PEC材料工程英语证书考试-材料试验词汇VIP专享VIP免费

第1页共23页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第1页共23页PEC材料工程英语证书考试-材料试验词汇AAdherence—Theextenttowhichacoatingbondstoasubstrate.AdherenceIndex--MeasureoftheAdherenceofporcelainenamelandceramiccoatingstosheetmetal.AlphaRockwellHardness—IndexoftheresistanceofaplastictosurfacepenetrationbyaspecifiedindenterunderspecifiedloadappliedwithaRockwellHardnesstester.HighervaluesindicatehigherindentationHardness.AxialStrain—TheStraininthedirectionthattheloadisapplied,oronthesameaxisastheappliedload.Analogueboard—Amachinecircuitboard,whichconvertsanaloguesignalsintodigitalsignal.AnchorPin—AsteelpinthatconnectsagriporjigtoaneyeendAutoReturn—AutoReturn,whensettoon,causesthecrossheadtoreturnautomaticallytoitsZeropointattheendofthetest.BBendTest—MethodformeasuringDuctilityofcertainmaterials.Therearenostandardizedtermsforreportingbendtestresultsforbroadclassesofmaterials;rather,termsassociatedwithbendtestsapplytospecificformsortypesofmaterials.Forexample,materialsspecificationssometimesrequirethataspecimenbebenttoaspecifiedinsidediameter(ASTMA-360,steelproducts).AbendtestforDuctilityofweldsisgiveninASTME-190.Resultsoftestsoffiberboardarereportedbyadescriptionofthefailureorphotographs.BendingStrength—AlternatetermforFlexuralStrength.Itismostcommonlyusedtodescribeflexurepropertiesofcastironandwoodproducts.第2页共23页第1页共23页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第2页共23页BondStrength—Stress(tensileloaddividedbyareaofbond)requiredtoruptureabondformedbyanadhesivebetweentwometalblocks.BreakElongation—TheElongationofthespecimentothebreakpoint.BreakingLoad—Loadwhichcausesfractureinatensile,compression,flexureorTorsionTest.Intensiletestsoftextilesandyarns,breakingloadalsoiscalledbreakingstrength.Intensiletestsofthinsheetmaterialsormaterialsinformofsmalldiameterwireitisdifficulttodistinguishbetweenbreakingloadandthemaximumloaddeveloped,sothelatterisconsideredthebreakingload.BreakingStrength—Stressrequiredrupturingthespecimen.GLOSSARYOFMATERIALSTESTINGBulkModulusofElasticity—RatioofStresstochangeinvolumeofamaterialsubjectedtoaxialloading.RelatedtoModulusofElasticity(E)andPoisson'sRatio(r)bythefollowingequation:BulkModulusK=E/3(1-2r).CleavageStrength—Tensileloadrequiredtocauseseparationofa1-in.longmetal-to-metaladhesivebondundertheconditionssetinASTMD-1062.ClimbingDrumPeelTest—MethodfordeterminingPeelResistanceofadhesivebondbetweenarelativelyflexibleandarigidmaterial.(ASTMD-1781).CoefficientofElasticity—AnalternatetermforModulusofElasticity.CohesiveStrength—TheoreticalStressthatcausesfractureintensiletestifmaterialexhibitsnoplasticdeformation.ComplexModulus—Measureofdynamicmechanicalpropertiesofamaterial,takingintoaccountenergydissipatedasheatduringdeformationandRecovery.Itisequaltothesumofstaticmodulusofamaterialanditslossmodulus.Inthecaseofshearloading,itiscalleddynamicmodulus.Compressibility—ExtenttowhichamaterialiscompressedintestforcompressibilityandRecoveryofgasketmaterials.ItisusuallyreportedwithRecovery.第3页共23页第2页共23页编号：时间：2021年x月x日书山有路勤为径，学海无涯苦作舟页码：第3页共23页CompressibilityandRecoveryTest—Methodformeasuringbehaviorofgasketmaterialsundershorttimecompressiveloadingatroomtemperature.ASTMF-36outlinesastandardprocedure.Thistestisnotdesignedtoindicatelongterm(creep)behavio...