【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


【英文标准名称】:Graphicalsymbolsfordiagrams-Basicmechanicalcomponents
【原文标准名称】:图示的图形符号.基本机械组件
【标准号】:BSISO14617-7-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2004-08-31
【实施或试行日期】:2004-08-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;离合器;线路图;索引图;机械零部件;管道;电气工程;喷嘴;储藏设备;制动器;图示;图形符号;弹簧;槽;表(数据)
【英文主题词】:Brakes;Circuitdiagrams;Clutches;Definition;Definitions;Diagrams;Electricalengineering;Graphicsymbols;Graphicalsymbols;Keyplans;Mechanicalcomponents;Nozzles;Pipelines;Springs;Storageequipment;Tables(data);Tanks
【摘要】:ThispartofISO14617specifiesgraphicalsymbolsindiagramsfor—mechanicalelementssuchasweights,springs,clutchesandbrakes,—pipeandductelementssuchasrestrictors,nozzlesandairvents,and—devicesforstoragesuchastanks,pressurevesselsandgasbottles.Forthefundamentalrulesofcreationandapplicationofgraphicalsymbolsindiagrams,seeISO81714-1.ForanoverviewofISO14617,informationonthecreationanduseofregistrationnumbersforidentifyinggraphicalsymbolsusedindiagrams,rulesforthepresentationandapplicationofthesesymbols,andexamplesoftheiruseandapplication,seeISO14617-1.
【中国标准分类号】:A22
【国际标准分类号】:01_080_30;21_020
【页数】:20P;A4
【正文语种】:英语