SAE AMSC8073 Core Material, Plastic Honeycomb, Laminated Glass Fabric Base, for Aircraft Structural and Electronic Appli
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来源:标准资料网
Product Code:SAE AMSC8073
Title:Core Material, Plastic Honeycomb, Laminated Glass Fabric Base, for Aircraft Structural and Electronic Applications
Issuing Committee:Ams P17 Composite Materials Committee
Scope:This specification covers the requirements for glass fabric base plastic honeycomb core materials for aircraft structural applications, including aircraft exterior parts, such as radio and radar antenna housings, and other parts.
【英文标准名称】:StandardTestMethodforAutomaticParticleCountingofLubricatingandHydraulicFluidsUsingDilutionTechniquestoEliminatetheContributionofWaterandInterferingSoftParticlesbyLightExtinction
【原文标准名称】:使用稀释法通过消光法消除水分和干扰软颗粒的润滑和液压液体的自动颗粒计数的标准试验方法
【标准号】:ASTMD7647-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D02.96.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:automaticparticlecounter;diluent;emulsifiedwater;particlecontamination;particlecounting;softparticles;water-masking
【摘要】:Thistestmethodisintendedforuseinanalyticallaboratoriesincludingonsitein-serviceoilanalysislaboratories.Hardparticlesinlubricatingorfluidpowersystemshaveadetrimentaleffectonthesystemastheycauseoperatingcomponentstowearandalsoacceleratethedegradationoftheoil.Hardparticlesintheoiloriginatefromavarietyofsourcesincludinggenerationfromwithinanoperatingfluidsystemorcontamination,whichmayoccurduringthestorageandhandlingofnewoilsorviaingressintoanoperatingfluidsystem.Highlevelsofcontaminantscancausefilterblockagesandhardparticlescanhaveaseriousimpactonthelifeofpumps,pistons,gears,bearings,andothermovingpartsbyacceleratingwearanderosion.Particlecountresultscanbeusedtoaidinassessingthecapabilityofthefiltrationsystemresponsibleforcleaningthefluid,determiningifoff-linerecirculatingfiltrationisneededtocleanupthefluidsystem,oraidinginthedecisionofwhetherornotafluidchangeisrequired.Toaccuratelymeasurehardparticlecontaminationlevels,itisnecessarytonegatetheparticlecountscontributedbythepresenceofsmalllevelsoffreewater.Thismethodincludesaprocessbywhichthiscanbeaccomplishedusingawater-maskingdiluenttechniquewherebywaterdropletsofasizebelowthetargetlevelarefinelydistributed.Certainadditivesoradditiveby-productsthataresemi-insolubleorinsolubleinoil,namelythepolydimethylsiloxanedefoamantadditiveandoxidationby-products,areknowntocauselightscatteringinautomaticparticlecounters,whichinturncausesfalselyhighcounts.Theseandsimilarmaterialsarecommonlytermedx201C;softparticlesx201D;(see3.1.5)andarenotknowntodirectlyincreasewearanderosionwithinanoperatingsystem.Thecontributionoftheseparticlestotheparticlesizecumulativecountisnegatedwiththismethod.Theuseofdilutioninthistestmethodcounteractsviscosityeffectsforhighlyviscousoilsthatimpacttheaccuracyofautomaticopticalparticlecountingresults.1.1Thistestmethodcoversthedeterminationofparticleconcentrationandparticlesizedistributioninnewandin-serviceoilsusedforlubricationandhydraulicpurposes.1.2Particlesconsideredareintherangefrom4x00B5;m(c)to200x00B5;m(c)withtheupperlimitbeingdependentonthespecificautomaticparticlecounterbeingused.Note18212;Forthepurposeofthistestmethod,waterdropletsnotmaskedbythediluentprocedurearedetectedasparticles,andagglomeratedparticlesaredetectedandreportedasasinglelargerparticle.Note28212;Thesubscript(c)isusedtodenotethattheapparatushasbeencalibratedinaccordancewithISO11171.Thissubscript(c)strictlyonlyappliestoparticlesupto50x00B5;m.1.3Lubricantsthatcanbeanalyzedbythistestmethodarecategorizedaspetroleumproductsorsyntheticbasedproducts,suchas:polyalphaolefin,polyalkyleneglycol,orphosphateester.Applicableviscosityrangeisupto1000mm2/s@40x00B0;C.Thisproceduremaybeappropriateforotherpetroleumandsyntheticbasedlubricantsnotincludedintheprecisionstatement.1.4Samplescontainingvisibleparticlesmaynotbesuitableforanalysisusingthistestmethod.1.5Samplesthatareopaqueafterdilutionarenotsuitableforanalysisusingthistestmethod.1.6Thetestm......
【中国标准分类号】:N55
【国际标准分类号】:75_120
【页数】:9P.;A4
【正文语种】:英语
【英文标准名称】:Chemicalsusedfortreatmentofwaterintendedforhumanconsumption-Sodiumsilicate
【原文标准名称】:人生活用水的水处理用化学物质.硅酸钠
【标准号】:BSEN1209-1998
【标准状态】:作废
【国别】:英国
【发布日期】:1998-02-15
【实施或试行日期】:1998-02-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【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】:G77
【国际标准分类号】:71_100_80
【页数】:12P;A4
【正文语种】:英语
