毕业论文外文翻译-机械工程设计选材基础知识

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1、Aknowledge-basedsystemformaterialsselectioninmechanicalengineeringdesignS.M.SapuanAbstractThispaperstudiesvariousworkonthedevelopmentofcomputerizedmaterialselectionsystem.TheimportanceofKnowledge-basedsystem(KBS)inthecontextofconcurrentengineeringisexplained.ThestudyofKB

2、Sinmaterialselectioninanengineeringdesignprocessisdescribed.Thedevelopmentinmaterialsdatabases,whichsometimesserveasmaterialselectionpackages,isalsodiscussed.TheuseofKBSinmaterialselectionandtheapplicationinthedomainofpolymeric-basedcompositearechosenastypicalexamples.20

3、01PublishedbyElsevierScienceLtd.1.IntroductionMaterialsselectionisatasknormallycarriedoutbydesignandmaterialsengineers.GutteridgeandWater-man[1]describedtheaimofmaterialsselectionastheidentificationofmaterials,whichafterappropriatemanufacturingoperations,willhavethedimen

4、sions,shapeandpropertiesnecessaryfortheproductorcomponenttodemonstrateitsrequiredfunctionatthelowestcost.Forthepurposeofmaterialselection,thousandsofdatawouldbeneededtocharacterizeallthegradesofmaterials.Manyselectionsystemsareavailabletohelpdesignengineerstochoosethemos

5、tsuitablematerials.Atthemostbasiclevel,designengineerscouldusetablesofmaterialpropertiesindatabooks.However,datasheetsareincompleteandoncepublished,theyaredifficulttoupdate.DoddandFairfull[2]describedhowinformationaboutengineeringmaterials,canbedividedintotwomaincategori

6、es,i.e.dataandknowledge.Dataisdefinedastheresultsofmeasurements,whereasknowledgerepresentstheconnectionsbetweenitemsofdata,thesourceofthisknowledge,whichcontributestoanunderstandingoftheresults.BoththecomputerizeddatabaseandtheKBSofmaterialselectionwillbedescribedinthefo

7、llowingsections.2.Thematerialdatabaseformaterialsselection2.1.SupportingdataandrigorouslogicforthehypothesisandobseruationInrecentyears,attentionisbeingmadetotheuseofcomputersystemstostoreandprocessdataregardingthepropertiesofmaterials.Itenablesthedesignerstoachievelarge

8、capacityandrapidretrievalfromacomputerdatabasetoprovideeasyaccesstothematerialsdata.AccordingtoPrasad[3