ASTM D2512-1995(2008) 材料与液氧兼容性的标准试验方法(冲击敏感阀与可靠性技术)

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【英文标准名称】:StandardTestMethodforCompatibilityofMaterialswithLiquidOxygen(ImpactSensitivityThresholdandPass-FailTechniques)
【原文标准名称】:材料与液氧兼容性的标准试验方法(冲击敏感阀与可靠性技术)
【标准号】:ASTMD2512-1995(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:G04.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compatibilityofmaterials;impactsensitivitythreshold;liquidoxygen;pass-failtechniques;ABMAtester;Aerospacerocketpropellants;Compatibility--aerospacematerials;Flammability--aerospacematerials;Ignition--aerospacematerials;Impactsensi
【摘要】:Whenthistestmethodisusedtomeasurethethresholdimpactsensitivityofamaterial,arelativesensitivityassessmentisobtainedwhichpermitstherankingofmaterials.Thistestmethodmayalsobeusedforacceptance-testingmaterialsforuseinliquidoxygensystems.Twentyseparatesamplesofthematerialsubmergedinliquidoxygenaresubjectedto98J(72ftx00B7;lbf)orasspecified.Impactenergydeliveredthrougha12.7-mm(x00BD;-in.)diametercontact.Morethanoneindicationofsensitivityiscauseforimmediaterejection.Asingleexplosion,flash,orotherindicationofsensitivityduringtheinitialseriesof20testsrequiresthatanadditional40samplesbetestedwithoutincidenttoensureacceptabilityofthematerial.Thethresholdvaluesaredeterminedbythistestmethodatambientpressure.Thesensitivityofmaterialstomechanicalimpactisknowntoincreasewithincreasingpressure.Sincemostliquidoxygensystemsoperateatpressuresaboveambientcondition,someconsiderationshouldbegiventoincreasedsensitivityandreactivityofmaterialsathigherpressurewhenselectingmaterialsforuseinpressurizedsystem.1.1Thismethod,,coversthedeterminationofcompatibilityandrelativesensitivityofmaterialswithliquidoxygenunderimpactenergyusingtheArmyBallisticMissileAgency(ABMA)-typeimpacttester.Materialsthatareimpact-sensitivewithliquidoxygenaregenerallyalsosensitivetoreactionbyotherformsofenergyinthepresenceofoxygen.1.2Thisstandardshouldbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardorfireriskofmaterials,products,orassembliesunderactualfireconditions.However,resultsofthistestmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofaparticularenduse.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:V10
【国际标准分类号】:49_025_01
【页数】:12P.;A4
【正文语种】:英语