【英文标准名称】:Samplingproceduresforinspectionbyvariables-Part1:Specificationforsinglesamplingplansindexedbyacceptancequalitylimit(AQL)forlot-by-lotinspectionforasinglequalitycharacteristicandasingleAQL
【原文标准名称】:计量检验的抽样程序.第1部分:按接收质量限(AQL)检索的单一质量特性和单一AQL的逐批检验一次抽样计划的规范
【标准号】:ISO3951-1-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-04
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC69
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;检验;定义;参数;抽样方法;接收质量限;AQL值;错误;抽样特性曲线;特性;缺陷与故障;统计学;计量检查;验收抽样;表(数据);统计质量控制;抽样表;随机试样;样品试验;图示;质量保证;批量检验
【英文主题词】:Acceptablequalitylimits;Acceptancesampling;AQL-value;Batchtesting;Characteristics;Defects;Definitions;Diagrams;Errors;Inspection;Inspectionbyvariables;Inspectionlots;Limits(mathematics);Multilingual;Operatingcharacteristiccurve;Parameters;Performancecharacteristics;Qualityassurance;Randomsamples;Sampletests;Samplingmethods;Samplingtables;Statisticalqualitycontrol;Statistics;Tables(data);Testing
【摘要】:ThispartofISO3951specifiesanacceptancesamplingsystemofsinglesamplingplansforinspectionbyvariables,inwhichtheacceptabilityofalotisimplicitlydeterminedfromanestimateofthepercentageofnonconformingitemsintheprocess,basedonarandomsampleofitemsfromthelot.ThispartofISO3951isprimarilydesignedforapplicationunderthefollowingconditions:a)wheretheinspectionprocedureistobeappliedtoacontinuingseriesoflotsofdiscreteproductsallsuppliedbyoneproducerusingoneproductionprocess;b)whereonlyasinglequalitycharacteristicxoftheseproductsistakenintoconsideration,whichmustbemeasurableonacontinuousscale;c)wherethemeasurementerrorisnegligible,i.e.withastandarddeviationnomorethan10%oftheprocessstandarddeviation;d)whereproductionisstable(understatisticalcontrol)andthequalitycharacteristicxisdistributedaccordingtoanormaldistributionoracloseapproximationtothenormaldistribution;e)whereacontractorstandarddefinesanupperspecificationlimitU,alowerspecificationlimitL,orboth;anitemisqualifiedasconformingifandonlyifitsmeasuredqualitycharacteristicxsatisfiestheappropriateoneofthefollowinginequalities:1)xWL(i.e.thelowerspecificationlimitisnotviolated);2)xuU(i.e.theupperspecificationlimitisnotviolated);3)xWLandxuU(i.e.neitherthelowernortheupperspecificationlimitisviolated).Inequalities1)and2)arecalledcaseswithasinglespecificationlimit,and3)acasewithdoublespecificationlimits.Ifdoublespecificationlimitsapply,itisassumedinthispartofISO3951thatconformancetobothspecificationlimitsisequallyimportanttotheintegrityoftheproduct;insuchcasesitisappropriatetoapplyasingleAQLtothecombinedpercentageofproductoutsidethetwospecificationlimits.Thisisreferredtoascombinedcontrol.
【中国标准分类号】:A00
【国际标准分类号】:03_120_30
【页数】:103P;A4
【正文语种】:英语


Product Code:SAE AIR4003
Title:Report on Aircraft Engine Containment
Issuing Committee:Engine Containment Ad Hoc Committee
Scope:To gather and analyze service data on aircraft propulsion turbine engine rotating part non-containment failures on record, assess the resulting aircraft damage, and determine the rate of past occurrences based on these data. In addition, to classify incidents by cause and consequence, to identify areas of greatest concern, and to recommend areas for greatest potential improvement. While the previous SAE Committee report, AIR 1537, focused solely on fixed wing commercial engine experience, the current Committee decided that the scope should be expanded to collect the data relating to helicopter and general aviation operations. The inclusion of helicopter experience was prompted by the FAA request to anticipate the projected substantial increase in commercial use of helicopters within the next decade. For completeness, general aviation experience, including commuter airlines, was considered significant enough to include in the current committee's activities. At the direction of the Aerospace Council, all three classes of engines have been treated in a single report. It is expected that the data, conclusions and recommendations of this report will be accepted as a standard reference by anyone dealing with turbine engine rotor non-containment