The response of honeycomb sandwich panels to blast loads

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dc.contributor.advisorNurick, Gerald Nen_ZA
dc.contributor.advisorLangdon, GSen_ZA
dc.contributor.authorChi, Yunn-Chih (Yvonne)en_ZA
dc.date.accessioned2014-07-31T11:30:22Z
dc.date.available2014-07-31T11:30:22Z
dc.date.issued2008en_ZA
dc.description.abstractNumerous 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.identifier.apacitationChi, 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/11427/5566en_ZA
dc.identifier.chicagocitationChi, 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/11427/5566en_ZA
dc.identifier.citationChi, 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/11427/5566en_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
dc.identifier.urihttp://hdl.handle.net/11427/5566
dc.identifier.vancouvercitationChi 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/11427/5566en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Mechanical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.titleThe response of honeycomb sandwich panels to blast loadsen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMSc
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceMaster Thesisen_ZA
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