Product Code:SAE AIR6168
Title:Landing Gear Structural Health Monitoring
Issuing Committee:A-5b Gears, Struts And Couplings Committee
Scope: This Aerospace Information Report (AIR) discusses past and present approaches for monitoring the landing gear structure and shock absorber, methods for transient overload detection, techniques for measuring the forces seen by the landing gear structure, and methods for determining the fatigue state of the landing gear structure.
Rationale: This Aerospace Information Report (AIR) discusses past and present approaches for monitoring the landing gear structure and shock absorber, methods for transient overload detection, techniques for measuring the forces seen by the landing gear structure, and methods for determining the fatigue state of the landing gear structure.【英文标准名称】:Transformersandmotortransformersforuseinaudio-,radio-,andtelevision-typeappliances
【原文标准名称】:音频、无线电和电视类装置用变压器与电机变压器
【标准号】:UL1411-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008-04-16
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:音频系统;音频变压器;自耦变压器;设计;作标记;无线电和相关发声设备;电视设备;电视接收机;测试;变压器;电视工程
【英文主题词】:Audiosystems;Audio-frequencytransformer;Autotransformers;Design;Marking;Radioandassociatedsoundequipment;Televisionequipment;Televisionreceivers;Testing;Transformers;Videoengineering
【摘要】:Thedocumentapplytotransformers,autotransformers,andmotor-transformersintendedtobeusedinaudio-,radio-,andtelevision-typeappliancesinwhichtheprimarywindingisconnectedacrossthesupplycircuit.TherequirementsinSections4-15,23-26,28,and29alsoapplytotransformersintendedforuseinhigh-frequency,switching-typepowersuppliesinwhichthetransformerprovidesisolationfromthesupplycircuit.Theserequirementsdonotapplytotransformersthatareintendedtotransformonlyaudio,video,andothersignalwaveforms.ThosetransformersarecoveredbytheStandardforIsolatingSignalandFeedbackTransformersforUseinElectronicEquipment,UL1876.Theserequirementsapplytoatransformerormotortransformerthatincludesaseparatecurrent-limitingimpedancesuchasapositivetemperaturecoefficient(PTC)devicecomplyingwiththerequirementsforthermistor-typedevices,oraresistorcomplyingwiththeStandardforFusingResistorsandTemperature-LimitedResistorsforRadio-andTelevision-TypeAppliances,UL1412.Aproductthatcontainsfeatures,characteristics,components,materials,orsystemsnewordifferentfromthosecoveredbytherequirementsinthisstandard,andthatinvolvesariskoffireorofelectricshockorinjurytopersonsshallbeevaluatedusingappropriateadditionalcomponentandend-productrequirementstomaintainthelevelofsafetyasoriginallyanticipatedbytheintentofthisstandard.Aproductwhosefeatures,characteristics,components,materials,orsystemsconflictwithspecificrequirementsorprovisionsofthisstandarddoesnotcomplywiththisstandard.Revisionofrequirementsshallbeproposedandadoptedinconformancewiththemethodsemployedfordevelopment,revision,andimplementationofthisstandard
【中国标准分类号】:L17
【国际标准分类号】:29_180
【页数】:
【正文语种】:英语