【英文标准名称】:?StandardPracticeforBearingFatigueResponseofPolymerMatrixCompositeLaminates
【原文标准名称】:聚合物基复合层压板的轴承疲劳响应用标准实施规程
【标准号】:ASTMD6873/D6873M-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008-04
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:?1.1Thispracticeprovidesinstructionsformodifyingstaticbearingtestmethodstodeterminethefatiguebehaviorofcompositematerialssubjectedtocyclicbearingforces.Thecompositematerialformsarelimitedtocontinuous-fiberrein-forcedpolymermatrixcompositesinwhichthelaminateisbothsymmetricandbalancedwithrespecttothetestdirection.Therangeofacceptabletestlaminatesandthicknessesaredescribedin8.2.1.2ThispracticesupplementsTestMethodD5961/D5961Mwithprovisionsfortestingspecimensundercyclicloading.Severalimportanttestspecimenparameters(forexample,fastenerselection,fastenerinstallationmethod,andfatigueforce/stressratio)arenotmandatedbythispractice;however,repeatableresultsrequirethattheseparametersbespecifiedandreported.1.3Thispracticeislimitedtotestspecimenssubjectedtoconstantamplitudeuniaxialloading,wherethemachineiscontrolledsothatthetestspecimenissubjectedtorepetitiveconstantamplitudeforce(stress)cycles.Eitherengineeringstressorappliedforcemaybeusedasaconstantamplitudefatiguevariable.Therepetitiveloadingsmaybetensile,compressive,orreversed,dependinguponthetestspecimenandprocedureutilized.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetexttheinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:
【国际标准分类号】:
【页数】:9P;A4
【正文语种】:英语