ASTM D1424-2009 埃尔曼多夫落锤仪测定机织物抗撕裂的标准试验方法

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【英文标准名称】:StandardTestMethodforTearingStrengthofFabricsbyFalling-PendulumType(Elmendorf)Apparatus
【原文标准名称】:埃尔曼多夫落锤仪测定机织物抗撕裂的标准试验方法
【标准号】:ASTMD1424-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D13.60
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Elmendorf;fabric;strength;tear;Airbagmaterials/applications;Blankets;Elmendorfapparatus;Fallingpendulumtest;Teartesting;Woventextilefabrics
【摘要】:Thistestmethodforthedeterminationoftearingstrengthbythefallingpendulumtypeapparatusisusedinthetradefortheacceptancetestingofcommercialshipmentsoffabrics,butcautionisadvisedsincetechniciansmayfailtogetgoodagreementbetweenresultsoncertainfabrics.Comparativetestsasdirectedin5.1.1maybeneeded.Incaseofadisputearisingfromdifferencesinreportedtestresultswhenusingthistestmethodforacceptancetestingofcommercialshipments,thepurchaserandthesuppliershouldconductcomparativeteststodetermineifthereisastatisticalbiasbetweentheirlaboratories.Statisticalassistanceisrecommendedfortheinvestigationofbias.Asaminimum,thetwopartiesshouldtakeagroupoftestspecimensthatareashomogeneousaspossibleandthatarefromalotoffabricofthetypeinquestion.Thetestspecimensshouldthenberandomlyassignedinequalnumberstoeachlaboratoryfortesting.Theaverageresultsfromthetwolaboratoriesshouldbecomparedusingappropriatestatisticalanalysisandanacceptableprobabilitylevelchosenbythetwopartiesbeforethetestingbegan.Ifabiasisfound,eitheritscausemustbefoundandcorrectedorthepurchaserandthesuppliermustagreetointerpretfuturetestresultswithconsiderationtotheknownbias.Microprocessorsystemsforautomaticcollectionofdatacanprovideeconomicalandreliableresultswhenproperlycalibrated.SeeTestMethodsD2261andD5587.1.1Thistestmethodcoversthedeterminationoftheforcerequiredtopropagateasingle-riptearstartingfromacutinafabricandusingafalling-pendulum(Elmendorf-Type)apparatus.1.2Thistestmethodappliestomostfabricsincludingwoven,layeredblankets,nappedpile,blanket,andairbagfabrics,providedthefabricdoesnottearinthedirectioncrosswisetothedirectionoftheforceapplicationduringthetest.Thefabricsmaybeuntreated,heavilysized,coated,resin-treated,orotherwisetreated.Instructionsareprovidedfortestingspecimenswith,orwithout,wetting.1.3Thistestmethodissuitableonlyforthewarpdirectiontestsofwarp-knitfabrics.Itisnotsuitedforthecoursedirectionofwarpknitfabricsoreitherdirectionofmostotherknittedfabrics.1.4ThevaluesstatedineitherSIunitsorU.S.customaryunitsaretoberegardedasstandard,butmustbeusedindependentlyofeachother.TheU.S.customaryunitsmaybeapproximate.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W55
【国际标准分类号】:59_080_30
【页数】:8P.;A4
【正文语种】:英语