ASTM F870-1994(2005) 客车轮胎沟槽部分的胎面印迹和尺寸测量

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【英文标准名称】:StandardPracticeforTreadFootprintsofPassengerCarTiresGrooveAreaFractionandDimensionalMeasurements
【原文标准名称】:客车轮胎沟槽部分的胎面印迹和尺寸测量
【标准号】:ASTMF870-1994(2005)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:F09.30
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:试验;私人汽车;轮胎;凹槽型面;运载工具;花纹(轮胎)
【英文主题词】:footprint;grooveareafraction;tirefootprintimpression
【摘要】:Thetreadofatire,theannularbandthatcontactsthepavement,normallycontainsgeometrictreadpatternelementsthataredefinedbygroovesorvoids.Theseareemployedtoconferappropriatetractionpropertiestothetire,mainlyonwetorsnow-coveredroads.Onecharacteristicfeatureoftiretreadpatternsthatisimportantforbothtractionandtirewearbehavioristhepercentorx201C;fractionalx201D;groovearea.Thegroove-areafractioniscalculatedwithrespecttothetotalorgrosscontactarea.1.1Thispracticecoversatechniqueformeasuringthegrooveorvoidareaofatiretreadpattern.Thevoidareaismeasuredontheinkedimpressionofatiretreadstaticallyloadedagainstheavyweightpaperonaloadplaten.1.2Thisprocedureisintendedtoserveasareferencepracticeformeasuringgrooveortreadpatternvoidareasinatire-footprintimpression.Thistechniqueisusablebyanylaboratorywithoutspecialequipmentalthoughmoresophisticatedproceduresarealsocommonlyemployed,suchasopticalorvideocameraprocesses.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G41
【国际标准分类号】:83_160_10
【页数】:4P.;A4
【正文语种】: