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| 标准名称： | 无线电组合教具(试行) |
| 中标分类： |
轻工、文化与生活用品 >>
文教、体育、娱乐用品 >>
教学专用仪器 |
| 发布日期： | |
| 实施日期： | 1994-06-01 |
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| 出版日期： | |
| 页数： | 7页 |
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所属分类： 轻工 文化与生活用品 文教 体育 娱乐用品 教学专用仪器
【英文标准名称】:StandardTestMethodforPillingResistanceandOtherRelatedSurfaceChangesofTextileFabrics:MartindaleTester
【原文标准名称】:纺织纤维的抗起球性和其他相关表面变化的标准试验方法:马丁代尔支数试验仪
【标准号】:ASTMD4970/D4970M-2010e1
【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】:D13.60
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fabrics;fuzz;pills;Discoloration;Fuzz;Martindaletesters;Pillingresistance;Pressuretesting--textilematerials/applications;Simulatedservicetest;Surfaceanalysis--textilefabrics/fibers;Textilefabrics(general);Textilefibers;Visualexa
【摘要】:AcceptanceTesting8212;Thismethodoftestingfabricsresistancetopillingisnotrecommendedforacceptancetesting.Ifitisusedforacceptancetesting,itshouldbeusedwithcautionbecauseinterlaboratorydataarenotavailable.Insomecasesthepurchaserorsuppliermayhavetotestacommercialshipmentofoneormorespecificmaterialsbythebestavailablemethodeventhoughthemethodhasnotbeenrecommendedforacceptancetesting.Althoughthistestmethodisnotrecommendedforacceptancetesting,itisusefulbecauseitisusedwidelyoutsidetheUnitedStates.Ifthereisadisagreementarisingfromdifferencesinvaluesreportedbythepurchaserandthesupplierwhenusingthistestmethod,thestatisticalbias,ifany,betweenthelaboratoryofthepurchaserandthelaboratoryofthesuppliershouldbedeterminedwithcomparisonbeingbasedontestingspecimensrandomlydrawnfromonesampleofmaterialofthetypebeingevaluated.Competentstatisticalassistanceisrecommendedfortheinvestigationofbias.Aminimumoftwopartiesshouldtakeagroupoftestspecimens,whichareashomogeneousaspossibleandwhicharefromalotofmaterialofthetypeinquestion.Thetestspecimensthenshouldbeassignedrandomlyinequalnumberstoeachlaboratoryfortesting.Theaveragetestresultsfromthetwolaboratoriesshouldbecomparedusinganacceptablestatisticalprotocolandprobabilitylevelchosenbythetwopartiesbeforethetestingisstarted.Appropriatestatisticaldisciplinesforcomparingdatamustbeusedwhenthepurchaserandsuppliercannotagree.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orthepurchaserandthesuppliermustagreetointerpretfutureresultswithconsiderationfortheknownbias.Thepillingoftextilefabricsisaverycomplexpropertybecauseitisaffectedbymanyfactorsthatinclude:typeoffiberorblends,fiberdimensions,yarnandfabricconstruction,andfabricfinishingtreatments.Thepillingresistanceofaspecificfabricinactualwearvariesmorewithgeneralconditionsofuseandindividualwearersthaninreplicatefabricspecimenssubjectedtocontrolledlaboratorytests.Thisexperienceshouldbeborneinmindwhenadoptinglevelsofacceptabilityforaseriesofstandards.Finishesandfabricsurfacechangesmayexertalargeeffectonpilling.Itisrecommendedthatfabricsbetestedafterlaunderingordrycleaning,orboth.Testingbeforerefurbishingalsomaybeadvisable.Prioragreementbetweeninterestedpartiesshoulddeterminethestateofthetest.Pillsvaryappreciablyinsizeandappearanceanddependonthepresenceoflintanddegreeofcolorcontrast.Thesefactorsarenotevaluatedwhenpillingisratedsolelyonthenumberofpills.Thedevelopmentofpillsmaybeaccompaniedbyothersurfacephenomena,suchaslossofcover,colorchange,orthedevelopmentoffuzz.Sincetheoverallacceptabilityofaspecificfabricisdependentonboththecharacteristicsofthepillsandtheotherfactorsaffectingthesurfaceappearance,itissuggestedthatfabricstestedinthelaboratorybeevaluatedsubjectivelywithregardtotheiracceptabilityandnotratedsolelyonthenumberofpillsdeveloped.Aseriesofstandards,basedongraduateddegreesofsurfacechangeofthefabrictypebeingtested,maybesetuptoprovideabasisforsubjectiveratings.Thevisualstandardsaremostadvantageouswhenthelaboratorytestspecimenscorrelatecloselyinappearancewithwornfabricsandshowasimilarratioofpillstofuzz.Countingthepillsandweighingtheirnumberwithrespecttotheirsizeandcontrast,asacombinedmeasureofpillingresistance,isnotrecommendedbecauseoftheexcessivetimerequiredforcounting,sizing,andcalculation.Thedegreeoffabricpilli.......
【中国标准分类号】:W55
【国际标准分类号】:59_080_30
【页数】:4P.;A4
【正文语种】:英语