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【英文标准名称】:DentalOperator’sStools
【原文标准名称】:牙医的工作凳
【标准号】:ANSI/ADA74-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002-03-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ADA(Organization)
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Specifiesrequirements,recommendationsandmethodsoftestfordentaloperator'sstoolsaswellasrequirementsformanufacturer'sinstructions,markingandpackaging.Itcoversalsorecommendationstomanufacturersonthedesignoftools.
【中国标准分类号】:C33
【国际标准分类号】:11_060_20
【页数】:
【正文语种】:英语


【英文标准名称】:StandardTestMethodforVerifyingtheAlignmentofX-RayDiffractionInstrumentationforResidualStressMeasurement
【原文标准名称】:残余应力测量用X射线衍射仪校准检定的测试方法
【标准号】:ASTME915-1996(2002)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:机械试验;仪器装置;残余应力;平衡;X射线;衍射;金相学;测量;试验
【英文主题词】:alignment;residualstress;x-raydiffraction
【摘要】:ThistestmethodprovidesameansofverifyinginstrumentalignmentinordertoquantifyandminimizesystematicexperimentalerrorinX-raydiffractionresidualstressmeasurement.ThismethodissuitableforapplicationtoconventionaldiffractometersortoX-raydiffractioninstrumentationofeitherthedivergingorparallelbeamtypes.3,4Applicationofthistestmethodrequirestheuseofaflatspecimenofstress-freematerialthatproducesdiffractionintheangularregionofthediffractionpeaktobeusedforstressmeasurement.Thespecimenmustbesufficientlyfine-grainedsothatlargenumbersofindividualcrystalscontributetothediffractionpeakproduced.Thecrystalsmustprovideintensediffractionatallanglesoftilt,x03C8;,whichwillbeemployed(seeNote1).Note18212;Completefreedomfrompreferredorientationinthestressfreespecimenis,however,notcriticalintheapplicationofthetechnique.1.1Thistestmethodcoversthepreparationanduseofaflatstress-freetestspecimenforthepurposeofcheckingthesystematicerrorcausedbyinstrumentmisalignmentorsamplepositioninginX-raydiffractionresidualstressmeasurement,orboth.1.2ThistestmethodisapplicabletoapparatusintendedforX-raydiffractionmacroscopicresidualstressmeasurementinpolycrystallinesamplesemployingmeasurementofadiffractionpeakpositioninthehigh-backreflectionregion,andinwhichthe,2,androtationaxescanbemadetocoincide(see).1.3Thistestmethoddescribestheuseofironpowderwhichhasbeeninvestigatedinround-robinstudiesforthepurposeofverifyingthealignmentofinstrumentationintendedforstressmeasurementinferriticormartensiticsteels.Toverifyinstrumentalignmentpriortostressmeasurementinotheralloys,basemetalpowderhavingthesamecrystalstructureasthealloyshouldbepreparedinsimilarfashionandusedtocheckinstrumentalignmentattheappropriatediffractionangle.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H26
【国际标准分类号】:19_100
【页数】:3P.;A4
【正文语种】: