Product Code:SAE AMS1640
Title:Corrosion Removing Compound, for Aircraft Surfaces
Issuing Committee:Ams J Aircraft Maintenance Chemicals And Materials Committee
Scope:This specification covers a corrosion-removing compound in the form of a liquid concentrate. Primarily for removing pitting corrosion and heavy surface oxidation from exterior aluminum surfaces of aircraft. Compounds meeting the requirements of this specification may cause hydrogen embrittlement of high-strength steels and will remove cadmium plate.【英文标准名称】:TestMethodforDeterminingtheEffectiveElasticParameterforX-RayDiffractionMeasurementsofResidualStress
【原文标准名称】:X-射线衍射量测定剩余应力的方法
【标准号】:ANSI/ASTME1426-1994
【标准状态】:现行
【国别】:美国
【发布日期】:1994
【实施或试行日期】:1999-02-18
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:X射线衍射分析;残余应力;参数
【英文主题词】:x-raydiffractionanalysis;residualstresses;parameters
【摘要】:Thistestmethodcoversaprocedureforexperimentallydeterminingtheeffectiveelasticparameter,E,fortheevaluationofresidualandappliedstressesbyX-raydiffractiontechniques.Theeffectiveelasticparameterrelatesmacroscopicstresstothestrainmeasuredinaparticularcrystallographicdirectioninpolycrystallinesamples.EshouldnotbeconfusedwithE,themodulusofelasticity.Rather,itisnominallyequivalenttoE/(1+)fortheparticularcrystallographicdirection,whereisPoisson'sratio.Theeffectiveelasticparameterisinfluencedbyelasticanisotropyandpreferredorientationofthesamplematerial.ThistestmethodisapplicabletoallX-raydiffractioninstrumentsintendedformeasurementsofmacroscopicresidualstressthatusemeasurementsofthepositionsofthediffractionpeaksinthehighback-reflectionregiontodeterminechangesinlatticespacing.ThistestmethodisapplicabletoallX-raydiffractiontechniquesforresidualstressmeasurement,includingsingle,double,andmultipleexposuretechniques.Thevaluesstatedininchpoundunitsaretoberegardedasthestandard.TheSIunitsgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P31
【国际标准分类号】:71_040_50
【页数】:
【正文语种】:英语