WalledPressureVesselsA427WroughtAlloySteelRollsforColdandHotReductionA469Vacuum-TreatedSteelForgingsforGeneratorRotorsA470Vacuum-TreatedCarbonandAlloySteelForgingsforTurbineRotorsandShaftsA471Vacuum-TreatedAlloySteelForgingsforTurbineRotorDisksandWheelsA508/A508MQuenchedandTemperedVacuum-TreatedCarbonandAlloySteelForgingsPressureVesselsA521SteelClosed-ImpressionDieForgingsforGeneralIndustrialUseA541/A541MSteelForgings,CarbonandAlloy,QuenchedandTempered,forPressureVesselComponentsA579SuperstrengthAlloySteelForgingsA592High-StrengthQuenchedandTemperedLow-AlloySteelForgedFittingsandPartsforPressureVesselsA649/A649MForgedSteelRollsUsedforCorrugatingPaperMachineryA654SpecialRequirementsforForgingsandBarsforNuclearandOtherSpecialApplicationsA668/A668MSteelForgingsCarbonandAlloyforGeneralIndustrialUseA723/A723MAlloySteelForgingsforHigh-StrengthPressureComponentApplicationA765/A765MCarbonSteelandLow-AlloySteelPressureVesselComponentForgingswithMandatoryToughnessRequirementsA768Vacuum-Treated12%ChromiumAlloySteelForgingsforTurbineRotorsandShaftsA837SteelForgings,Alloy,ForCarburizingApplicationsA859/A859MSteelForgings,Low-CarbonAge-HardeningNickel-Copper-Chromium-MolybdenumAlloySteel,forPressureVesselComponentsA891PrecipitationHardeningIronBasicSuperalloyForgingsforTurbineRotorDisksandWheels.Incaseofconflictinrequirements,therequirementsoftheindividualmaterialspecificationsshallprevailoverthoseofthisspecification.Thepurchasermayspecifyadditionalrequirements(see4.2.3)thatdonotnegateanyoftheprovisionsofeitherthisspecificationoroftheindividualmaterialspecifications.Theacceptanceofanysuchadditionalrequirementsshallbedependentonnegotiationswiththesupplierandmustbeincludedintheorder.If,byagreement,forgingsaretobesuppliedinapartiallycompletedcondition,thatis,alloftheprovisionsoftheproductspecificationhavenotbeenfilled,thenthematerialmarking(seeSection16)andcertification(seeSection17)shallreflecttheextenttowhichtheproductspecificationrequirementshavebeenmet.
【中国标准分类号】:J32
【国际标准分类号】:77_140_85
【页数】:
【正文语种】:英语