ASTM E1426-1998(2009)e1 残余应力X-射线缺陷测量效果弹性参数测定的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminingtheEffectiveElasticParameterforX-RayDiffractionMeasurementsofResidualStress
【原文标准名称】:残余应力X-射线缺陷测量效果弹性参数测定的标准试验方法
【标准号】:ASTME1426-1998(2009)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:E28.13
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:elasticparameter;residualstress;x-raydiffraction;Crystallatticestructure;Effectiveelasticparameter(Eeff);Macroscopicanalysis;Polycrystallinematerials;Residualstress;Stress--metallicmaterials;X-raydiffractionanalysis
【摘要】:ThistestmethodprovidesstandardproceduresforexperimentallydeterminingtheeffectiveelasticparameterforX-raydiffractionmeasurementofresidualandappliedstresses.Italsoprovidesastandardmeansofreportingtheprecisionoftheparameter.Thistestmethodisapplicabletoanycrystallinematerialwhichexhibitsalinearrelationshipbetweenstressandstrainintheelasticrange.ThistestmethodshouldbeusedwheneverresidualstressesaretobeevaluatedbyanX-raydiffractiontechniqueandtheeffectiveelasticparameterofthematerialisunknown.1.1Thistestmethodcoversaprocedureforexperimentallydeterminingtheeffectiveelasticparameter,Eeff,fortheevaluationofresidualandappliedstressesbyX-raydiffractiontechniques.Theeffectiveelasticparameterrelatesmacroscopicstresstothestrainmeasuredinaparticularcrystallographicdirectioninpolycrystallinesamples.EeffshouldnotbeconfusedwithE,themodulusofelasticity.Rather,itisnominallyequivalenttoE/(1+x03BD;)fortheparticularcrystallographicdirection,wherex03BD;isPoisson''sratio.Theeffectiveelasticparameterisinfluencedbyelasticanisotropyandpreferredorientationofthesamplematerial.1.2ThistestmethodisapplicabletoallX-raydiffractioninstrumentsintendedformeasurementsofmacroscopicresidualstressthatusemeasurementsofthepositionsofthediffractionpeaksinthehighback-reflectionregiontodeterminechangesinlatticespacing.1.3ThistestmethodisapplicabletoallX-raydiffractiontechniquesforresidualstressmeasurement,includingsingle,double,andmultipleexposuretechniques.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:71_040_50
【页数】:5P.;A4
【正文语种】:英语