MIL-T-18607A, MILITARY SPECIFICATION, THERMAL ANTI-ICING EQUIPMENT, WING AND EMPENNAGE (31 MAR 1955) [SUPERSEDING SR-105B)., This specification covers the general requirements for the and performance of thermal anti-icing equipment for the wings and empennage surfaces in aircraft.【英文标准名称】:StandardTestMethodforLaboratoryTestingofPolyethylene(PE)ButtFusionJointsusingTensile-ImpactMethod
【原文标准名称】:通过拉力冲击法实验室测试聚乙烯(PE)熔接接头的用标准试验方法
【标准号】:ASTMF2634-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:F17.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:对接接头;熔化;冲击;连接;实验室试验;PE;管道配件;管道;管;塑料配件;聚乙烯;测试
【英文主题词】:buttfusion;buttfusionjointtest;tensile-impact;ruptureenergy;yieldenergy
【摘要】:Thistestmethodisdesignedtoimparttensileimpactenergytoabuttfusedplasticpipespecimen,recordtheenergytofailthespecimenandplottheloadovertimecurveofthetensiletest.Energyrecordedatyieldandruptureandtherupturemode(brittleorductile)areusedascriteriaintheevaluationofthebuttfusionjoint.Theevaluationoftheforce/timecurvenotonlymakesitpossibletocomparedifferentbuttfusionparametersbutalsotoevaluatetherupturemodeofthespecimentodeterminejointintegrity.Eachcouponrsquo;testresultswillusuallybecomparedtotestresultsforcouponsmachinedfromthebasepipematerial,un-fused.4.1.1Thesedataarealsousefulforqualitativecharacterizationandforresearchanddevelopment.Formanymaterials,theremaybeaspecificationthatrequirestheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Tensilepropertiesmayvarywithspecimenpreparationandwithspeedandenvironmentoftesting.Consequently,whereprecisecomparativeresultsaredesired,thesefactorsmustbecarefullycontrolled.4.2.1Itisrealizedthatamaterialcannotbetestedwithoutalsotestingthemethodofpreparationofthatmaterial.Hence,whencomparativetestsofmaterialspersearedesired,thegreatestcaremustbeexercisedtoensurethatallspecimensarepreparedinexactlythesameway,unlessthetestistoincludetheeffectsofspecimenpreparation.Whilecaremustbetakentosecurethemaximumdegreeofuniformityindetailsofpreparation,treatment,andhandling,theexactdimensionsofthetestspecimensareenteredintotheDataAcquisitionSystem(DAS)beforeinitiatingthetest.1.1Thisisatensileimpacttestmethodthatdevelopsenoughtensileimpactenergyatspecificratesofstraintorupturestandardtensileimpactspecimensofbuttfusedplasticpipe.ItisusedtodeterminethequalityofPEbuttfusionjointsmadeinthefieldorinqualificationtesting.ItcanalsobeusedtodeterminetheoptimumbuttfusionjoiningparametersofPEmaterials.1.2Thistestmethodisapplicablefortestingpipespecimenswithadiameter2.37in.(60.3mm)andlargerwithawallthicknessfrom0.25in.(6.3mm)andlarger.Note18212;ThistestmethodissimilartoISO13953.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thistestmethodmaybeusedaloneortogetherwithothertestmethods,toevaluatethequalityofthebuttfusedjoints.Whenthistest,conductedatlaboratorytemperaturesper9.2,iscombinedwiththeelevatedtemperature,sustainedpressuretestinSpecificationD3035,boththeshorttermandlongtermstrengthofthePEbuttfusionjointwillbeverified.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G33
【国际标准分类号】:23_040_45
【页数】:9P.;A4
【正文语种】: