作者:标准资料网 时间:2024-04-28 08:39:28   浏览:9712   来源:标准资料网

【英文标准名称】:StandardGuideforMeasuringHairinessofYarnsbythePhoto-ElectricApparatus
【原文标准名称】:用光电仪测量纱线多毛性的标准指南
【标准号】:ASTMD5647-2007
【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】:D13.58
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:纤维;长丝纱线;指南;测量技术;物理性能;细纱;纺织纤维;纱线
【英文主题词】:fiber;fuzz;hairiness;yarn
【摘要】:Thephoto-electricmethodformeasuringthehairinessofyarnsisnotrecommendedforacceptancetestingofcommercialshipmentssinceexperiencehasshownthatresultsobtainedfrommachinesproducedbyonemanufacturercannotusuallybeverifiedbymachinesproducedbyanothermanufacturer.Thisguideisintendedtoincreasetheawarenessoftheusertoavailabletechniquesformeasuringhairiness.Insomecasesthepurchaserandthesuppliermayhavetotestacommercialshipmentofoneormorespecificmaterialsbythebestavailableguidethoughithasnotbeenrecommendedforacceptancetestingofcommercialshipments.5.1.1Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,testsamplesthatareashomogenousaspossible,drawnfromthematerialfromwhichthedisparatetestresultswereobtained,andrandomlyassignedinequalnumberstoeachlaboratoryfortesting.Thetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrectedorfuturetestresultsforthatmaterialmustbeadjustedinconsiderationoftheknownbias.Theremaybeadistinctdifferenceintestingspeedandtensiondevicesofmachinessuppliedbydifferentmanufacturersthatmaygivedifferencesinreportedtestresults.Themeasurementofhairinessisimportanttoyarnproducers.Thisguideisusefulforprocesscontrolandresearchoftheyarnsurfacedesignatanindividualmanufacturingfacility.Hairinessalsoisusedtoprovideyarnprocessingmachinedesign,andindicationsofmalfunctioningprocessequipment,suchasrotors,doffingmechanisms,guides,andtravelers.Itcanbeusedtoidentifysomecausesofbarrenessandshadevariationinfabrics.1.1Thisguidecoversthedeterminationofthehairinessofmostfilamentandspunyarnusingaphoto-electricsensorapparatus.Itisnotintendedforuseonnoveltyyarns.1.2ThisguideshowsthevaluesinSIunits."SIunits"isthetechnicallycorrectnameforasystemofmetricunitsknownastheInternationalSystemofUnits.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:W04
【国际标准分类号】:59_080_20
【页数】:3P.;A4
【正文语种】: