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Title:Effects of Surface Microstructure on the Strength of Adhesively Bonded Structures
Author(s):Zhang, Sulin
Doctoral Committee Chair(s):Hsia, K. Jimmy
Department / Program:Theoretical and Applied Mechanics
Discipline:Theoretical and Applied Mechanics
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Materials Science
Abstract:The experimental investigation in the present research is focused on the influence of surface roughness on the fracture resistance of an aluminum-epoxy interface. A layered double cantilever beam (LDCB) specimen was chosen for this experiment. The LDCB specimen was debonded by peeling off the epoxy layer from the aluminum substrate using a steel wedge. Interfacial fracture energy was extracted from the debond length by developing a closed-form solution for the specimen geometry based on a "beam on an elastic foundation" model. The experimental observations established a direct relationship between the surface roughness of aluminum substrates and the fracture resistance of the aluminum-epoxy interface. This relationship provides guidance to tailor optimal surface pretreatments of aluminum substrate to improve interfacial adhesion performance.
Issue Date:2002
Description:121 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2002.
Other Identifier(s):(MiAaPQ)AAI3044272
Date Available in IDEALS:2015-09-28
Date Deposited:2002

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