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.ThestudyofKBSinmater

2、ialselectioninanengineeringdesignprocessisdescribed.Thedevelopmentinmaterialsdatabases,whichsometimesserveasmaterialselectionpackages,isalsodiscussed.TheuseofKBSinmaterialselectionandtheapplicationinthedomainofpolymeric-basedcompositearechosenastypicalexamples・2001PublishedbyEls

3、evierScienceLtd・l.IntroductionMaterialsselectionisatasknormallycarriedoutbydesignandmaterialsengineers・GutteridgeandWater-man[1]describedtheaimofmaterialsselectionastheidentificationofmaterials,whichafterappropriatemanufacturingoperations,willhavethedimensions,shapeandproperties

4、necessaryfortheproductorcomponenttodemonstrateitsrequiredfunctionatthelowestcost.Forthepurposeofmaterialselection,thousandsofdatawouldbeneededtocharacterizeallthegradesofmaterials.Manyselectionsystemsareavailabletohelpdesignengineerstochoosethemostsuitablematerials.Atthemostbasi

5、clevel,designengineerscouldusetablesofmaterialpropertiesindatabooks・However,datasheetsareincompleteandoncepublished,theyaredifficulttoupdate.DoddandFairfull[2]describedhowinformationaboutengineeringmaterials,canbedividedintotwomaincategories,i.e.dataandknowledge.Dataisdefinedast

6、heresultsofmeasurements,whereasknowledgerepresentstheconnectionsbetweenitemsofdata,thesourceofthisknowledge,whichcontributestoanunderstandingoftheresults.BoththecomputerizeddatabaseandtheKBSofmaterialselectionwillbedescribedinthefollowingsections.2.Thematerialdatabaseformaterial

7、sselection2.1.SupportingdataandrigorouslogicforthehypothesisandobseruationInrecentyears,attentionisbeingmadetotheuseofcomputersystemstostoreandprocessdataregardingthepropertiesofmaterials.Itenablesthedesignerstoachievelargecapacityandrapidretrievalfromacomputerdatabasetoprovidee

8、asyaccesstothematerialsdata.AccordingtoPrasad[3