【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】:
基本信息
| 标准名称： | ３ＤＤ１５５型、３ＤＤ１５６型ＮＰＮ硅扩散台面低频大功率三极管 |
| 英文名称： | Detail specification for silicon NPN diffused mesa low-frequency high power transistors,Type 3DD155 and 3DD156 |
| 中标分类： |
能源、核技术 >>
能源、核技术综合 >>
技术管理 |
| 发布日期： | 1980-11-27 |
| 实施日期： | 1981-06-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 2010-01-20 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 能源 核技术 能源 核技术综合 技术管理