【英文标准名称】:StandardTestMethodforEffectofSurfaceGrindingonFlexureStrengthofAdvancedCeramics
【原文标准名称】:测试表面研磨对高级陶瓷抗挠强度的影响的标准试验方法
【标准号】:ASTMC1495-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:C28.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:高级工业陶瓷;影响;抗弯强度;表面研磨;试验方法
【英文主题词】:surfacegrinding;machining;advancedceramic;flexurestrength;baselineflexurestrength;damagetolerance
【摘要】:Surfacegrindingcancauseasignificantdecrease3intheflexurestrengthofadvancedceramicsmaterials.Themagnitudeofthelossinstrengthisdeterminedbythegrindingconditionsandtheresponseofthematerial.Thistestmethodcanbeusedtoobtainadetailedcharacterizationoftherelationshipbetweengrindingconditionsandflexurestrengthforanadvancedceramicmaterial.Theeffectonflexurestrengthofvaryingasinglegrindingparameterorseveralgrindingparameterscanbemeasured.Themethodmayalsobeusedtocompareandrankdifferentmaterialsaccordingtotheirresponsetooneormoredifferentgrindingconditions.Resultsobtainedbythismethodcanbeusedtodevelopanoptimumgrindingprocesswithrespecttomaximizingmaterialremovalrateforaspecifiedflexurestrengthrequirement.Thetestmethodcanassistinthedevelopmentofimprovedgrinding-damage-tolerantceramicmaterials.Itmayalsobeusedforqualitycontrolpurposestomonitorandassuretheconsistencyofagrindingprocessinthefabricationofpartsfromadvancedceramicmaterials.Thetestmethodisapplicabletogrindingmethodsthatgenerateaplanarsurfaceandisnotdirectlyapplicabletogrindingmethodsthatproducenon-planarsurfacessuchascylindricalandcenterlessgrinding.1.1Thistestmethodcoversthedeterminationoftheeffectofsurfacegrindingontheflexurestrengthofadvancedceramics.Surfacegrindingofanadvancedceramicmaterialcanintroducemicrocracksandotherchangesinthenearsurfacelayer,generallyreferredtoasdamage(See).Suchdamagecanresultinachange-mostoftenadecrease-inflexurestrengthofthematerial.Thedegreeofchangeinflexurestrengthisdeterminedbyboththegrindingprocessandtheresponsecharacteristicsofthespecificceramicmaterial.Thismethodcomparestheflexurestrengthofanadvancedceramicmaterialafterapplicationofauser-specifiedsurfacegrindingprocesswiththebaselineflexurestrengthofthesamematerial.Thebaselineflexurestrengthisobtainedafterapplicationofasurfacegrindingprocessspecifiedinthisstandard.Thebaselineflexurestrengthisexpectedtoapproximatecloselytheinherentstrengthofthematerial.TheflexurestrengthismeasuredbymeansofASTMstandardflexuretestmethods.1.2FlexuretestmethodsusedtodeterminetheeffectofsurfacegrindingareC1161TestMethodforFlexureStrengthofAdvancedCeramicsatAmbientTemperaturesandC1211TestMethodforFlexureStrengthofAdvancedCeramicsatElevatedTemperatures.1.3MaterialscoveredinthisstandardarethoseadvancedceramicsthatmeetcriteriaspecifiedinflexuretestingstandardsC1161andC1211.1.4Theflexuretestmethodssupportingthisstandard(C1161andC1211)requirespecimensthathavearectangularcrosssection,flatsurfaces,andthatarefabricatedwithspecificdimensionsandtolerances.Onlygrindingprocessesthatarecapableofgeneratingthespecifiedflatsurfaces,i.e.planargrindingmodes,aresuitableforevaluationbythismethod.Amongtheapplicablemachinetypesarehorizontalandverticalspindlereciprocatingsurfacegrinders,horizontalandverticalspindlerotarysurfacegrinders,doublediskgrinders,andtool-and-cuttergrinders.Incrementalcross-feed,plunge,andcreep-feedgrindingmethodsmaybeused.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q32
【国际标准分类号】:81_060_30
【页数】:12P.;A4
【正文语种】: