基本信息
| 标准名称： | 先张法预应力混凝土枕钢模型技术条件 |
| 中标分类： |
铁路 >>
铁路建筑设备 >>
线路构件 |
| 发布日期： | |
| 实施日期： | 2002-07-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 6页 |
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所属分类： 铁路 铁路建筑设备 线路构件
【英文标准名称】:StandardGuideforAbrasionResistanceofTextileFabrics(UniformAbrasion)
【原文标准名称】:针织织物耐磨损性的(均匀磨损法)的标准指南
【标准号】:ASTMD4158-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D13.60
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:abrasion;abrasionresistance;carpets;floorcoverings;nonwoven;pile;rugs;textile;textilefabrics;uniform;yarn;Abrasionresistance--textilefabrics/fibers;Nonwoventextilefabrics;Uniformabrasionmethod;Abrasionresistance--textile
【摘要】:Theresistancetoabrasionoftextilematerialsisaffectedbymanyfactorsinacomplexmanner.Theresultsobtainedfromtheuseofthisinstrumentassistinevaluatingthesefactorsrelativetothewearserviceabilityofthefinaltextileproductinspecificenduses.Theresistancetoabrasionisaffectedbymanyfactorsthatincludetheinherentmechanicalpropertiesofthefibers;thedimensionsofthefibers;thestructureoftheyarns;theconstructionofthefabrics;thetype,kind,amountoftreatmentaddedtothefibers,yarnsorfabric;thenatureoftheabradant;thetensiononthespecimen;thepressurebetweenthespecimenandtheabradant;andthedimensionalchangesinthespecimen.Experiencehasshowninmanyinstances,thatrelativeresultsobtainedwiththisinstrumentwhenusedonaseriesoffabrics,agreedwiththoseobtainedbaseduponperformanceinenduse.However,cautionisadvisedbecauseanomalousresultsmayoccurduetouncontrolledfactorsinmanufacturingorotherprocesses.Specificinstanceshavebeendescribed.,,,Inanyevent,anomalousresultsshouldbestudiedtofurtherunderstandthecomplexbehaviorthatmayoccurasaresultofabrasionthatmayinturnassistinthedevelopmentofmoredurablefabrics.Testingsomespecimensunderx201C;wetx201D;conditionscanaddanotherdimensiontotheevaluationofsometextiles.Suchtestingunderx201C;wetx201D;conditionscanhelpascertaintheeffectofchangesinafabric''sresistancetoabrasionwhenitbecomeswet.Thistestcanalsoincreasetheuniformityoftheabradingactionbywashingawayabrasiondebrisandpreventingthebuildupofbrokenfibersthatcaninterferewiththeproperprogressionofthetests.Thistestisusedasaguideinevaluatingtextilesinqualitycontrolandinresearch.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,thetestsamplesshouldbeusedthatareashomogenousaspossible,thataredrawnfromthematerialfromwhichthedisparatetestresultswereobtained,andthatarerandomlyassignedinequalnumberstoeachlaboratoryfortesting.Otherfabricswithestablishedtestvaluesmaybeusedforthispurpose.Thetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheracausemustbefoundandcorrected,orfuturetestresultsmustbeadjustedinconsiderationoftheknownbias.Thistestisuniqueandissignificantlydifferentfromanyotherexistingabradingtest.Thisguidemayalsobeusedasatechniqueforpretreatingmaterialforsubsequenttesting.Forexample,apredeterminednumberofabrasioncyclesatspecifiedtestconditionsmaybeperformedonaseriesofspecimens,whicharethensubjectedtoastrengthorbarrierperformancetest.Theresistanceoftextilematerialstoabrasionasmeasuredbythisguidedoesnotincludeallthefactorswhichaccountforwearperformanceordurabilityinactualuse.Whilethex201C;abrasionresistancex201D;statedintermsofthenumberofcyclesandx201C;durabilityx201D;(definedastheabilitytowithstanddeteriorationorwearingoutinuse,includingtheeffectsofabrasion)arefrequentlyrelated.Therelationshipvarieswithdifferentenduses,anddifferentfactorsmaybenecessaryi......