{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/87706"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/87706","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Effects of Surface Microstructure on the Strength of Adhesively Bonded Structures","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.\"","abstract_html":""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."","abstract_has_math":false,"creators":["Zhang, Sulin"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Theoretical and Applied Mechanics","degree_department":null,"school":null,"contributors":["Hsia, K. Jimmy"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-28T16:23:34Z","date_published":"2015-09-28T16:23:34Z","updated_at":"2026-07-22T22:26:30Z","subjects":["Engineering, Materials Science"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3044272"],"render_values":[{"text":"(MiAaPQ)AAI3044272","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/87706","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Hsia, K. 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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.\"","Made available in DSpace on 2015-09-28T16:23:34Z (GMT). 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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.\"","Made available in DSpace on 2015-09-28T16:23:34Z (GMT). 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