SAE AMS4158 Aluminum Alloy, Extrusions 6.8 Zn - 2.75 Mg - 2.0 Cu - 0.3 Cr (7178-T6) (Cancelled Jul 1981)
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来源:标准资料网
Product Code:SAE AMS4158
Title:Aluminum Alloy, Extrusions 6.8 Zn - 2.75 Mg - 2.0 Cu - 0.3 Cr (7178-T6) (Cancelled Jul 1981)
Issuing Committee:
Scope:
【英文标准名称】:Specificationforcalibrationofstylusinstruments
【原文标准名称】:表面结构测量用探针式仪器规范
【标准号】:BS6393-1987
【标准状态】:现行
【国别】:英国
【发布日期】:1987-02-27
【实施或试行日期】:1987-02-27
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:磨损;轮廓测定仪;试样;尺寸公差;尺寸;测量仪器;轮廓测量;控制样品;沟;外形;作标记;误差;校正;表面粗糙度测定
【英文主题词】:Calibration;Calipers;Controlsamples;Dimensions;Finishes;Marking;Measuringinstruments;Meters;Profile;Roughness;Roughness(surface);Specifications;Surface-roughnessmeasurement
【摘要】:Characteristicsofspecimensforthecalibrationofstylusinstruments.Appendicescovertheircalibration,useandreferenceconditions.
【中国标准分类号】:N13
【国际标准分类号】:17_040_30
【页数】:24P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforEstimatingandMonitoringtheUncertaintyofTestResultsofaTestMethodinaSingleLaboratoryUsingaControlSampleProgram
【原文标准名称】:用对照试样方案的单个实验室试验方法的试验结果不确定度进行估算和监测用标准实施规程
【标准号】:ASTME2554-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E11.20
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:控制图表;控制样品;测定;估算;检验(质量保证);实验室;实验室测试;测量不确定度;监督(认可);试验结果;测试
【英文主题词】:controlchart;controlsample;intermediateprecision;testresult;uncertainty
【摘要】:LaboratoriesaccreditedunderISO17025arerequiredtopresentuncertaintyestimatesfortheirtestresults.Thispracticeprovidesproceduresthatusetestresultstodevelopuncertaintyestimatesforanindividuallaboratory.Generally,thesetestresultswillbefromasinglesampleofstableandhomogeneousmaterialknownasacontrolorchecksample.Thetruevalueofthecharacteristic(s)ofthecontrolsamplebeingmeasuredwillordinarilybeunknown.However,thismethodologymayalsobeusedifthecontrolsampleisareferencematerial,inwhichcasethetestmethodbiasmayalsobeestimatedandincorporatedintotheuncertaintyestimate.Manytestmethodsdonothavetruereferencematerialsavailabletoprovidetraceablechainsofuncertaintyestimation.Thispracticealsoallowsforongoingmonitoringofthelaboratoryuncertainty.Asestimatesofthelevelofuncertaintychange,possiblyascontributionstouncertaintyareidentifiedandminimized,revisiontothelaboratoryuncertaintywillbepossible.1.1Thispracticedescribestechniquesforalaboratorytoestimatetheuncertaintyofatestresultusingdatafromtestresultsonacontrolsample.1.2Uncertaintyasdefinedbythispracticeappliestothecapabilitiesofasinglelaboratory.Anyestimateofuncertaintydeterminedthroughtheuseofthispracticeappliesonlytotheindividuallaboratoryforwhichthedataarepresented.1.3Thelaboratoryusesawelldefinedandestablishedtestmethodindeterminingaseriesoftestresults.Theuncertaintyestimatedusingthispracticeonlyapplieswhenthesametestmethodisfollowed.Theuncertaintyonlyappliesforthematerialtypesrepresentedbythecontrolsamples,andmultiplecontrolsamplesmaybeneeded,especiallyifthemethodhasdifferentprecisionfordifferentsampletypesorresponselevels.1.4Theuncertaintyestimatedeterminedbythispracticerepresentstheintermediateprecisionoftestresults.Thisestimateseekstoquantifythetotalvariationexpectedwithinasinglelaboratoryusingasingleestablishedtestmethodwhileincorporatingasmanyknownsourcesofvariationaspossible.1.5Thispracticedoesnotestablisherrorestimates(errorbudget)attributedtoindividualfactorsthatcouldinfluenceuncertainty.1.6Thispracticedescribestheuseofcontrolchartstoevaluatethedataobtainedandpresentsaspecialtypeofcontrolcharttomonitortheestimateofuncertainty.1.7ThesystemofunitsforthisStandardisnotspecified.DimensionalquantitiesintheStandardarepresentedonlyasillustrationsofcalculationmethods.Theexamplesarenotbindingonproductsortestmethodstreated.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A00
【国际标准分类号】:03_120_10;19_020
【页数】:7P.;A4
【正文语种】:
