Product Code:SAE AMS2632
Title:Inspection, Ultrasonic, of Thin Materials 0.50 inch (12.7 mm) and Under in Cross-Sectional Thickness
Issuing Committee:Ams K Non Destructive Methods And Processes Committee
Scope: This specification covers the procedure for ultrasonic inspection of flat, contoured, and cylindrical products having a cross sectional-thickness of 0.02 to 0.5 inches (0.5 to 12.7 mm). This specification does not apply to inspection of composite materials.
Rationale: This specification covers the procedure for ultrasonic inspection of flat, contoured, and cylindrical products having a cross sectional-thickness of 0.02 to 0.5 inches (0.5 to 12.7 mm). This specification does not apply to inspection of composite materials.【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