Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/46647
Title: Experimental fatigue evaluation of underwater steel panels retrofitted with fiber polymers
Authors: Mahmoud, Hussam
Riveros, Guillermo A.
Hassan, Emad M.
Hudak, Lauren
Keywords: Hydraulic structures--Maintenance and repair
Service life (Engineering)
Underwater construction
Steel, Structural--Fatigue--Cracking
Carbon fiber-reinforced plastics
Publisher: Engineer Research and Development Center (U.S.)
Series/Report no.: Technical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/ITL TR-23-1
Abstract: Many steel structures are susceptible to fatigue loading and damage that potentially threaten their integrity. Steel hydraulic structures (SHS) experience fatigue loading during operation and exposure to harsh environmental conditions that can further reduce fatigue life through stress corrosion cracking and corrosion fatigue, for example. Dewatering to complete inspections or repairs to SHS is time consuming and leads to economic losses, and current repair methods, such as rewelding, often cause new cracks to form after relatively few cycles, requiring repeated inspection and repair. The use of bonded carbon fiber–reinforced polymer (CFRP) to repair fatigue cracks in metallic structures has been successful in other industries; recent work suggests that this method offers a more reliable repair method for SHS. Studies regarding CFRP retrofits of SHS indicate that early bond failure often controls the degree of fatigue life extension provided by the repair. This study aims to extend previous studies and increase the fatigue life of repaired steel components by employing methods to improve CFRP bonding. Additionally, using basalt reinforced polymer (BFRP) instead of CFRP is proposed. BFRP is attractive for SHS because it does not react galvanically and has excellent resistance to chemically active environments.
Description: Technical Report
Gov't Doc #: ERDC/ITL TR-23-1
Rights: Approved for Public Release; Distribution is Unlimited
URI: https://hdl.handle.net/11681/46647
http://dx.doi.org/10.21079/11681/46647
Appears in Collections:Technical Report

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