【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试验方法
【标准号】:ASTME1426-1998(2003)
【标准状态】:现行
【国别】:
【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】:残余应力;参数;X射线衍射分析
【英文主题词】:elasticparameter;residualstress;x-raydiffraction
【摘要】:ThistestmethodprovidesstandardproceduresforexperimentallydeterminingtheeffectiveelasticparameterforX-raydiffractionmeasurementofresidualandappliedstresses.Italsoprovidesastandardmeansofreportingtheprecisionoftheparameter.Thistestmethodisapplicabletoanycrystallinematerialwhichexhibitsalinearrelationshipbetweenstressandstrainintheelasticrange.ThistestmethodshouldbeusedwheneverresidualstressesaretobeevaluatedbyanX-raydiffractiontechniqueandtheeffectiveelasticparameterofthematerialisunknown.1.1Thistestmethodcoversaprocedureforexperimentallydeterminingtheeffectiveelasticparameter,Eeff,fortheevaluationofresidualandappliedstressesbyX-raydiffractiontechniques.Theeffectiveelasticparameterrelatesmacroscopicstresstothestrainmeasuredinaparticularcrystallographicdirectioninpolycrystallinesamples.EeffshouldnotbeconfusedwithE,themodulusofelasticity.Rather,itisnominallyequivalenttoE/(1+957;)fortheparticularcrystallographicdirection,where957;isPoisson'sratio.Theeffectiveelasticparameterisinfluencedbyelasticanisotropyandpreferredorientationofthesamplematerial.1.2ThistestmethodisapplicabletoallX-raydiffractioninstrumentsintendedformeasurementsofmacroscopicresidualstressthatusemeasurementsofthepositionsofthediffractionpeaksinthehighback-reflectionregiontodeterminechangesinlatticespacing.1.3ThistestmethodisapplicabletoallX-raydiffractiontechniquesforresidualstressmeasurement,includingsingle,double,andmultipleexposuretechniques.1.4Thevaluesstatedininchpoundunitsaretoberegardedasthestandard.TheSIunitsgiveninparenthesesareforinformationonly.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】:4P.;A4
【正文语种】:


【英文标准名称】:StandardTestMethodforFieldDeterminationofApparentSpecificGravityofRockandManmadeMaterialsforErosionControl
【原文标准名称】:为冲刷控制现场测定岩石和人造材料的特殊外观重力的标准试验方法
【标准号】:ASTMD5779a-1995
【标准状态】:作废
【国别】:美国
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:材料;岩石;冲刷控制;音域测量
【英文主题词】:Erosioncontrol;Fieldmeasurement;Materials;Rocks;Soils
【摘要】:
【中国标准分类号】:Q21
【国际标准分类号】:13_080_20
【页数】:2P;A4
【正文语种】:英语