ASTM D3884-2009 纺织品耐磨性的标准指南(旋转平台、双头法)

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【英文标准名称】:StandardGuideforAbrasionResistanceofTextileFabrics(RotaryPlatform,Double-HeadMethod)
【原文标准名称】:纺织品耐磨性的标准指南(旋转平台、双头法)
【标准号】:ASTMD3884-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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;rotaryplatform;textilefabric;Abrasionresistance--textilefabrics/fibers;Double-headabrader;Rotaryplatformabrader;Textilefabrics(general)
【摘要】:Themeasurementoftheresistancetoabrasionoftextileandothermaterialsisverycomplex.Theresistancetoabrasionisaffectedbymanyfactors,suchastheinherentmechanicalpropertiesofthefibers;thedimensionsofthefibers;thestructureoftheyarns;theconstructionofthefabrics;andthetype,kind,andamountoffinishingmaterialaddedtothefibers,yarns,orfabric.Theresistancetoabrasionisalsogreatlyaffectedbytheconditionsofthetests,suchasthenatureofabradant,variableactionoftheabradantovertheareaofspecimenabraded,thetensionofthespecimen,thepressurebetweenthespecimenandabradant,andthedimensionalchangesinthespecimens.Abrasiontestsareallsubjecttovariationduetochangesintheabradantduringspecifictests.Theabradantmustaccordinglybediscardedatfrequentintervalsorcheckedperiodicallyagainstastandard.Withdisposableabradants,theabradantisusedonlyonceordiscardedafterlimiteduse.Withpermanentabradantsthatusehardenedmetalorequivalentsurfaces,itisassumedthattheabradantwillnotchangeappreciablyinaspecificseriesoftests.Similarabradantsusedindifferentlaboratorieswillnotchangeatthesamerate,duetodifferencesinusage.Permanentabradantsmayalsochangeduetopickupoffinishingorothermaterialfromtestfabricsandmustaccordinglybecleanedatfrequentintervals.Themeasurementoftherelativeamountofabrasionmayalsobeaffectedbythemethodofevaluationandmaybeinfluencedbythejudgmentoftheoperator.Theresistanceoftextilematerialstoabrasionasmeasuredonatestingmachineinthelaboratoryisgenerallyonlyoneofseveralfactorscontributingtowearperformanceordurabilityasexperiencedintheactualuseofthematerial.Whilex201C;abrasionresistancex201D;(oftenstatedintermsofthenumberofcyclesonaspecifiedmachine,usingaspecifiedtechniquetoproduceaspecifieddegreeoramountofabrasion)andx201C;durabilityx201D;(definedastheabilitytowithstanddeteriorationorwearingoutinuse,includingtheeffectsofabrasion)arefrequentlyrelated,therelationshipvarieswithdifferentenduses,anddifferentfactorsmaybenecessaryinanycalculationofpredicteddurabilityfromspecificabrasiondata.Laboratorytestsmaybereliableasanindicationofrelativeend-useperformanceincaseswherethedifferenceinabrasionresistanceofvariousmaterialsislarge,buttheyshouldnotberelieduponwheredifferencesinlaboratorytestfindingsaresmall.Ingeneral,theyshouldnotberelieduponforpredictionofactualwear-lifeinspecificendusesunlesstherearedatashowingthespecificrelationshipbetweenlaboratoryabrasiontestsandactualwearintheintendedend-use.Thesegeneralobservationsapplytoalltypesoffabrics,includingwoven,nonwoven,andknitapparelfabrics,householdfabrics,industrialfabrics,andfloorcoverings.Itisnotsurprising,therefore,tofindthattherearemanydifferenttypesofabrasiontestingmachines,abradants,testingconditions,testingprocedures,methodsofevaluationofabrasionresistanceandinterpretationofresults.Allthetestproceduresandinstrumentsthathavebeendevelopedforabrasionresistanceoffabricsmayshowahighdegreeofvariabilityinresultsobtainedbydifferentoperatorsandindifferentlaboratories,however,theyrepresenttheproceduresmostwidelyusedintheindustry.Becausethereisadefiniteneedformeasuringtherelativeresistancetoabrasion,thisisoneoftheseveralproceduresthatisusefultohelpminimizetheinherentvariationinresultsthatmayoccur.Beforedefinitepredictionsoffabricusefulnesscanbedrawnfromanabrasiontestasmade..........
【中国标准分类号】:W55
【国际标准分类号】:59_080_30
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDensity,Absorption,andVoidsinHardenedConcrete
【原文标准名称】:硬化混凝土的比重、吸收性及空隙度的标准试验方法
【标准号】:ASTMC642-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:C09.69
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:吸收;空腔;混凝土;建筑;施工材料;试验
【英文主题词】:absorption;concrete-hardened;density;voids
【摘要】:Thistestmethodisusefulindevelopingthedatarequiredforconversionsbetweenmassandvolumeforconcrete.Itcanbeusedtodetermineconformancewithspecificationsforconcreteandtoshowdifferencesfromplacetoplacewithinamassofconcrete.1.1Thistestmethodcoversthedeterminationsofspecificgravity,percentabsorption,andpercentvoidsinhardenedconcrete.1.2Thetextofthismethodreferencesnotesandfootnoteswhichprovideexplanatoryinformation.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthisstandard.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Technicaldrawings--Projectionmethod--Part4:Centralprojection
【原文标准名称】:技术制图.投影方法.第4部分:中心投影图
【标准号】:JISZ8315-4-1999
【标准状态】:现行
【国别】:日本
【发布日期】:1999-03-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonBasicEngineering
【标准类型】:()
【标准水平】:()
【中文主题词】:工程图;投影法(制图)
【英文主题词】:engineeringdrawings;projection(drawing)
【摘要】:この規格は,ASZ831-5-1に規定された一般規則に従って,すペての技術分野であらゆる種類の製図に対して透視投影を行う場合の基本的な規則を規定する。
【中国标准分类号】:J04
【国际标准分类号】:01_100_01
【页数】:30P;A4
【正文语种】:日语