Ultrasonic inspection for the detection of debonding in CFRP-reinforced concrete

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10 Citations (Scopus)

Abstract

Fibre-reinforced plastic (FRP) composites are extensively used to retrofit civil structures. However, the quality and the characteristics of the bond between the FRP and the structure are critical to ensure the efficacy of the retrofit. For this reason, effective non-destructive evaluation (NDE) methods are often necessary to assess the bonding conditions. This article presents an ultrasonic technique for detecting defects at the FRP-substrate interface. The technique uses the Akaike Information Criterion, to detect automatically the onset of the ultrasonic signals, and the novel Equivalent Time Lenght (ETL) parameter, to quantify the energy of the propagating ultrasonic signals along the interface between FRP and concrete. The uniqueness of the ETL is that it is not affected by the coupling conditions between the ultrasonic probes and the structure. The proposed NDE technique has been tested numerically by performing 2D Finite-Element analysis and experimentally on reinforced concrete samples. The results show that the method is robust and cost-effective.
Original languageEnglish
Pages (from-to)807-816
Number of pages10
JournalStructure and Infrastructure Engineering
Volume14
Publication statusPublished - 2017

Fingerprint

Fiber reinforced plastics
Carbon fiber reinforced plastics
Debonding
reinforced concrete
Reinforced concrete
Inspection
Ultrasonics
plastic
Akaike information criterion
probe
substrate
inspection
detection
fibre
Composite materials
Substrates
cost
energy
Costs

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Mechanical Engineering
  • Ocean Engineering
  • Geotechnical Engineering and Engineering Geology
  • Safety, Risk, Reliability and Quality
  • Building and Construction

Cite this

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title = "Ultrasonic inspection for the detection of debonding in CFRP-reinforced concrete",
abstract = "Fibre-reinforced plastic (FRP) composites are extensively used to retrofit civil structures. However, the quality and the characteristics of the bond between the FRP and the structure are critical to ensure the efficacy of the retrofit. For this reason, effective non-destructive evaluation (NDE) methods are often necessary to assess the bonding conditions. This article presents an ultrasonic technique for detecting defects at the FRP-substrate interface. The technique uses the Akaike Information Criterion, to detect automatically the onset of the ultrasonic signals, and the novel Equivalent Time Lenght (ETL) parameter, to quantify the energy of the propagating ultrasonic signals along the interface between FRP and concrete. The uniqueness of the ETL is that it is not affected by the coupling conditions between the ultrasonic probes and the structure. The proposed NDE technique has been tested numerically by performing 2D Finite-Element analysis and experimentally on reinforced concrete samples. The results show that the method is robust and cost-effective.",
author = "Giuseppe Giambanco and {Fileccia Scimemi}, Giuseppe and Antonino Spada and {La Malfa Ribolla}, Emma and Piervincenzo Rizzo and {Rezaee Hajidehi}, Mohsen and Piervincenzo Rizzo",
year = "2017",
language = "English",
volume = "14",
pages = "807--816",
journal = "Structure and Infrastructure Engineering",
issn = "1573-2479",
publisher = "Taylor and Francis Ltd.",

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TY - JOUR

T1 - Ultrasonic inspection for the detection of debonding in CFRP-reinforced concrete

AU - Giambanco, Giuseppe

AU - Fileccia Scimemi, Giuseppe

AU - Spada, Antonino

AU - La Malfa Ribolla, Emma

AU - Rizzo, Piervincenzo

AU - Rezaee Hajidehi, Mohsen

AU - Rizzo, Piervincenzo

PY - 2017

Y1 - 2017

N2 - Fibre-reinforced plastic (FRP) composites are extensively used to retrofit civil structures. However, the quality and the characteristics of the bond between the FRP and the structure are critical to ensure the efficacy of the retrofit. For this reason, effective non-destructive evaluation (NDE) methods are often necessary to assess the bonding conditions. This article presents an ultrasonic technique for detecting defects at the FRP-substrate interface. The technique uses the Akaike Information Criterion, to detect automatically the onset of the ultrasonic signals, and the novel Equivalent Time Lenght (ETL) parameter, to quantify the energy of the propagating ultrasonic signals along the interface between FRP and concrete. The uniqueness of the ETL is that it is not affected by the coupling conditions between the ultrasonic probes and the structure. The proposed NDE technique has been tested numerically by performing 2D Finite-Element analysis and experimentally on reinforced concrete samples. The results show that the method is robust and cost-effective.

AB - Fibre-reinforced plastic (FRP) composites are extensively used to retrofit civil structures. However, the quality and the characteristics of the bond between the FRP and the structure are critical to ensure the efficacy of the retrofit. For this reason, effective non-destructive evaluation (NDE) methods are often necessary to assess the bonding conditions. This article presents an ultrasonic technique for detecting defects at the FRP-substrate interface. The technique uses the Akaike Information Criterion, to detect automatically the onset of the ultrasonic signals, and the novel Equivalent Time Lenght (ETL) parameter, to quantify the energy of the propagating ultrasonic signals along the interface between FRP and concrete. The uniqueness of the ETL is that it is not affected by the coupling conditions between the ultrasonic probes and the structure. The proposed NDE technique has been tested numerically by performing 2D Finite-Element analysis and experimentally on reinforced concrete samples. The results show that the method is robust and cost-effective.

UR - http://hdl.handle.net/10447/259344

UR - https://doi.org/10.1080/15732479.2017.1384843

M3 - Article

VL - 14

SP - 807

EP - 816

JO - Structure and Infrastructure Engineering

JF - Structure and Infrastructure Engineering

SN - 1573-2479

ER -