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Characterization of Impact Damage and Fiber Reinforced Polymer Repair Systems for Metallic Utility Poles

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Date Issued:
2013
Abstract/Description:
Previous studies have demonstrated that the behavior of ber reinforced polymers(FRPs) bonded to metallic utility poles are governed by the following failure modes; yieldingof the metallic substrate, FRP tensile rupture, FRP compressive buckling, and debonding ofFRP from the substrate. Therefore, an in situ method can be devised for the repair of utilitypoles, light poles, and mast arms that returns the poles to their original service strength.This thesis investigates the eect of damage due to vehicular impact on metallic poles,and the eectiveness of externally-bonded FRP repair systems in restoring their capacity.Damage is simulated experimentally by rapid, localized load application to pole sections,creating dents ranging in depth from 5 to 45% of the outer diameter. Four FRP compositerepair systems were selected for characterization and investigation due to their mechani-cal properties, ability to balance the system failure modes, and installation eectiveness.Bending tests are conducted on dented utility poles, both unrepaired and repaired.Nonlinear nite element models of dented and repaired pole bending behavior aredeveloped in MSC.Marc. These models show good agreement with experimental results,and can be used to predict behavior of full-scale repair system. A relationship between dentdepth and reduced pole capacity is developed, and FRP repair system recommendations arepresented.
Title: Characterization of Impact Damage and Fiber Reinforced Polymer Repair Systems for Metallic Utility Poles.
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Name(s): Johnson, Cara, Author
Mackie, Kevin, Committee Chair
Tatari, Mehmet, Committee Member
Chopra, Manoj, Committee Member
, Committee Member
University of Central Florida, Degree Grantor
Type of Resource: text
Date Issued: 2013
Publisher: University of Central Florida
Language(s): English
Abstract/Description: Previous studies have demonstrated that the behavior of ber reinforced polymers(FRPs) bonded to metallic utility poles are governed by the following failure modes; yieldingof the metallic substrate, FRP tensile rupture, FRP compressive buckling, and debonding ofFRP from the substrate. Therefore, an in situ method can be devised for the repair of utilitypoles, light poles, and mast arms that returns the poles to their original service strength.This thesis investigates the eect of damage due to vehicular impact on metallic poles,and the eectiveness of externally-bonded FRP repair systems in restoring their capacity.Damage is simulated experimentally by rapid, localized load application to pole sections,creating dents ranging in depth from 5 to 45% of the outer diameter. Four FRP compositerepair systems were selected for characterization and investigation due to their mechani-cal properties, ability to balance the system failure modes, and installation eectiveness.Bending tests are conducted on dented utility poles, both unrepaired and repaired.Nonlinear nite element models of dented and repaired pole bending behavior aredeveloped in MSC.Marc. These models show good agreement with experimental results,and can be used to predict behavior of full-scale repair system. A relationship between dentdepth and reduced pole capacity is developed, and FRP repair system recommendations arepresented.
Identifier: CFE0004697 (IID), ucf:49872 (fedora)
Note(s): 2013-05-01
M.S.
Engineering and Computer Science, Civil, Environmental and Construction Engineering
Masters
This record was generated from author submitted information.
Subject(s): fiber reinforced polymers -- utility pole -- FRP -- impact damage -- polyurethane -- repair
Persistent Link to This Record: http://purl.flvc.org/ucf/fd/CFE0004697
Restrictions on Access: public 2013-05-15
Host Institution: UCF

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