ASTM D4483-2005a 在橡胶和碳黑生产工业中试验方法标准的精确度评价的标准规程

作者:标准资料网 时间:2024-05-20 22:44:46  浏览:9689   来源:标准资料网

【英文标准名称】:StandardPracticeforEvaluatingPrecisionforTestMethodStandardsintheRubberandCarbonBlackManufacturingIndustries
【原文标准名称】:在橡胶和碳黑生产工业中试验方法标准的精确度评价的标准规程
【标准号】:ASTMD4483-2005a
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D11.16
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:测定;橡胶;工艺;标准;硫化橡胶;精密度;试验
【英文主题词】:generalprecision;interlaboratorytestprogram;ITP;precision;repeatability;reproducibility;specialprecision
【摘要】:Testsareconductedusingstandardtestmethodstogeneratetestdatathatareusedtomakedecisionsforcommercial,technical,andscientificpurposes.Itfollowsthattheprecisionofaparticulartestmethodisanimportantqualitycharacteristicorfigureofmeritforatestmethodandadecisionprocess.Anevaluationoftheprecisionofatestmethodisnormallyconductedwith(1)someselectedgroupofmaterialsastypicallyusedwiththatmethodand(2)withagroupofvolunteerlaboratoriesthathaveexperiencewiththetestmethod.Theevaluationrepresentsaneventintimeforthetestmethodforthesematerialsandlaboratories.AnotherITPprecisionevaluationwithsomewhatdifferentmaterialsorevenwiththesamematerialswiththesamelaboratoriesatadifferenttime,maygenerateprecisionresultsthatdifferfromtheinitialITP.ExperienceasindicatedinRefs(1-4)4andelsewherehasshownthatthepoorreproducibilityamongthelaboratoriesofatypicalITPisalmostalwaysduetointerlaboratorybias.Certainlaboratoriesarealwaysloworhighcomparedtoareferenceaswellasotherlaboratoriesinalltests.ThisusualoutcomeformanyITPsisaddressedinthispracticebytheuseofthethree-steprobustanalysisproceduresasdescribedinSection7.Cautionisurgedinapplyingprecisionresultsofaparticulartestmethodtoproducttestingforconsumer-producerproductacceptance.Productacceptanceproceduresshouldbedevelopedonthebasisofprecisiondataobtainedinspecialprogramsthatarespecifictothecommercialproductsandtothelaboratoriesoftheinterestedpartiesforthistypeoftesting.1.1Thispracticecoversguidelinesforevaluatingprecisionandservesasthegoverningpracticeforinterlaboratorytestprograms(ITP)usedtoevaluateprecisionfortestmethodsasusedintherubbermanufacturingandthecarbonblackindustries.ThispracticeusesthebasiconewayanalysisofvariancecalculationalgorithmsofPracticeE691.Althoughbiasisnotevaluatedinthispractice,itisanessentialconceptinunderstandingprecisionevaluation.1.2Thispracticeappliestotestmethodsthathavetestresultsexpressedintermsofaquantitativecontinuousvariable.Althoughexceptionsmayoccur,itisingenerallimitedtotestmethodsthatarefullydevelopedandinroutineuseinanumberoflaboratories.1.3Twoprecisionevaluationmethodsaregiventhataredescribedasrobuststatisticalproceduresthatattempttoeliminateorsubstantiallydecreasetheinfluenceofoutliers.ThefirstisaGeneralPrecisionprocedureintendedforalltestmethodsintherubbermanufacturingindustry,andthesecondisaspecificvariationofthegeneralprecisionproceduredesignatedasSpecialPrecision,thatappliestocarbonblacktesting.BothoftheseproceduresusethesameuniformlevelexperimentaldesignandtheMandelhandkstatisticstoreviewtheprecisiondatabaseforpotentialoutliers.However,theyuseslightmodificationsintheprocedureforrejectingincompatibledatavaluesasoutliers.TheSpecialPrecisionprocedureisspecificastothenumberofreplicatesperdatabasecellormaterial-laboratorycombination.1.4Thispracticeisdividedintothefollowingsections:1.5Sixannexesarepresented;theseserveassupplementstothemainbodyofthispractice.aregivenmainlyasbackgroundinformationthatisimportantforafullunderstandingofprecisionevaluation.containdetailedinstructionsandproceduresneededtoperformtheoperationsascalledforinvariouspartsofthepractice.Theuseoftheseannex......
【中国标准分类号】:G49;G34
【国际标准分类号】:83_060
【页数】:60P.;A4
【正文语种】: