GB/T 521-2012 轮胎外缘尺寸测量方法

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基本信息
标准名称:轮胎外缘尺寸测量方法
英文名称:Test method of measuring peripheral dimensions for tyres
中标分类: 化工 >> 橡胶制品及其辅助材料 >> 轮胎
ICS分类: 橡胶和塑料工业 >> 轮胎 >> 轮胎综合
替代情况:替代GB/T 521-2003
发布部门:中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会
发布日期:2012-07-31
实施日期:2013-02-01
首发日期:
作废日期:
主管部门:中国石油和化学工业联合会
归口单位:全国轮胎轮辋标准化技术委员会
起草单位:全国轮胎轮辋标准化技术委员会(SAC/TC 19)
出版社:中国标准出版社
出版日期:2013-02-01
页数:8
适用范围

本标准规定了轮胎(外胎、内胎和垫带)外缘尺寸的测量工具及其精度要求、测量条件、测量方法、数
据计算与处理以及试验报告。
本标准适用于所有新的轿车轮胎、载重汽车轮胎、农业轮胎、工程机械轮胎、工业车辆充气轮胎和摩
托车轮胎。

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引用标准

下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件,仅注日期的版本适用于本文
件。凡是不注日期的引用文件,其最新版本(包括所有的修改单)适用于本文件。GB/T6326 轮胎术语及其定义

所属分类: 化工 橡胶制品及其辅助材料 轮胎 橡胶和塑料工业 轮胎 轮胎综合
下载地址: 点击此处下载
【英文标准名称】:StandardGuideforStatisticalEvaluationofAtmosphericDispersionModelPerformance
【原文标准名称】:大气散射模型性能的统计评价的标准指南
【标准号】:ASTMD6589-2005(2010)e1
【标准状态】:现行
【国别】:美国
【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】:D22.11
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:airquality;model;modelperformance;qualitativeevaluation;quantitativeevaluation;statistical;Statisticalmethods--atmosphericanalysis;Airqualityanalysis;Dispersionmodeling;Models/modeling--atmosphericanalysis;Performance--airanalysi
【摘要】:Guidanceisprovidedondesigningmodelevaluationperformanceproceduresandonthedifficultiesthatariseinstatisticalevaluationofmodelperformancecausedbythestochasticnatureofdispersionintheatmosphere.Itisrecognizedthereareexamplesintheliteraturewhere,knowinglyorunknowingly,modelswereevaluatedontheirabilitytodescribesomethingwhichtheywereneverintendedtocharacterize.Thisguideisattemptingtoheightenawareness,andthereby,toreducethenumberofx201C;unknowingx201D;comparisons.Agoalofthisguideistostimulatedevelopmentandtestingofevaluationproceduresthataccommodatetheeffectsofnaturalvariability.Atechniqueisillustratedtoprovideinformationfromwhichsubsequentevaluationandstandardizationcanbederived.1.1Thisguideprovidestechniquesthatareusefulforthecomparisonofmodeledairconcentrationswithobservedfielddata.Suchcomparisonsprovideameansforassessingamodel''sperformance,forexample,biasandprecisionoruncertainty,relativetoothercandidatemodels.Methodologiesforsuchcomparisonsareyetevolving;hence,modificationswilloccurinthestatisticaltestsandproceduresanddataanalysisasworkprogressesinthisarea.Untiltheinterestedpartiesagreeuponstandardtestingprotocols,differencesinapproachwilloccur.Thisguidedescribesaframework,orphilosophicalcontext,withinwhichonedetermineswhetheramodel''sperformanceissignificantlydifferentfromothercandidatemodels.Itissuggestedthatthefirststepshouldbetodeterminewhichmodel''sestimatesareclosestonaveragetotheobservations,andthesecondstepwouldthentestwhetherthedifferencesseenintheperformanceoftheothermodelsaresignificantlydifferentfromthemodelchoseninthefirststep.AnexampleprocedureisprovidedinAppendixX1toillustrateanexistingapproachforaparticularevaluationgoal.Thisexampleisnotintendedtoinhibitalternativeapproachesortechniquesthatwillproduceequivalentorsuperiorresults.AsdiscussedinSection6,statisticalevaluationofmodelperformanceisviewedaspartofalargerprocessthatcollectivelyisreferredtoasmodelevaluation.1.2Thisguidehasbeendesignedwithflexibilitytoallowexpansiontoaddressvariouscharacterizationsofatmosphericdispersion,whichmightinvolvedoseorconcentrationfluctuations,toallowdevelopmentofapplication-specificevaluationschemes,andtoallowuseofvariousstatisticalcomparisonmetrics.Noassumptionsaremaderegardingthemannerinwhichthemodelscharacterizethedispersion.1.3Thefocusofthisguideisonendresults,thatis,theaccuracyofmodelpredictionsandthediscernmentofwhetherdifferencesseenbetweenmodelsaresignificant,ratherthanoperationaldetailssuchastheeaseofmodelimplementationorthetimerequiredformodelcalculationstobeperformed.1.4Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisguidecannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.Thisguideisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshoulditbeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Thewordx201C;Standardx201D;inthetitleofthisguidemeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,asso......
【中国标准分类号】:A47
【国际标准分类号】:13_040_20
【页数】:17P.;A4
【正文语种】:英语