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】:
【英文标准名称】:Bondedabrasiveproducts-Permissibleunbalancesofgrindingwheelsasdelivered-Statictesting
【原文标准名称】:粘合磨料产品.砂轮交货时的可允许不平衡性.静态试验
【标准号】:ISO6103-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-04
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC29
【标准类型】:()
【标准水平】:()
【中文主题词】:交货条件;平衡;直径;磨料;测量;测量技术;规范;尺寸;砂轮;机床部件;工具;不平衡;试验;磨料制品;粘合;可允许性;定义
【英文主题词】:Abrasiveproducts;Abrasives;Balancing;Bound;Definitions;Deliveryconditions;Diameter;Dimensions;Grindingwheels;Machinetoolcomponents;Measurement;Measuringtechniques;Permissibility;Specifications;Testing;Tools;Unbalances
【摘要】:ThisInternationalStandardspecifiesthemaximumpermissiblevaluesofunbalancesforvariousgrindingwheelsofISO603-1toISO603-9andISO603-12toISO603-16intheas-deliveredcondition,withanoutsidediameterD>115mmandmaximumoperatingspeedvs≥16m/s.Italsospecifiesthemethodformeasuringtheunbalanceandthepracticalmethodfortestingwhetheragrindingwheelisacceptableornot.ThisInternationalStandardisapplicabletobondedabrasivegrindingwheelsintheas-deliveredcondition.ThisInternationalStandardisnotapplicableto—diamond,cubicboronnitrideornaturalstonegrindingwheels,orto—centrelesscontrolwheels,lappinganddiscwheels,ballwheelsorglassgrindingwheels.NOTE1Thevaluesgivenrefertothegrindingwheelitself,independentofanyunbalancewhichmayexistinthebalancingarbororinthemeansoffasteningittothisarbor.Thesevariouselements,togetherwiththeflangesorhub-flanges,areassumedtobebalanced,homogeneousandfreefromgeometricaldefects.NOTE2Theeffectsofunbalancearebasically—additionalstressesonthearbor,themachineanditsmounting,—excessivewearofthebearings,—vibrationprejudicialtothequalityofmachiningandincreasedinternalstressesinthegrindingwheel,and—increasedoperatorfatigue.
【中国标准分类号】:J43
【国际标准分类号】:25_100_70
【页数】:7P;A4
【正文语种】:英语
Product Code:SAE AS413
Title:Temperature Instruments (Reciprocating Engine Powered Aircraft) (NONCURRENT Nov 1996)
Issuing Committee:A-4 Aircraft Instruments Committee
Scope:This Aerospace Standard establishes the minimum sage performance standards for electrical type temperature instruments primarily for use with reciprocating engine powered transport aircraft, the operation of which may subject the instruments to the environmental conditions specified in Section 3.4. This Aerospace Standard covers two basic types of temperature instruments as follows: TYPE I Radiometer type, actuated by changes in electrical resistance of a temperature sensing electrical resistance element; the resistance changes being obtained by temperature changes of the temperature sensing resistance element. TYPE II: Millivoltmeter type, operated and actuated by varying E.M.F. output of a thermocouple; the varying E.M.F. input to the instrument being obtained by temperature changes of the temperature sensing thermocouple.