Evaluation of gluing of CFRP onto concrete structures by infrared thermography coupled with thermal impedance

Chauchois Alexis; Brachelet Franck; Defer Didier; Antczak Emmanuel; Choi Hangseok

doi:10.1016/j.compositesb.2014.10.002

Evaluation of gluing of CFRP onto concrete structures by infrared thermography coupled with thermal impedance

Chauchois Alexis, Brachelet Franck, Defer Didier, Antczak Emmanuel, Choi Hangseok

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Carbon Fiber Reinforced Polymers (CFRPs) have been increasingly employed for structural strengthening, and are attached to structures using bonding adhesives. The aim of this work is to characterize defects in the bond between CFRP and concrete (after they are located by pulse infrared thermography), and assign the defects a "numerical value" (ranging from 0 for a complete air-gap to 1 for a fully glued bond). Quantitative characterization is performed by measuring the thermal impedance, and then identifying the thermophysical parameters of the system through fitting the measured impedance to a theoretical model. An inversion procedure is carried out to estimate the unknown parameters, without prior knowledge of sample properties. In particular, it is possible to estimate more accurately both the amount of glue within a defect and the thermal contact resistance.

Original language	English
Pages (from-to)	350-358
Number of pages	9
Journal	Composites Part B: Engineering
Volume	69
DOIs	https://doi.org/10.1016/j.compositesb.2014.10.002
Publication status	Published - 2015 Feb

Keywords

B. Debonding
B. Defects
D. Non-destructive testing
D. Thermal analysis

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.compositesb.2014.10.002

Cite this

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title = "Evaluation of gluing of CFRP onto concrete structures by infrared thermography coupled with thermal impedance",

abstract = "Carbon Fiber Reinforced Polymers (CFRPs) have been increasingly employed for structural strengthening, and are attached to structures using bonding adhesives. The aim of this work is to characterize defects in the bond between CFRP and concrete (after they are located by pulse infrared thermography), and assign the defects a {"}numerical value{"} (ranging from 0 for a complete air-gap to 1 for a fully glued bond). Quantitative characterization is performed by measuring the thermal impedance, and then identifying the thermophysical parameters of the system through fitting the measured impedance to a theoretical model. An inversion procedure is carried out to estimate the unknown parameters, without prior knowledge of sample properties. In particular, it is possible to estimate more accurately both the amount of glue within a defect and the thermal contact resistance.",

keywords = "B. Debonding, B. Defects, D. Non-destructive testing, D. Thermal analysis",

author = "Chauchois Alexis and Brachelet Franck and Defer Didier and Antczak Emmanuel and Choi Hangseok",

note = "Funding Information: The writers appreciate the financial support partially by National Research Foundation of Korea Government (NRF-2014R1A2A2A01007883). Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd. All rights reserved.",

year = "2015",

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doi = "10.1016/j.compositesb.2014.10.002",

language = "English",

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journal = "Composites Part B: Engineering",

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T1 - Evaluation of gluing of CFRP onto concrete structures by infrared thermography coupled with thermal impedance

AU - Alexis, Chauchois

AU - Franck, Brachelet

AU - Didier, Defer

AU - Emmanuel, Antczak

AU - Hangseok, Choi

N1 - Funding Information: The writers appreciate the financial support partially by National Research Foundation of Korea Government (NRF-2014R1A2A2A01007883). Publisher Copyright: © 2014 Elsevier Ltd. All rights reserved.

PY - 2015/2

Y1 - 2015/2

N2 - Carbon Fiber Reinforced Polymers (CFRPs) have been increasingly employed for structural strengthening, and are attached to structures using bonding adhesives. The aim of this work is to characterize defects in the bond between CFRP and concrete (after they are located by pulse infrared thermography), and assign the defects a "numerical value" (ranging from 0 for a complete air-gap to 1 for a fully glued bond). Quantitative characterization is performed by measuring the thermal impedance, and then identifying the thermophysical parameters of the system through fitting the measured impedance to a theoretical model. An inversion procedure is carried out to estimate the unknown parameters, without prior knowledge of sample properties. In particular, it is possible to estimate more accurately both the amount of glue within a defect and the thermal contact resistance.

AB - Carbon Fiber Reinforced Polymers (CFRPs) have been increasingly employed for structural strengthening, and are attached to structures using bonding adhesives. The aim of this work is to characterize defects in the bond between CFRP and concrete (after they are located by pulse infrared thermography), and assign the defects a "numerical value" (ranging from 0 for a complete air-gap to 1 for a fully glued bond). Quantitative characterization is performed by measuring the thermal impedance, and then identifying the thermophysical parameters of the system through fitting the measured impedance to a theoretical model. An inversion procedure is carried out to estimate the unknown parameters, without prior knowledge of sample properties. In particular, it is possible to estimate more accurately both the amount of glue within a defect and the thermal contact resistance.

KW - B. Debonding

KW - B. Defects

KW - D. Non-destructive testing

KW - D. Thermal analysis

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U2 - 10.1016/j.compositesb.2014.10.002

DO - 10.1016/j.compositesb.2014.10.002

M3 - Article

AN - SCOPUS:84949127373

SN - 1359-8368

VL - 69

SP - 350

EP - 358

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

ER -

Evaluation of gluing of CFRP onto concrete structures by infrared thermography coupled with thermal impedance

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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