Ballistic and dynamic mechanical characterisation of 5t prototype cast of a new locally developed armour steel alloy.

dc.contributor.advisorStumpf, Waldo E.
dc.contributor.emailjacques@structakonsult.co.zaen_ZA
dc.contributor.postgraduateBester, Jacques
dc.date.accessioned2018-02-22T10:12:35Z
dc.date.available2018-02-22T10:12:35Z
dc.date.created2018-04-19
dc.date.issued2017
dc.descriptionThesis (MEng)--University of Pretoria, 2017.en_ZA
dc.description.abstractThe ballistic performance was investigated with rigorous testing of the new armor steel alloy, a tempered variant and a benchmark material. Mechanical testing included Hopkinson pressure bar tests, high temperature, notched tests and standard quasi-static tensile tests. The combination of a commercial prototype cast steel and ballistic testing with NATO standard soft projectiles allowed a uniquely practical perspective when comparing results. The ballistic test procedure reported the same minimum thickness values, for STANAG level 1 kinetic energy threats, than the suggested values of the manufacturer and comparison to the new alloy was thus established. Dynamic material characterization is only accurate within the testing range. Using a single material model to predict critical strength and failure over large strain-rate and temperature ranges is only possible if the material response is consistent. A few scaling problems during specimen testing resulted in a challenging data set with subsequent numerical characterization difficulty. Ballistic performance was however found to correlate well with high strain-rate tensile tests.en_ZA
dc.description.availabilityUnrestricteden_ZA
dc.description.degreeMEngen_ZA
dc.description.departmentMaterials Science and Metallurgical Engineeringen_ZA
dc.identifier.citationBester, J 2017, Ballistic and dynamic mechanical characterisation of 5t prototype cast of a new locally developed armour steel alloy., MEng Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/64044>en_ZA
dc.identifier.urihttp://hdl.handle.net/2263/64044
dc.language.isoenen_ZA
dc.publisherUniversity of Pretoria
dc.rights© 2018 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.
dc.subjectBallistic testingen_ZA
dc.subjectUCTD
dc.titleBallistic and dynamic mechanical characterisation of 5t prototype cast of a new locally developed armour steel alloy.en_ZA
dc.typeThesisen_ZA

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