ASTM E289-2004 用干涉测量法测试刚性固体的线性热膨胀的标准试验方法

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【英文标准名称】:StandardTestMethodforLinearThermalExpansionofRigidSolidswithInterferometry
【原文标准名称】:用干涉测量法测试刚性固体的线性热膨胀的标准试验方法
【标准号】:ASTME289-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E37.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:机械试验;热学;测量技术;试验;材料;金属;固体;延伸;干涉;干涉测量法
【英文主题词】:coefficientoflinearthermalexpansion;contraction;expansion;Fizeauinterferometer;interferometry;Michelsoninterferometer
【摘要】:1.1ThistestmethodcoversthedeterminationoflinearthermalexpansionofrigidsolidsusingeitheraMichelsonorFizeauinterferometer.1.2Forthispurpose,arigidsolidisdefinedasamaterialwhich,attesttemperatureandunderthestressesimposedbyinstrumentation,hasanegligiblecreep,insofarassignificantlyaffectingtheprecisionofthermallengthchangemeasurements.1.3Itisrecognizedthatmanyrigidsolidsrequiredetailedpreconditioningandspecificthermaltestschedulesforcorrectevaluationoflinearthermalexpansionbehaviorforcertainmaterialapplications.Sinceageneralmethodoftestcannotcoverallspecificrequirements,detailsofthisnatureshouldbediscussedintheparticularmaterialspecifications.1.4Thistestmethodisapplicabletotheapproximatetemperaturerange150to700C.Thetemperaturerangemaybeextendeddependingontheinstrumentationandcalibrationmaterialsused.1.5Theprecisionofmeasurementofthisabsolutemethod(betterthan40nm/(mK))issignificantlyhigherthanthatofcomparativemethodssuchaspushroddilatometry(forexample,TestMethodsD696andE228)andthermomechanicalanalysis(forexample,TestMethodE831)techniques.Itisapplicabletomaterialshavinglowandeitherpositiveornegativecoefficientsofexpansion(below5m/(mK))andwhereonlyverylimitedlengthsorthicknessofotherhigherexpansioncoefficientmaterialsareavailable.1.6Computerorelectronicbasedinstrumentation,techniquesanddataanalysissystemsequivalenttothistestmethodcanbeused.Usersofthetestmethodareexpresslyadvisedthatallsuchinstrumentsortechniquesmaynotbeequivalent.Itistheresponsibilityoftheusertodeterminethenecessaryequivalencypriortouse.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:
【页数】:9P.;A4
【正文语种】: