【英文标准名称】:StandardTestMethodforResistancetoAirflowasanIndicationofAverageFiberDiameterofWoolTop,CardSliver,andScouredWool
【原文标准名称】:用气流阻力表示羊毛毛条,生条和洗净羊毛的平均纤维直经的标准试验方法
【标准号】:ASTMD1282-2005(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:D13.13
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:air-flow;diameter;wool;Airflowresistance;Diameter--textilefabrics/fibers;Micronairereading;Port-Arreadings;WIRAfiberfinenessinstrument;Woolandwooltop--fiberdiameter
【摘要】:Thistestmethodisnotrecommendedfortheacceptancetestingofcommercialshipmentsofwooltop,cardsliver,orscouredwoolsincetherefereemethod,TestMethodD2130,isrecommendedforthatpurpose.Althoughthistestmethodisnotrecommendedforacceptancetesting,itisusefulforfastqualitycontrolchecks..Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,usethesamplesforsuchacomparativetestthatareashomogenousaspossible,drawnfromthesamelotofmaterialasthesamplesthatresultedindisparateresultsduringinitialtestingandrandomlyassignedinequalnumberstoeachlaboratory.Thetestresultsfromthelaboratoriesinvolvedshouldbecomparedusingastatisticaltestforunpaireddata,aprobabilitylevelchosenpriortothetestingseries.Ifbiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Thespecificareaofthewoolfibersismeasuredbytheresistanceinairflow.Theresistancetoairflowhasbeenrelatedtoaveragefiberdiametermeasuredbythemicroprojectionmethod.Theinstrumentshavebeencalibratedtoreadaveragediameterinmicrometres.Althoughthereadingisaffectedbytheaveragefiberdiameterdistributionofthespecimen,theresultssecuredbytheinstrumentsgivenoindicationofthisdistribution.However,inconvertingthemicrometresreadingtomillitexunits(AnnexA1),low,medium,andhighstandarddeviationswereusedinthecalculationstoarriveattherangeofmillitexunitswhichaccordinglyreflectthedistributionoffiberdiameters.
1)BalanceAdjustmentKnob
8)PorosityCalibrationControl
2)BalancePan
9)CompressionLever
3)AirReservoir
10)CalibratorPlugPlunger
4)MeterZeroAdjustmentScrew
11)PorosityCalibratorPlug
5)PorosityTestChamberLid
12)CalibrationWeight
6)DifferentialPressureGage
13)WeighingBalanceMechanism
7)PorosityZeroControl
14)AtomizerBulb