SAE AS5440 Hydraulic Systems, Aircraft, Design and Installation Requirements For
时间:2024-05-25 02:29:18 来源: 标准资料网 作者：标准资料网 阅读：8347
Product Code:SAE AS5440
Title:Hydraulic Systems, Aircraft, Design and Installation Requirements For
Issuing Committee:
Scope:This specification covers the design and installation requirements for Types I and II aircraft hydraulic systems.
【英文标准名称】:StandardPracticeforCalculatingBendingStrengthDesignAdjustmentFactorsforFire-Retardant-TreatedPlywoodRoofSheathing
【原文标准名称】:火焰阻滞剂处理的胶合板屋顶盖板计算弯曲强度设计调节因素的标准操作规程
【标准号】:ASTMD6305-2002e1
【标准状态】:现行
【国别】:
【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(ASTM)
【起草单位】:D07.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:胶合板;屋顶;抗弯强度;防火剂
【英文主题词】:designloadvalues;fireretardanttreatment;plywood;strengthtest;
【摘要】:Thispracticedevelopstreatmentfactorsthatshallbeusedbyfireretardantchemicalmanufacturerstoadjustbendingstrengthdesignvaluesforuntreatedplywoodtoaccountforthefire-retardanttreatmenteffects.Thispracticeusesdatafromreferencethermal-loadcyclesdesignedtosimulatetemperaturesinslopedroofsofcommondesigntoevaluateproductsfor50iterations.Thispracticeappliestomaterialinstalledusingconstructionpracticesrecommendedbythefireretardantchemicalmanufacturersthatincludeavoidingexposuretoprecipitation,directwetting,orregularcondensation.Thispracticeisnotmeanttoapplytobuildingswithsignificantlydifferentdesignsthanthosedescribedin1.3.TestMethodD5516causedthermallyinducedstrengthlossesinlaboratorysimulationswithinareasonablyshortperiod.Theenvironmentalconditionsusedinthelaboratory-activatedchemicalreactionsthatareconsideredtobesimilartothoseoccurringinthefield.Thisassumptionisthefundamentalbasisofthispractice.1.1Thispracticecoversproceduresforcalculatingbendingstrengthdesignadjustmentfactorsforfire-retardant-treatedplywoodroofsheathing.Themethodsutilizetheresultsofstrengthtestingafterexposureatelevatedtemperaturesandcomputer-generatedthermalloadprofilesreflectiveofexposuresencounteredinnormalserviceconditionsinawidevarietyofclimates.1.2Necessarily,commonlaboratorypracticeswereusedtodevelopthemethodsherein.Itisassumedthattheprocedureswillbeusedforfire-retardant-treatedplywoodinstalledusingappropriateconstructionpracticesrecommendedbythefireretardantchemicalmanufacturers,whichincludeavoidingexposuretoprecipitation,directwetting,orregularcondensation.1.3Theheatgains,solarloads,roofslopes,ventilationrates,andotherparametersusedinthispracticewerechosentoreflectcommonslopedroofdesigns.Thispracticeisapplicabletoroofsof3in12orsteeperslopes,toroofsdesignedwithventareasandventlocationsconformingtonationalstandardsofpracticeandtodesignsinwhichthebottomsideofthesheathingisexposedtoventilationair.Theseconditionsmaynotapplytosignificantlydifferentdesignsandthereforethispracticemaynotapplytosuchdesigns.1.4InformationandabriefdiscussionsupportingtheprovisionsofthispracticeareintheCommentaryintheappendix.Alarge,moredetailed,separateCommentaryisalsoavailablefromASTM.1.5Themethodologyinthispracticeisnotmeanttoaccountforallreportedinstancesoffire-retardantplywoodundergoingprematureheatdegradation.1.6Thispracticeiswrittenininch-poundunitswithSIunitsprovidedinparenthesesforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q17
【国际标准分类号】:91_060_20
【页数】:6P.;A4
【正文语种】:
【英文标准名称】:CCITThighlevellanguage(CHILL)
【原文标准名称】:国际电报电话咨询委员会(CCITT)高级语言(CHILL)
【标准号】:BSISO/IEC9496-1989
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】: