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dc.contributor.advisorHixson, Robert
dc.contributor.authorGarner, Jonathan R.
dc.date.accessioned2012-03-14T17:46:25Z
dc.date.available2012-03-14T17:46:25Z
dc.date.issued2011-06
dc.identifier.urihttp://hdl.handle.net/10945/5696
dc.description.abstractDyneema HB-25 is an orthotropic polyethylene fiber-epoxy matrix material that is being investigated for use in a next generation layered armor concept. Dyneema was chosen due to its high variation in sound speeds in the through direction and along the fiber direction, thereby making it a good candidate for a wave spreading layer in our proposed armored layer concept. The shock properties in the through fiber direction have been investigated using traditional window experiments and experiments using buffer materials at projectile velocities varying from 0.250 km/s to 1.800 km/s. The shock Hugoniot relationship was found to be non-linear in the low pressure regime that was investigated here and was found to be: 2 Us 1.673u p 4.847u p 0.902 . The shock properties of polycrystalline Molybdenum were also investigated; specifically the sound speed at shock state stress level. The relationship between sound speed and stress can be useful in predicting phase changes within materials. The low pressure regime of these properties was investigated in order to provide anchor data for previous work completed on Molybdenum.en_US
dc.description.urihttp://archive.org/details/dynamicmaterialp109455696
dc.format.extentxviii, 111 p. : col. ill. ;en_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshPhysicsen_US
dc.titleDynamic material properties of orthotropic polymer and molybdenum for use in next generation composite armor concepten_US
dc.typeThesisen_US
dc.contributor.secondreaderSinibaldi, Jose
dc.contributor.corporateNaval Postgraduate School (U.S.).
dc.contributor.departmentPhysics
dc.identifier.oclc743235188
etd.thesisdegree.nameM.S.en_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineApplied Physicsen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.verifiednoen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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