【英文标准名称】:ISOgeneralpurposemetricscrewthreads-Tolerances-Part1:Principlesandbasicdata
【原文标准名称】:ISO一般用途米制螺纹公差第1部分:原则和基本数据
【标准号】:ISO965-1-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-12
【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/TC1
【标准类型】:()
【标准水平】:()
【中文主题词】:公差(测量);名称与符号;名称与符号;螺纹;螺纹;螺纹形状;螺距;公差带;厘米克秒制;ISO螺纹;螺钉;螺钉;外螺纹;内螺纹;米制的;形状公差;尺寸;标准螺纹;直径;米制螺纹;ISO微型螺纹;螺母;螺母;ISO米制螺纹;踏步竖板;螺纹牙型;基本牙型;紧配合螺纹;平行螺纹;紧固件;尺寸公差;规范;米制;标准公差;标准量器
【英文主题词】:Basicprofiles;CGSsystem;Close-fitthreads;Designations;Diameter;Dimensionaltolerances;Dimensions;Externalthreads;Fasteners;Formtolerances;Internalthreads;ISOmetricthreads;ISOminiaturescrewthreads;ISOscrewthreads;Metric;Metricscrewthreads;Normalthreads;Nuts;Parallelthreads;Pitchdiameter;Risers;Screwthreadprofiles;Screwthreads;Screws(bolts);Specifications;Standardmeasures;Standardtolerances;Threadforms;Threadpitch;Threads;Tolerancezones;Tolerances(measurement)
【摘要】:ThispartofISO965specifiesthebasicprofileforISOgeneralpurposemetricscrewthreads(M)conformingtoISO261.ThetolerancesystemreferstothebasicprofileinaccordancewithISO68-1.
【中国标准分类号】:J04
【国际标准分类号】:21_040_10
【页数】:18P;A4
【正文语种】:英语


【英文标准名称】:Reliabilityoffibreopticinterconnectingdevicesandpassiveopticalcomponents-Productscreening
【原文标准名称】:光纤互连装置和无源光学部件可靠性.产品屏蔽
【标准号】:BSEN62005-4-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-03-15
【实施或试行日期】:2000-03-15
【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】:纤维光学连接器;纤维光学;设计;光学纤维;产品试验;失效;可靠度;质量控制;衰弱率
【英文主题词】:Adjustment;Adjustments;Classifications;Components;Connectiontechnology;Connectoredjoints;Damping;Dampingcapacity;Electricplugs;Fasteners;Fibreoptics;Glassfibrecables;Glassfibres;Measuringtechniques;Methods;Monomodefibres;Opticalwaveguides;Producttests;Reliability;Testing;Validation
【摘要】:ThisInternationalStandarddescribesproductscreening.Aproperproductscreenisactuallyaprocess,notatest.Asaprocess,itismaintainedandconstantlyvalidatedtoensureitachievesthepurposeforwhichitwasdefined.Thisprocessisappliedtoaproductinordertoinduceproductswithaknownfailuremechanism,tofailinacontrolledsituationbeforetheproductisdeployedinthefield.Ifthisprocessisproperlyapplied,thenallinfantmortalityfailuresinthefield,associatedwiththefailuremechanism(s)forthescreen,willbeeliminated.Figure1showstheclassical"bathtub"three-regioncurveoffailureratesformostproducts.Althoughthefailureratesofpassiveopticalcomponentshavenotbeenconclusivelyshowntofollowthiscurve,itisusefulforillustrativepurposes.Screeningisknownforsomeproductsasaproofstressorinthecaseofelectronics,asa"burn-inprocess".Whenappliedtoaproduct,itwillnormallyaffectthefailurerateappliedduringtheinfantmortalityportionoftheproductlifecycle.Ifthescreenisproperlychosen,itwillinduceaportionoftheinfantmortalityfailurescausedbythechosenfailuremechanism(s)tooccurinthemanufacturingcycle,earlierthanwouldnormallybeseenintheunscreenedpopulationshowninthedashedline.Also,itshouldbenotedthataproperlyappliedscreendoesnotweakenordegradethewear-outorendoflifeperformanceofaproductpopulation.Inanycase,thescreenshouldalsonotaffectthemiddleregionofnormallifeutilization.Screeningandthedecisiontoapplyascreentoaproductprocessshouldneverbearequirement.Itshouldbedesignatedasanoptionoranalternative.Onceproducttestingidentifiesafailuremechanisminapopulationorsub-populationofaproduct,screeningtoremovethatmechanismisonlyonealternative.Equallyvalid,andinmostcasespreferable,isthealternativetomakedesignormanufacturingprocessimprovementstoeliminatethemechanism.Obviously,anychangestotheproductarethenrevalidated,andthescreenisrevalidatedaswell.However,thedecisiontochoosewhethertoscreenorimprovetheproductshouldbebasedoneconomics,customerexpectations,andproductuse.
【中国标准分类号】:L23
【国际标准分类号】:33_180_20
【页数】:8P.;A4
【正文语种】:英语