Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/3470
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dc.contributor.advisorTaşdemirci, Alperen
dc.contributor.authorTuran, Ali Kıvanç-
dc.date.accessioned2014-07-22T13:51:36Z-
dc.date.available2014-07-22T13:51:36Z-
dc.date.issued2012en
dc.identifier.urihttp://hdl.handle.net/11147/3470-
dc.descriptionThesis (Master)--Izmir Institute of Technology, Mechanical Engineering, Izmir, 2012en
dc.descriptionIncludes bibliographical references (leaves: 50-52)en
dc.descriptionText in English; Abstract: Turkish and Englishen
dc.descriptionx, 52 leavesen
dc.description.abstractGoreTM PolarchipTM heat insulating Teflon and Dow ChemicalsTM Voracor CS Polyurethane were characterized in this study by conducting compression tests at various strain rates. Quasi-static compression tests were done with a Shimadzu AG-X conventional test machine while two different modified Split Hopkinson Pressure Bar (SHPB) systems were used for dynamic compression tests. Since dynamic testing of soft materials with classical SHPB is problematic due to low signal levels and relatively higher signal to noise ratio, impact end of transmitter bar was modified with insertion of piezoelectric force transducers through the SHPB tests of Teflon, thus enabling the direct measurement of force on specimen. High strain tests of Polyurethane involved oscillations in both incident and transmitter bar signals. To overcome this, EPDM rubber pulse shaper was used through the SHPB tests of Polyurethane. Experimental results were used in numerical study as material model parameters and SHPB tests of both materials were simulated in LS-DYNA. Experimental study concluded strong strain rate dependency in both Teflon and Polyurethane, depicting an increase in maximum stress with the increase in strain rate. Numerical study showed a good correlation with experiments in terms of bar stresses and damage behavior of specimens, offering a solution to more complex problems that can be encountered in future studies.en
dc.language.isoenen_US
dc.publisherIzmir Institute of Technologyen
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject.lcshFinite element methoden
dc.subject.lcshStrength of materialsen
dc.subject.lcshQuartz crystalsen
dc.subject.lcshPolyurethanesen
dc.titleDynamic force measurement techniques Split Hopkinson Pressure Bar testing of low acoustic impedance materials used as armor interlayer materialsen_US
dc.typeMaster Thesisen_US
dc.institutionauthorTuran, Ali Kıvanç-
dc.departmentIzmir Institute of Technology. Mechanical Engineeringen
dc.relation.publicationcategoryTezen_US
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeMaster Thesis-
item.grantfulltextopen-
item.fulltextWith Fulltext-
item.cerifentitytypePublications-
item.languageiso639-1en-
Appears in Collections:Master Degree / Yüksek Lisans Tezleri
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