Materials selection and design considerations Chapter 20

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1、Chapter20/MaterialsSelectionandDesignConsiderationsShowninthisphotographisthelandingoftheAtlantisSpaceShuttleOrbiter.Thischapterdiscussesthemateri-alsthatareusedforitsouterairframe’sthermalprotectionsystem.[PhotographcourtesytheNationalAeronauticsandSpaceAdmi

2、nistration(NASA).]WhyStudyMaterialsSelectionandDesignConsiderations?Perhapsoneofthemostimportanttasksthatanengi-essentialthattheengineeringstudentbecomefamiliarneermaybecalledupontoperformisthatofmaterialswithandversedintheproceduresandprotocolsthatselectionw

3、ithregardtocomponentdesign.Inappro-arenormallyemployedinthisprocess.Thischapterpriateorimproperdecisionscanbedisastrousfromdiscussesmaterialsselectionissuesinseveralcontextsbotheconomicandsafetyperspectives.Therefore,itisandfromvariousperspectives.795Learning

4、ObjectivesAftercarefulstudyofthischapteryoushouldbeabletodothefollowing:1.Describehowthestrengthperformanceindexfor6.(a)Namethethreecomponentsofthethermalasolidcylindricalshaftisdetermined.protectionsystemfortheSpaceShuttleOrbiter.2.Describethemannerinwhichma

5、terialsselection(b)Describethecomposition,microstructure,chartsareemployedinthematerialsselectionandgeneralpropertiesoftheceramictilesthatprocess.areusedontheSpaceShuttleOrbiter.3.Brieflydescribethestepsthatareusedtoascer-7.Describethecomponentsandtheirfunctio

6、nsfortainwhetherornotaparticularmetalalloyisanintegratedcircuitleadframe.suitableforuseinanautomobilevalvespring.8.(a)Nameandbrieflydescribethethree4.Listandbrieflyexplainsixbiocompatibilitycon-processesthatarecarriedoutduringintegratedsiderationsrelativetomate

7、rialsthatareem-circuitpackaging.(b)Notepropertyrequire-ployedinartificialhipreplacements.mentsforeachoftheseprocesses,and,inaddi-5.Namethefourcomponentsfoundintheartificialtion,citeatleasttwomaterialsthatarehipreplacement,and,foreach,listitsspecificemployed.mate

8、rialrequirements.20.1INTRODUCTIONVirtuallytheentirebooktothispointhasdealtwiththepropertiesofvariousmaterials,howthepropertiesofaspecificmaterialaredependentonitsstructure,and,inmanycases,