【英文标准名称】:StandardGuideforTestingMaterialsforAerospacePlasticTransparentEnclosures
【原文标准名称】:航空航天塑料透明外壳用试验材料的标准规范
【标准号】:ASTMF790-2008
【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】:F07.08
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:abrasion;acrylic;adhesion;aerospace;bonding;electrical;enclosures;environmental;impact;interlayers;materials;mechanical;optical;physical;plastic;polycarbonate;properties;thermal;transparent;Acrylicplastics;Aerospacetra
【摘要】:Thisguideisintendedforusebymaterialsuppliers,aircrafttransparentenclosurefabricators,air-framemanufacturers,governmentagencies,andothersthatmaybecomeinvolvedinthetestingoftransparencycomponents.Thesetestmethodsprovidedataonbothindividualmaterialsandmaterialcombinationscommonlyutilizedinthefabricationsofaerospacetransparentenclosurescomprisedofmonolithicplastic,coatedmonolithicplasticorlaminatedconstructionscontainingplastics.Primarypropertiesandtheirlongtermstabilityarecriticaltotheperformanceofaerospacetransparentenclosures.Propertymeasurementtestsdefineas-manufacturedmaterialpropertiesofthesematerials.Agingproceduresprovideforexposureofpartsorrepresentativesectionstoenvironmentsthatmayinducechangesinmaterialpropertiesasdeterminedinpropertymeasurementtests.Propertymeasurementtestsperformedbeforeandafteragingexposureprovideameansofestimatingthepotentialusablelifespanofatransparencyortocomparethedurabilityofonematerialwithanother.Whenemployingthesetestmethodsforcomparisonofmaterialsforweatheringeffectstheusershouldbeawarethatthemanyfactorsinfluencingdegradationduetoweatheringvaryfromonelocationtoanother.Fordirectweatheringcomparisons,allmaterial(s)shouldundergoexposureconditionsandpropertymeasurementstestingatthesametime.Thetestmethodslistedincludethoseconsideredcriticaltotheperformanceofaircrafttransparentenclosures.Othertestmethodstoevaluatematerialsmayalsobeperformed.Additionaltestmethodsareinpreparationandwillbeincorporated.Theuserisadvisedtoemploythelatestrevisionofanytestmethod.Thedominantcomponentofalltransparentenclosuresisone,ormore,rigidtransparentsheet(s).Thesheet(s)mustpermitthenecessaryvisibilitywhileprovidingstructuralintegrityandprotectingtheaircraftinteriorfromexternalenvironmentsasrequiredbythespecificaircraftdesign.Initsmostsimpleform,therigidtransparentsheetmaybetheonlycomponentofatransparentenclosure.Whenmorethanonerigidtransparentsheetisemployed,thesheetsarelaminatedwithacontrolledthicknesswitheitheranairgaporwithatransparentadhesiveknownasaninterlayer.Transparentenclosuredesignsmayusemultiplerigidtransparentsheetstotakeadvantageofspecificpropertiesofdifferentmaterials.Inthisinstance,therewillbefunctionsrequiredofoneofthesheetsbutnottheother.Thetestmethods,practicesandguideslistedareasummaryoftheavailabletestmethodsapplicabletoplastictransparentenclosures.Theyarepresentedinthisformattosimplifythesearchandtoenabletheusertodetermineifamethodapplicabletohisrequirementsisavailable.1.1Thisguideisintendedtosummarizethestandardtestmethodsavailableonindividualandcompositematerialsutilizedinfabricationofaerospaceplastictransparentenclosures.Assuch,itisintendedtospecificallyincludetransparentthermoplastics,transparentelastomers,andreinforcedplastics,whetherthermoplasticorthermosetting.1.2ThisguideisintendedasanaidinthesearchfortestmethodspertinenttoAerospacePlasticTransparentEnclosures.Itshouldbeunderstoodthatallmethodslistedmaynotapplytoallenclosures.1.3ThestandardsincludedrefertothepropertiesoraspectslistedinTable1.Thepropertiesoraspectsarelistedinalphabeticalorderandthedescriptionsusedareintendedtofacilitatethesearch.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddetermi......
【中国标准分类号】:V13
【国际标准分类号】:49_045
【页数】:3P.;A4
【正文语种】:英语
基本信息
标准名称: | 电工名词术语 水轮机 泵水轮机和蓄能泵 |
中标分类: |
电工 >>
电工综合 >>
基础标准与通用方法 |
替代情况: | 被GB/T 2900.45-1996代替 |
发布日期: | |
实施日期: | 1984-06-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 44页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 电工 电工综合 基础标准与通用方法