【英文标准名称】:StandardGuideforSelectionofTestMethodsforInterlayerMaterialsforAerospaceTransparentEnclosures
【原文标准名称】:航天透明外壳用的夹层材料试验方法选择的标准指南
【标准号】:ASTMF942-2002(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:aerospace;interlayermaterials;laminates;transparentenclosures;Aerospacetransparentenclosures;Glassaerospacematerials/applications;Interlayermaterials;Laminates(aerospace);Structuralsandwichconstructions
【摘要】:Thisguideisintendedforusebymaterialsuppliers,aircrafttransparentenclosurefabricators,airframemanufacturers,governmentagencies,andothersthatmaybecomeinvolvedinthetestingoftransparentinterlayermaterials.Thesetestmethodsprovidedataonbothindividualinterlayermaterialsandmaterialcombinationscommonlyusedinthefabricationofaerospacetransparentenclosuresandprovideameansofevaluatingtheperformanceofoneinterlayermaterialagainstanother.Primarycharacteristicsandtheirlong-termstabilityarecriticaltotheperformanceofaninterlayermaterial.Basictestsdefinetheas-manufacturedmaterialcharacteristicsoftheinterlayermaterial.Ageingproceduresprovideforrepresentativeexposuretoenvironmentsthatmayinducechangesinmaterialcharacteristics.Testsperformedbeforeandafterageingexposureprovideameansofestimatingthepotentialuseablelife-spanofaninterlayermaterialortocomparethedurabilityofoneinterlayermaterialwithanother.Whenemployingthesetestmethodsforthecomparisonofinterlayermaterialsafterexposuretoselectedenvironmentalconditions,theusershallbeawarethatmanyfactorsinfluencingdegradationduetoweatheringvaryfromonelocationandexposureperiodtoanotherlocationandexposureperiod.Fordirectweatheringcomparisons,theinterlayermaterialstobecomparedshallbesubjectedtotheexposureandhavethetestsperformedatthesametime.Itisemphasizedthatthetestvaluesobtainedunderthesesimultaneouslyappliedconditionsareforcomparativeuseandtheiruseasdesigncharacteristicsshallbemadewithcaution.Thetestmethodslistedincludethoseconsideredcriticaltotheperformanceofaircrafttransparentenclosures.Theuserisadvisedtousethelatestrevisionofanytestmethod.1.1Thisguidesummarizesthestandardtestmethodsavailablefordeterminingphysicalandmechanicalcharacteristicsofinterlayermaterialsusedinmulti-plyaerospacetransparentenclosures.1.2Interlayermaterialsareusedtolaminateglass-to-glass,glass-to-plastic,andplastic-to-plastic.Interlayermaterialsarebasicallytransparentadhesiveswithhigh-qualityopticalproperties.Theycanalsoserveasanenergyabsorbingmedium,afail-safemembranetocontaincockpitpressureandtoprevententryofimpactdebris;astraininsulatortoaccommodatedifferentthermalexpansionratesofmembersbeinglaminatedandasanadherenttopreventspallingofinnersurfaceplymaterialfragments.Therelativeimportanceofaninterlayercharacteristicwillbeafunctionoftheprimeuseitservesinitsparticularapplication.1.3Thisguide,asasummaryofvariousmethodsinSection2,isintendedtofacilitatetheselectionofteststhatcanbeappliedtointerlayermaterials.1.4Thetestmethodslistedareforuseindeterminingbasicdesigncharacteristicsandinassuringlot-to-lotuniformityofthematerialsbeingtestedexceptasnotedin3.3.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:V10
【国际标准分类号】:49_025_50
【页数】:2P.;A4
【正文语种】:英语