{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/14631"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/14631","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Superelastic shape memory alloy composite bars for reinforcing concrete structures","abstract":"Superelastic shape memory alloys (SMAs) are a class of metallic alloys that have the unique property of being able to undergo large amounts of plastic strain while remaining elastic and dissipating energy. This thesis explored a strategy for adding ductility and energy dissipation to FRP reinforcing bars through the use of SMA-fiber reinforced polymer (SMA-FRP) composites, an innovative type of composite that consists of a polymer matrix reinforced with small diameter superelastic SMA wires with and without additional conventional fiber reinforcement. In this study an analytical model for the behavior of SMA-FRPs was developed based on experimental results. This model was then used in a parametric study to determine the effect of the composition of the composite on its performance. After which, the SMA-FRP bars were explored as reinforcement for concrete structures with analyses at the section, substructure, and structural levels. From this study it was found that SMA-FRP reinforcing bars behave in a ductile manner and are capable of dissipating energy. Furthermore, it was found that SMA-FRP bars have more potential to improve the ductility and energy dissipation capability of concrete structures compared to conventional FRP bars.","abstract_html":"Superelastic shape memory alloys (SMAs) are a class of metallic alloys that have the unique property of being able to undergo large amounts of plastic strain while remaining elastic and dissipating energy. This thesis explored a strategy for adding ductility and energy dissipation to FRP reinforcing bars through the use of SMA-fiber reinforced polymer (SMA-FRP) composites, an innovative type of composite that consists of a polymer matrix reinforced with small diameter superelastic SMA wires with and without additional conventional fiber reinforcement. In this study an analytical model for the behavior of SMA-FRPs was developed based on experimental results. This model was then used in a parametric study to determine the effect of the composition of the composite on its performance. After which, the SMA-FRP bars were explored as reinforcement for concrete structures with analyses at the section, substructure, and structural levels. From this study it was found that SMA-FRP reinforcing bars behave in a ductile manner and are capable of dissipating energy. Furthermore, it was found that SMA-FRP bars have more potential to improve the ductility and energy dissipation capability of concrete structures compared to conventional FRP bars.","abstract_has_math":false,"creators":["Wierschem, Nicholas E."],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Civil Engineering","degree_department":null,"school":null,"contributors":["Andrawes, Bassem"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2010,"date_issued":"2010-01-06T16:20:08Z","date_published":"2010-01-06T16:20:08Z","updated_at":"2026-07-22T22:25:07Z","subjects":["reinforced concrete","shape memory alloy","Superelastic Shape Memory Alloys (SMA)","Fiber Reinforced Polymer (FRP)","ductility","energy dissipation"],"languages":["en"],"rights":["Copyright 2009 Nicholas E. 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This model was then used in a parametric study to determine the effect of the composition of the composite on its performance. After which, the SMA-FRP bars were explored as reinforcement for concrete structures with analyses at the section, substructure, and structural levels. From this study it was found that SMA-FRP reinforcing bars behave in a ductile manner and are capable of dissipating energy. Furthermore, it was found that SMA-FRP bars have more potential to improve the ductility and energy dissipation capability of concrete structures compared to conventional FRP bars.","Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2009-12-10T20:51:00Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 1 Wierschem_Master_Thesis_Final.pdf: 3522106 bytes, checksum: 335434d644c3a17944f85f4ecd46fccb (MD5)","Made available in DSpace on 2010-01-06T16:20:08Z (GMT). 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