目前在北京，上海，深圳可以进行CRE考试，2008年CRE考试每年有2次考试，3月和7月。如果你的能力够的话可以尝试做做CRE题目。目前在美国地区得到广泛应用，在我国台湾和香港地区也有很多大公司要求CRE，此外，像国外Dell，Intel，hp，Sunmicro等公司有要求ODM可靠性工程师取得CRE资格证书。一般来说取得CRE证书后比没有取得证书薪资方面回增加2～3倍,目前国内正在逐步开始CRE的培训。
同时根据ASQ的要求，考试人员对各种不同学历的人都有要求。
ReliabilityEngineerCertificationStudyGuide
Testyourpreparednessfortheexamusingthisstudyguide.Answersareattheend.
- Whichofthefollowingisbestdefinedasthepracticeofusingparallelcomponentsandsubsystems?
- Maintainability
- Reliability
- Optimization
- Redundancy
- Balancingareliabilityrequirementagainstotherdesignparameters,suchasperformance,cost,orschedule,andthenanalyzingtheconsequencesofplacingspecialemphasisononeofthesefactorsiscalled
- reliabilityallocation
- reliabilitypredictions
- trade-offdecisions
- systemmodeling
- SoftwarereliabilityplanningincludesallofthefollowingEXCEPT
- selectingmodelsfordataanalysisandprediction
- modelingacquisitionofcomputersoftwaresystems
- trade-offsofgeneralpurposeprogramsvs.commerciallyavailableprograms
- trade-offsinvolvingcost,schedule,andfailureintensityofsoftwareproducts
- Thelifetimeofamechanicallifterisnormallydistributedwithameanof100hoursandastandarddeviationof3hours.Whatisthereliabilityofthelifterat106hours?
- Inananalysisofvariance,whichofthefollowingdistributionsisthebasisfordeterminingwhetherthevarianceestimatesareallfromthesamepopulation?
- Chisquare
- Student'st
- Normal
- F
- Afullfactorialdesignofexperimentshasfourfactors.Thefirstfactorhastwolevels,thesecondfactorhasthreelevels,thethirdfactorhastwolevels,andthefinalfactorhasfourlevels.Howmanyrunsarearerequiredforthisanalysis?
- Inacertainapplication,twoidenticaltransducersareusedtomeasurethevacuuminasystem.Thesystemisconsideredtohavefailedifeitherofthevacuumsreadbythetransducersvariesfromthestandardbymorethan10mmHg.Whichofthefollowingisthecorrectreliabilitylogicblockdiagramforthetransducerassembly?
- Assumingperfectswitchingandperfectstarting,whichofthefollowingsystemshasthelongestmeanlifeifeachsystemconsisitsofnunitswithidenticalreliability?
- Aseriessystem
- Aparallelsystem
- Akoutofnsystem
- Acoldstandbysystem
Questions9-11refertothefollowingsituation:
Ahighincidenceoffailureshasdevelopedduringaircraftacceptancetesting.Theidentifiedfailureisthataninstrumentpanellighthasmalfunctionedon6ofthelast10aircrafttested.ThisproblemneedstobeinvestigatedandaFailureReportingandCorrectiveActionSystem(FRACAS)needstobecompletedwithoutstoppingaircraftproduction.
- Thefirststepoftheinvestigationshouldbeto
- collectadditionaldataonsimilareventsoverthelasttwoyears
- conductfailureanalysistodeterminethefailuremodeandmechanism
- conductsurveillancetestingonsuspectcomponents
- establishacross-functionalteamtobrainstormonthecauseandeffect
- Ifthecauseofthefailureisdeterminedtobeafaultysubassemblymanufacturedonlybyasinglesupplier,andthissituationisthreateningtoshutdownaircraftproduction,thenextstepshouldbeto
- visitthesuppliertoassistindeterminingtherootcauseoftheproblem
- initiateasuppliercorrectiveactionandreturnalloftheunsortedinventory
- issueaGovernmentandIndustryDataExchangeProgram(GIDEP)alert
- updatetheinspectioninstructionandretrainreceivinginspection
- Ifacorrectiveactionnoticewassenttothesupplierofafaultysubassemblyandthesupplier'sresponsestatesthattherootcauseissimplyanoperationerror,thenextstepshouldbeto
- accepttheresponseandclosetheFRACAS
- visitthesuppliertodevelopabetterunderstandingoftherootcause
- issueaGovernmentandIndustryDataExchangeProgram(GIDEP)alert
- beginlookingforanewsupplier
- Whichofthefollowingisanappropriateuseforexperimentaldesign?
- Establishingproductrequirements
- Developingafault-treeanalysis
- Ensuringtherobustdesignofaproduct
- Analyzingcustomercomplaintreports
- WhichofthefollowingisNOTconsideredgoodpracticeinreliabilitydesign?
- Usingprovenparts
- Usingseriesdesign
- Usingfailuremodeandeffectsanalysis(FMEA)
- Simplifyingitemconfiguration
- AccordingtoTaguchi,robustlydesignedexperimentsshouldemployallofthefollowingtechniquesEXCEPT
- innerandouterarrays
- signal-to-noiseratios
- lineargraphs
- fold-overcapabilities
- Whichofthefollowingmeasurescanbeusedtofindaquickapproximationoftheavailabilityofasystem?
- Meantimetofailure(MTTF)andmeantimetorepair(MTTR)
- Failurerateandfailuremode
- Missiontimeandfailurerate
- Downtimeandtimetorepair
- Theinvestmentinautomatedtestequipmentisoftenjustifiedunderwhichofthefollowingcircumstances
- Numeroustestsmustbeperformed.
- Repairtimesmustbeshort.
- Conformancerecordsarerequired.
- Traceablerecordsarerequired.
- Foracompanyoperatingmultipleunitsofproductionequipment,theobservedfailurerateis42x10-6failuresperoperatinghour,andthepreventivemaintenancerateis320x10-6actionsperhour.Whatisthemeantimebetweencorrectiveandpreventivemaintenance(MTBM)?
- 2,688.2hr
- 2,762.4hr
- 2,840.9hr
- 26,935.0hr
- Allofthefollowingarepurposesofaproductionreliabilityassurancetest(PRAT)EXCEPTto
- detectsignificantshiftsbetweentheas-builtreliabilityandtheas-designedreliability
- assessperformanceagainstreliabilityrequirements
- assessactualproductreliabilityagainstreliabilityrequirements
- minimizetheneedforspecificprocesscontrols
- Theprimaryaimofsequential-lifetestingistodetermine
- theprobabilitydensityfunctionoffailures
- themeantimebetweenfailures(MTBF)
- whetherthestress-levelvariationissignificant
- whetheralotmeetsthereliabilitygoal
- Asmallsamplefromaproductpopulationissubjectedtomultiplelevelsofelevatedstress.Whichofthefollowingcouldbeusedtomodelthelifeoftheproduct?
- Poissonprocess
- Pascalexpansion
- Paretorule
- Inversepowerlaw
- Whichofthefollowingareimportantelementsintheconceptofconsumerrisk?
- Frequency
- Schedule
- Damage
- IandIIonly
- IandIIIonly
- IIandIIIonly
- I,II,andIII
- Whichofthefollowingtoolsisusedtoanalyzethesafetyofasystem?
- Fault-treeanalysis
- Failurereportingandcorrectiveactionsystem
- Reliabilityallocation
- Environmentalstressscreening
- Acomponentfailsontheaverageofonceevery4yearswith75%ofthefailuresobservedtooccurduringstormyweather.Ifthereare12hoursofstormyweathertoevery240hoursofgoodweather,whatarethefailureratesforstormyandgoodweather,respectively?
- Ago/no-godeviceistesteduntilitfails.IfXisthenumberofteststofirstfailurewithnowearoutpresent,andtheprobabilityofsuccessoneachtestis.99,thentheprobabilitythatXisgreaterthan5is:
- Givenareliabilitygrowthtestinprogresshavingaccumulated4failuresduring5000testhours.Assumeagrowthrateof0.3,whatistheexpectedMTBFat25,000hours?
- 1250hrs
- 1895hrs
- 2026hrs
- 3856hrs
- AWeibulldistributionhasbeenfoundtodescribethereliabilitydistributionwithcharacteristiclife=12,000hours,andshapeparameter
 Ifthesearegoodparameters,atwhattimewillreliabilitydecreaseto.85?- 2204hrs
- 3503hrs
- 4838hrs
- 5254hrs
Answers: | | 1.d | 6.b | 11.b | 16.b | 21.a | 26.d | | 2.c | 7.a | 12.c | 17.b | 22.a | | | 3.b | 8.d | 13.b | 18.d | 23.a | | 4.a | 9.b | 14.d | 19.d | 24.c | | 5.d | 10.b | 15.a | 20.d | 25.c |
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