基本信息
| 标准名称： | 工具用铣刀 六齿立铣刀用槽铣刀 D=56？80mm |
| 中标分类： |
机械 >>
工艺装备 >>
刀具 |
| 替代情况： | 替代HB 2429-1979 HB 2430-1979 HB 2431-1979 HB 2432-1979 HB 2438-1979 HB 2439-1979 HB 2440-1979 HB 2441-1979 HB 2442-1979 HB 2443-1979 HB 2444-1979 HB 2445-1979 HB 2446-1979 HB 2447-1979 HB 2448-1979 |
| 发布日期： | 1992-10-04 |
| 实施日期： | 1992-12-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
适用范围
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前言
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引用标准
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所属分类： 机械 工艺装备 刀具
【英文标准名称】:StandardTestMethodforSnaggingResistanceofFabrics(Mace)
【原文标准名称】:织物防钩丝性的标准试验方法(钉锤法)
【标准号】:ASTMD3939/D3939M-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D13.59
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:knittedfabric;snaggingresistance;wovenfabric;Macetestmethod;Man-madetextilefibers;Nonwoventextilefabrics;Snaggingresistance;Textilefabrics(general);Yarnproperties
【摘要】:Thistestmethodisnotconsideredsatisfactoryforacceptancetestingofcommercialshipmentsoffabricsbecausethebetween-laboratoryprecisionofthetestmethodispoor(see15.1).Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestshouldbeperformedtodetermineifthereisastatisticalsignificantdifferencebetweenthem,usingcompetentstatisticalassistance.Asaminimum,usethesamplesforsuchacomparativetestthatareashomogeneousaspossible,drawnfromthesamelotofmaterialasthesamplesthatresultedindisparateresultsduringinitialtestingandrandomlyassignedinequalnumberstoeachlaboratory.Thetestresultsfromthelaboratoriesinvolvedshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifbiasisfound,eitheritscausemustbefoundandcorrectedorfuturetestingforthatmaterialmustbeadjustedinconsiderationofthestatisticallysignificantdifferences.Thistestmethodmaybeusedforqualitycontroltestingoffabricsduringmanufacturingandproductcomparisonsofdifferentfabricsbymanufacturers,retailers,andusers.Thistestmethodmayalsobeusedbyresearcherstoexaminetheeffectofnewfibers,yarns,fabricconstructions,andfinishesonthesnaggingresistanceoffabrics.Thistestmethodmaybeusedtotestthesnaggingresistanceofmostapparelandhomefurnishingsfabrics.However,adifferenttestmethodmaybeneededfordifferenttypesoffabricsanddifferentend-uses(suchastowels,pants,andupholstery)(see5.3.1).Somefabricsthatmaynotbesuitableforthistestmethodaredescribedin1.2.ManyopenconstructionfabricscanbetestedforsnaggingresistanceusingAATCCTestMethod65.ThesnaggingresistanceofmanypilefloorcoveringscanbetestedbyTestMethodD1335.TestMethodD5362(BeanBag)mayalsobeconsideredasanalternativefortestingthesnaggingresistanceoffabrics.ThistestmethoddoesnotapplytotheABCSnagTester.Sincefabricsnaggingcanbeaffectedbylaunderingordrycleaning,itmaybeadvisabletotestthesnaggingresistanceofafabricbeforeandafterlaunderingordrycleaning.Thesnaggingresistanceofaspecificfabricvarieswithindividualwearersandgeneralconditionsofuse.Therefore,itcanbeexpectedthatgarmentsofthesamefabricwillshowafairlywidesnaggingresistancespectrumafterwearandmuchgreatervariationinwearthaninreplicatefabricspecimenssubjectedtocontrolledlaboratorytests.Thisfactorshouldbeconsideredwhenadoptinglevelsofacceptabilityforanyspecificationthatincludessnaggingresistance.Snagsobservedinworngarmentsvaryappreciablyinnumberandappearance.Theappearanceofasnagdependsparticularlyon(1)thedegreeofcolorcontrastbetweenthesnagandthesurroundingareaofthefabricor(2)thepresenceoflongdistortionsorlongprotrusions.Theseconditionsarenotevaluatedwhensnaggingisratedsolelyonthenumberofsnags.SeeSection13foradescriptionofcolorcontrast,distortion,andprotrusionasusedinthistestmethod;andseeFigs.1through3inTestMethodD5362forpicturesoffabricdefectsduetosnagging.Becausetheoverallacceptabilityofaspecificfabricisdependentonboththecharacteristicsofthesnagsandotherfactorsaffectingfabricappearance,itisrecommendedthatfabricstestedinthelaboratorybeevaluatedwithregardtothedefectsthatmaybeobservedvisuallyandnotra......
【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