Assessment of bonding defects in FRP reinforced structures via ultrasonic technique

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Abstract

Fiber reinforced polymer (FRP) composite systems are widely used for the rehabilitationof concrete structures such as building that need to resist to seismic loads,bridges that have to carry heavier traffic loads. The technique consists in bonding thecomposite plate to the concrete surface element in order to increase the flexural capacity.A proper attachment of the FRP plate to the concrete surface is necessary forthe efficiency of the load transfer between the reinforcement and the substrate. Inthis work, the quality of composite bonding is characterized through ultrasonic testing.The proposed technique is relative to a time domain analysis of the ultrasonicsignals and couples the Akaike Information Criterion (AIC), used as automatic onsetsignal detection, and the Equivalent Time-Length (ETL), used as an indicator of thequantity of energy propagating through the bonding. It has been tested both numericallyand experimentally, in vitro, using samples with imposed well- known defects.
Lingua originaleEnglish
pagine (da-a)139-146
Numero di pagine8
RivistaCHALLENGE JOURNAL OF STRUCTURAL MECHANICS
Volume2
Stato di pubblicazionePublished - 2016

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Ultrasonics
Defects
Fibers
Polymers
Concretes
Ultrasonic testing
Time domain analysis
Concrete construction
Large scale systems
Reinforcement
Composite materials
Substrates

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title = "Assessment of bonding defects in FRP reinforced structures via ultrasonic technique",
abstract = "Fiber reinforced polymer (FRP) composite systems are widely used for the rehabilitationof concrete structures such as building that need to resist to seismic loads,bridges that have to carry heavier traffic loads. The technique consists in bonding thecomposite plate to the concrete surface element in order to increase the flexural capacity.A proper attachment of the FRP plate to the concrete surface is necessary forthe efficiency of the load transfer between the reinforcement and the substrate. Inthis work, the quality of composite bonding is characterized through ultrasonic testing.The proposed technique is relative to a time domain analysis of the ultrasonicsignals and couples the Akaike Information Criterion (AIC), used as automatic onsetsignal detection, and the Equivalent Time-Length (ETL), used as an indicator of thequantity of energy propagating through the bonding. It has been tested both numericallyand experimentally, in vitro, using samples with imposed well- known defects.",
author = "{La Malfa Ribolla}, Emma and {Rezaee Hajidehi}, Mohsen and Antonino Spada and Giuseppe Giambanco and {Fileccia Scimemi}, Giuseppe",
year = "2016",
language = "English",
volume = "2",
pages = "139--146",
journal = "CHALLENGE JOURNAL OF STRUCTURAL MECHANICS",
issn = "2149-8024",

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T1 - Assessment of bonding defects in FRP reinforced structures via ultrasonic technique

AU - La Malfa Ribolla, Emma

AU - Rezaee Hajidehi, Mohsen

AU - Spada, Antonino

AU - Giambanco, Giuseppe

AU - Fileccia Scimemi, Giuseppe

PY - 2016

Y1 - 2016

N2 - Fiber reinforced polymer (FRP) composite systems are widely used for the rehabilitationof concrete structures such as building that need to resist to seismic loads,bridges that have to carry heavier traffic loads. The technique consists in bonding thecomposite plate to the concrete surface element in order to increase the flexural capacity.A proper attachment of the FRP plate to the concrete surface is necessary forthe efficiency of the load transfer between the reinforcement and the substrate. Inthis work, the quality of composite bonding is characterized through ultrasonic testing.The proposed technique is relative to a time domain analysis of the ultrasonicsignals and couples the Akaike Information Criterion (AIC), used as automatic onsetsignal detection, and the Equivalent Time-Length (ETL), used as an indicator of thequantity of energy propagating through the bonding. It has been tested both numericallyand experimentally, in vitro, using samples with imposed well- known defects.

AB - Fiber reinforced polymer (FRP) composite systems are widely used for the rehabilitationof concrete structures such as building that need to resist to seismic loads,bridges that have to carry heavier traffic loads. The technique consists in bonding thecomposite plate to the concrete surface element in order to increase the flexural capacity.A proper attachment of the FRP plate to the concrete surface is necessary forthe efficiency of the load transfer between the reinforcement and the substrate. Inthis work, the quality of composite bonding is characterized through ultrasonic testing.The proposed technique is relative to a time domain analysis of the ultrasonicsignals and couples the Akaike Information Criterion (AIC), used as automatic onsetsignal detection, and the Equivalent Time-Length (ETL), used as an indicator of thequantity of energy propagating through the bonding. It has been tested both numericallyand experimentally, in vitro, using samples with imposed well- known defects.

UR - http://hdl.handle.net/10447/260232

UR - http://dx.doi.org/10.20528/cjsmec.2016.08.018

M3 - Article

VL - 2

SP - 139

EP - 146

JO - CHALLENGE JOURNAL OF STRUCTURAL MECHANICS

JF - CHALLENGE JOURNAL OF STRUCTURAL MECHANICS

SN - 2149-8024

ER -