SJ 3058.7-1988 冲裁模通用模架 垫板
时间:2024-05-14 16:57:45 来源: 标准资料网 作者：标准资料网 阅读：8508
基本信息
| 标准名称： | 冲裁模通用模架 垫板 |
| 英文名称： | General die sets for blanking die-Backing plate |
| 中标分类： |
农业、林业 >>
农业、林业综合 >>
技术管理 |
| 发布日期： | 1988-03-28 |
| 实施日期： | 1988-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 农业 林业 农业 林业综合 技术管理
Product Code:SAE AIR1810
Title:Design, Development and Test Criteria-Solid State Proximity Switches/Systems for Landing Gear Applications
Issuing Committee:A-5b Gears, Struts And Couplings Committee
Scope:The purpose of this AIR is to suggest specification, application, performance and validation criteria for solid state proximity switch systems used for environmentally severe applications on aircraft landing gear.【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Comparisonmethodinsitu(ISO3747:2000);EnglishversionofDINENISO3747:2009-11
【原文标准名称】:声学.声压法测定声源的声功率级.现场比较法(ISO3747:2000),ENISO3747:2009的德文版本
【标准号】:DINENISO3747-2009
【标准状态】:作废
【国别】:德国
【发布日期】:2009-11
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Comparison;Comparisonmethods;Definitions;Determination;Insitu;Inspection;Machinenoise;Machines;Measuringaccuracy;Measuringincertainity;Methods;Noise;Noise(environmental);Noiselevels;Noisemeasurements;Noisesources;Operatingconditions;Precision;Safety;Safetyofmachinery;Sonictesting;Soundlevel;Soundlevels;Soundpressure;Soundsources;Specification(approval);Testing;Use
【摘要】:1.1ThisInternationalStandardspecifiesamethodfordeterminingthesoundpowerlevelsofsoundsourcesinsitu,especiallyifnon-movable.Acomparisonmethodisusedandallmeasurementsarecarriedoutinoctavebands.Themeasurementuncertaintydependsonthetestenvironment.Themeasurementuncertaintyisevaluatedbycomparingwithanindicatordescribingthespatialsounddistribution.Theaccuracywilleitherbethatofanengineeringmethodorasurveymethod.Thesoundpowerlevelofthesourceundertestiscalculatedfromthemeasuredvaluesofthesoundpressurelevelsproducedatspecifiedmeasurementpointsbythesourceandbyareferencesoundsource,respectively.Thesoundpowerleveliscalculatedusingthecalibratedvaluesofthereferencesoundsourceandthedifferencesbetweenthevaluesobtainedwiththesourceundertestandthoseofthereferencesoundsource.Allcalculationsarecarriedoutinoctavebands,fromwhichtheA-weightedsoundpowerlevelisdetermined.NOTEFornoisesourceswhichcanbemoved,otherrelevantstandardsintheISO3740seriesmaybeused.1.2ThisInternationalStandardisapplicabletoallkindsoftestenvironmentswhicharetobefoundoutsidealaboratoryenvironment,providedthatthebackgroundnoiselevelissufficientlylowandthesoundpressurelevelatthemicrophonepositionsdependsmainlyonreflectionsfromtheroomsurfaces.NOTEISO3744orISO9614mayprovidealternativemethods.1.3ThisInternationalStandardisprimarilyapplicabletosourceswhichradiatebroad-bandnoise.Itmay,however,alsobeusedforsourceswhichradiatenarrow-bandnoiseordiscretetones,althoughthemeasurementuncertaintymightthenbecomelargerthanstatedherein.NOTEFornoisesourcesemittingstationarynoise,ISO9614maybeusedasanalternative.
【中国标准分类号】:
【国际标准分类号】:17_140_20
【页数】:28P.;A4
【正文语种】:英语