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Relating interfacial fracture toughness to core thickness in honeycomb-core sandwich composites [electronic resource] /

by Grau, David

Abstract (Summary)
ABSTRACT: The research presented in this thesis is an effort to better understand the failure phenomenon in sandwich composites (specifically, a honeycomb core with laminated carbon/epoxy composite facesheets). A double cantilever beam experiment was designed and conducted for four different core thicknesses to determine a relationship between core thickness and interfacial fracture toughness. Relationships between fracture toughness and crack length were also explored. Finally, finite element modeling was performed to determine the effect of mode mixity on the interfacial fracture toughness of the sandwich composite. It is inferred that the increase in fracture toughness with the increase in core thickness is attributed to the change in mode mixity.
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School:University of Florida

School Location:USA - Florida

Source Type:Master's Thesis

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