The response of honeycomb sandwich panels to blast loads

 

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dc.contributor.advisor Nurick, Gerald N en_ZA
dc.contributor.advisor Langdon, GS en_ZA
dc.contributor.author Chi, Yunn-Chih (Yvonne) en_ZA
dc.date.accessioned 2014-07-31T11:30:22Z
dc.date.available 2014-07-31T11:30:22Z
dc.date.issued 2008 en_ZA
dc.identifier.citation Chi, Y.(. 2008. The response of honeycomb sandwich panels to blast loads. Master Thesis. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering. http://hdl.handle.net/11427/5566 en_ZA
dc.identifier.uri http://hdl.handle.net/11427/5566
dc.description.abstract Numerous studies have been performed in search of structures providing better blast protection and to understand the various effects influencing the structural performance. This thesis reports on an investigation into the behaviour of circular sandwich panels with aluminium honeycomb cores subjected to air blast loading. It focuses on the effect of varying core thickness, plate thickness and panel configuration. In this study, aluminium honeycomb core is sandwiched between mild steel face plates. Quasi-static tensile and compression experiments are performed to characterise the face plates and the honeycombs. Four sandwich panel configurations are proposed and subjected to blast loading. The impulse is generated by detonating plastic explosives at a constant stand-off distance and measured using a ballistic pendulum. The impulse is varied by using different charge masses. It is observed that the panels experience front plate deflection and tearing; honeycomb core crushing and densification; and back plate deflection and tearing. The deformations of the face plates and the cores increased with increasing impulse. Increasing the core thickness delayed the onset of core densification and decreased back plate deflection; and increasing the plate thickness also decreased back plate deflection. The use of an extra sandwich layer helps to provide better structural support but has the penalty of extra mass. en_ZA
dc.language.iso eng
dc.title The response of honeycomb sandwich panels to blast loads en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Master Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Mechanical Engineering en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Chi, Y. (. (2008). <i>The response of honeycomb sandwich panels to blast loads</i>. (Master Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering. Retrieved from http://hdl.handle.net/11427/5566 en_ZA
dc.identifier.chicagocitation Chi, Yunn-Chih (Yvonne). <i>"The response of honeycomb sandwich panels to blast loads."</i> Master Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2008. http://hdl.handle.net/11427/5566 en_ZA
dc.identifier.vancouvercitation Chi Y(. The response of honeycomb sandwich panels to blast loads. [Master Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Mechanical Engineering, 2008 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/5566 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Chi, Yunn-Chih (Yvonne) AB - Numerous studies have been performed in search of structures providing better blast protection and to understand the various effects influencing the structural performance. This thesis reports on an investigation into the behaviour of circular sandwich panels with aluminium honeycomb cores subjected to air blast loading. It focuses on the effect of varying core thickness, plate thickness and panel configuration. In this study, aluminium honeycomb core is sandwiched between mild steel face plates. Quasi-static tensile and compression experiments are performed to characterise the face plates and the honeycombs. Four sandwich panel configurations are proposed and subjected to blast loading. The impulse is generated by detonating plastic explosives at a constant stand-off distance and measured using a ballistic pendulum. The impulse is varied by using different charge masses. It is observed that the panels experience front plate deflection and tearing; honeycomb core crushing and densification; and back plate deflection and tearing. The deformations of the face plates and the cores increased with increasing impulse. Increasing the core thickness delayed the onset of core densification and decreased back plate deflection; and increasing the plate thickness also decreased back plate deflection. The use of an extra sandwich layer helps to provide better structural support but has the penalty of extra mass. DA - 2008 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2008 T1 - The response of honeycomb sandwich panels to blast loads TI - The response of honeycomb sandwich panels to blast loads UR - http://hdl.handle.net/11427/5566 ER - en_ZA


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