美国留学申请：PS范文(机械工程专业
2010-09-2717:14:20来源：留学E路通字号：||范文1：
Mechanicalengineeringisthefoundationofindustry.Itplaysakeyroleinthenationaleconomy.It’sbroadfieldincludinggeneralengineering,aeronautical,chemicalandnuclearengineering,etc.Providesasufficientroomofchoicesformetorealizethedreamofbecomingascientistoramechanicalengineer.ItwaswiththisfactinmindthatIdecidedtochoosemechanicalengineeringasthemajorfieldofstudyforbothundergraduateandgraduatecareeratTsinghuaUniversity.
DuringnearlyeightyearsofstudyatTsinghuaUniversity,Icompletedatotalof47coursesinundergraduatestudy,14coursesingraduatestudy.Themajorcoursesthatinterestedmemostincluded:TheoreticalMechanics,StrengthofMaterials,ElasticityandPlasticityMechanicalAnalysisofPlasticDeformationProcesses,TheoryofMetalForming,ComputerLanguageandProgramming,MechanicalDesign,etc…Aftergraduation,IenteredtheFirstHeabyMachineryWorks(innortheastofChina.Duringthisperiod,Ibecamefamiliarwiththedesignandmanufacturingofsomeheavymachines,thusfurtheringmyinterestinmechanicalengineering.Atthesametime,Ifoundthatmanygoodideasofdesigncouldnotbeputintoexistencebecauseofthebackwardnessinrawmaterialqualityandprocessingtechniques.Thisfactimpelledtherelatedareasandmetoconcentratemyresearchinterestonmaterialsscienceandprocessing.Throughcarefulsurvey,Iselectedasubjectaboutthequalitycontrolofheavydiscforgingandtookitasmyresearchsubjectformasterdegree.Afterovertowyearsofinvestigation,Ifinallymadeagreatinnovationintheforgingprocess,makingtheendproductrateincreasefrom50%to90%.Inthecourseofinvestigationandmylaterworkingaftergraduatestudy,Ialsofoundsomeproblemsthatarecommoninmechanicalindustry.Forexample,howdocracksinproductsduringhotmetalworkinggenerateand
develop?Howtoavoidcracks?Howdonon-metallicinclusionsaffectthepropertiesofmaterials?Howtocontrolthecontent,shapeanddistributionofinclusionsinfinalproducts?Solutiontotheseproblemswillimprovethequalityofmanykindsofproducts.Buttheyareoftendifficulttobesolvedbecausetheyincludeknowledgeofmanydisciplinesandrequiremanynewresearchmethods.IfeelthatwhatIhavelearnedisfarfromsufficienttotacklealltheproblems.ThusIhavedecidedtocontinuemyeducationbypursuingadoctoraldegreeinmechanicalengineeringinahighlyindustrializedcountryliketheUnitedStates.IplantocompletemydegreeobjectiveI3to5yearandhopethatIwillbeabletofurthermyknowledgeIareasincludingSolidMechanics,MaterialsScienceandProcesses,CAD/CAM,etc…Aftercompletingmygraduatestudy,Iwillreturntocontributemylearningtomycountry.Iplantoworkasaresearcherofateacherataninstituteorauniversity.范文2：
