Evaluation of High Pressure Components of Fuel Injection Systems Using Speckle InterferometryDerTechnischenFakultätderUniversitätErlangenNürnbergzurErlangungdesGradesDOKTOR-INGENIEUR vorgelegtvonAdis Basara Erlangen,2007 iAlsDissertationgenehmigtvonderTechnischenFakultätderUniversitätErlangenNürnbergTagderEinreichung: 19.Januar2007TagderPromotion: 22.Mai2007Dekan: Prof.Dr.Ing.AlfredLeipertzBerichterstatter: Prof.Dr.Ing.EberhardSchlücker Prof.Dr.rer.nat.HaëlMughrabiii Tomybelovedparents iii Preface Everyaccomplishmentstartswithadream.MydreamcametobetrueandpossibleatthemomentwhenIwasawardedwithafinancialsupportbytheBavarianStateMinistryofSciences,ResearchandtheArtsformyresearchwork.Inthisaspiration,the Institute for Process Technology and Machinery at the FriedrichAlexanderUniversityofErlangenNuremberginGermany,whohavehostedmeduringmyfouryears’researchstay,alsoplayedanimportantrole.DuringthisunforgettabletimeIspentattheInstitute,itbecamemysecondhomeandthestaffoftheInstitutemyenlarged family.