ASTM C1332-2001(2007) 用脉冲反射接触技术测量高级陶瓷超声衰减系数的标准试验方法

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【英文标准名称】:StandardTestMethodforMeasurementofUltrasonicAttenuationCoefficientsofAdvancedCeramicsbyPulse-EchoContactTechnique
【原文标准名称】:用脉冲反射接触技术测量高级陶瓷超声衰减系数的标准试验方法
【标准号】:ASTMC1332-2001(2007)
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:C28.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:attenuationcoefficient;attenuationspectrum;materialmicrostructure;materialscharacterization;monolithicceramics;nondestructiveevaluation;polycrystallinemetals;pulse-echotechnique;structuralcomposites;ultrasonicattenuation;ultras
【摘要】:1.1Thistestmethoddescribesaprocedureformeasurementofultrasonicattenuationcoefficientsforadvancedstructuralceramicmaterials.Theprocedureisbasedonabroadbandbufferedpiezoelectricprobeusedinthepulse-echocontactmodeandemittingeitherlongitudinalorshearwaves.Theprimaryobjectiveofthistestmethodismaterialscharacterization.1.2Theprocedurerequirescouplinganultrasonicprobetothesurfaceofaplate-likesampleandtherecoveryofsuccessivefrontsurfaceandbacksurfaceechoes.Powerspectraoftheechoesareusedtocalculatetheattenuationspectrum(attenuationcoefficientasafunctionofultrasonicfrequency)forthesamplematerial.Thetransducerbandwidthandspectralresponseareselectedtocoverarangeoffrequenciesandcorrespondingwavelengthsthatinteractwithmicrostructuralfeaturesofinterestinsolidtestsamples.1.3Thepurposeofthistestmethodistoestablishfundamentalproceduresformeasurementofultrasonicattenuationcoefficients.Thesemeasurementsshoulddistinguishandquantifymicrostructuraldifferencesamongsolidsamplesandthereforehelpestablishareferencedatabaseforcomparingmaterialsandcalibratingultrasonicattenuationmeasurementequipment.1.4Thistestmethodappliestomonolithicceramicsandalsopolycrystallinemetals.Thistestmethodmaybeappliedtowhiskerreinforcedceramics,particulatetoughenedceramics,andceramiccompositesprovidedthatsimilarconstraintsonsamplesize,shape,andfinisharemetasdescribedhereinformonolithicceramics.1.5Thistestmethodsetsforththeconstraintsonsamplesize,shape,andfinishthatwillassurevalidattenuationcoefficientmeasurements.Thistestmethodalsodescribestheinstrumentation,methods,anddataprocessingproceduresforaccomplishingthemeasurements.1.6Thistestmethodisnotrecommendedforhighlyattenuatingmaterialssuchasverythick,veryporous,rough-surfacedmonolithicsorcomposites.Thistestmethodisnotrecommendedforhighlynonuniform,heterogeneous,cracked,defective,orotherwiseflaw-riddensamplesthatareunrepresentativeofthenatureorinherentcharacteristicsofthematerialunderexamination.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q32
【国际标准分类号】:19_100;81_060_99
【页数】:11P.;A4
【正文语种】: