ASTM E855-1990(2000) 涉及静负载的弹簧用金属板材弯曲试验的方法
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【英文标准名称】:StandardTestMethodsforBendTestingofMetallicFlatMaterialsforSpringApplicationsInvolvingStaticLoading
【原文标准名称】:涉及静负载的弹簧用金属板材弯曲试验的方法
【标准号】:ASTME855-1990(2000)
【标准状态】:现行
【国别】:
【发布日期】:1990
【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】:E28.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:弹簧;机械试验;弯曲试验;金属;试验;材料
【英文主题词】:bendtesting-metallicmaterials;cantileverbeamtest;four-pointloadedbeammethod;loadingtests-metals/alloys;massmomentofinertia;mechanicaltesting;metalsandmetallicmaterials;modulusofelasticity;oscillatingpendulummethod;pendulumtest;springs;steelsprings;tension(tensile)properties/tests-metallicmaterials;third-pointloading;bendtestingofmetallicflatmaterials(forspringapplications)
【摘要】:Measurementsofbendingstrengthandmodulusofelasticityinbendingshouldbemadeformaterialswhoseprincipalstressingmodeisbending.Formanymaterials,thetensileandcompressivemoduliaresomewhatdifferent.Sincethebendingmodulusisacombinationofthetensileandcompressivemoduli,itisoftendifferentfromeachofthem.Precisemeasurementsofthemodulusofelasticityinbendingandbendingstrengthrequiredueregardfornumerousvariablesthatmayaffecttheirdetermination.Theseinclude(1)characteristicssuchasspecimenorientationwithrespecttotherollingdirection,grainsize,residualstresses,previousstrainhistory,dimensionsandspecimenpreparation,orientationofdeformedgrainsrelativetothedirectionofthenormalstress;and(2)testconditions,suchastem-perature,temperaturevariations,conditionofthetestequipmentandadherencetotherecommendedtestprocedure.1.1Thisstandarddescribesthreetestmethodsfordeterminingthemodulusofelasticityinbendingandthebendingstrengthofmetallicstripsorsheetsintendedfortheuseinflatsprings:1.1.1TestMethodA--acantileverbeam,1.1.2TestMethodB--athree-pointloadedbeam(thatis,abeamrestingontwosupportsandcentrallyloaded),and1.1.3TestMethodCafour-pointloadedbeam(thatis,abeamrestingontwosupportsandloadedattwopointsequallyspacedfromeachsupport).1.2Valuesstatedininch-poundunitsaretoberegardedasthestandard.SIunitsareprovidedforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H23
【国际标准分类号】:21_160
【页数】:8P.;A4
【正文语种】:
【原文标准名称】:涉及静负载的弹簧用金属板材弯曲试验的方法
【标准号】:ASTME855-1990(2000)
【标准状态】:现行
【国别】:
【发布日期】:1990
【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】:E28.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:弹簧;机械试验;弯曲试验;金属;试验;材料
【英文主题词】:bendtesting-metallicmaterials;cantileverbeamtest;four-pointloadedbeammethod;loadingtests-metals/alloys;massmomentofinertia;mechanicaltesting;metalsandmetallicmaterials;modulusofelasticity;oscillatingpendulummethod;pendulumtest;springs;steelsprings;tension(tensile)properties/tests-metallicmaterials;third-pointloading;bendtestingofmetallicflatmaterials(forspringapplications)
【摘要】:Measurementsofbendingstrengthandmodulusofelasticityinbendingshouldbemadeformaterialswhoseprincipalstressingmodeisbending.Formanymaterials,thetensileandcompressivemoduliaresomewhatdifferent.Sincethebendingmodulusisacombinationofthetensileandcompressivemoduli,itisoftendifferentfromeachofthem.Precisemeasurementsofthemodulusofelasticityinbendingandbendingstrengthrequiredueregardfornumerousvariablesthatmayaffecttheirdetermination.Theseinclude(1)characteristicssuchasspecimenorientationwithrespecttotherollingdirection,grainsize,residualstresses,previousstrainhistory,dimensionsandspecimenpreparation,orientationofdeformedgrainsrelativetothedirectionofthenormalstress;and(2)testconditions,suchastem-perature,temperaturevariations,conditionofthetestequipmentandadherencetotherecommendedtestprocedure.1.1Thisstandarddescribesthreetestmethodsfordeterminingthemodulusofelasticityinbendingandthebendingstrengthofmetallicstripsorsheetsintendedfortheuseinflatsprings:1.1.1TestMethodA--acantileverbeam,1.1.2TestMethodB--athree-pointloadedbeam(thatis,abeamrestingontwosupportsandcentrallyloaded),and1.1.3TestMethodCafour-pointloadedbeam(thatis,abeamrestingontwosupportsandloadedattwopointsequallyspacedfromeachsupport).1.2Valuesstatedininch-poundunitsaretoberegardedasthestandard.SIunitsareprovidedforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H23
【国际标准分类号】:21_160
【页数】:8P.;A4
【正文语种】:
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