Square Heating Applied to Shearography and Active Infrared Thermography Measurements Coupling: From Feasibility Test in Laboratory to Numerical Study of Pultruded CFRP Plates Glued on Concrete Specimen

Square Heating Applied to Shearography and Active Infrared Thermography Measurements Coupling: From Feasibility Test in Laboratory to Numerical Study of Pultruded CFRP Plates Glued on Concrete Specimen

ABSTRACT This paper investigates thermography and shearography couplings, using feasibility trials and numerical simulations, for non‐destructive control evaluations of bonding of carbon fiber‐reinforced polymer plates glued over concrete structures. Those are well‐known methods in non‐destructive t...

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Bibliographic Details
Published in:Strain Vol. 50; no. 5; pp. 404 - 416
Main Authors: Théroux, L.-D., Dumoulin, J., Maladague, X.
Format: Journal Article
Language:English
Published: Chichester Blackwell Publishing Ltd 01-10-2014
Wiley Subscription Services, Inc
Wiley-Blackwell
Subjects:
adhesive bond
Carbon fiber reinforced plastics
Computer simulation
concrete structure
Engineering Sciences
Excitation
Feasibility
finite element method
FRP
Heating
infrared thermography
Materials
Mathematical models
non-destructive testing (NDT)
Nondestructive testing
shearogprahy
thermal stress
Thermography
ADHESION
ESSAI NON DESTRUCTIF
METHODE DES ELEMENTS FINIS
ADHERENCE
CHAUSSEE (CORPS DE)
THERMOGRAPHIE INFRAROUGE
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Summary:ABSTRACT This paper investigates thermography and shearography couplings, using feasibility trials and numerical simulations, for non‐destructive control evaluations of bonding of carbon fiber‐reinforced polymer plates glued over concrete structures. Those are well‐known methods in non‐destructive testing (NDT) applied to civil engineering, but in this context, they are seen as paired because they use the same excitation source: square‐pulsed optical heating. Furthermore, because both methods are based on different properties, the detection of defects is optimised regardless of its nature or type. The combination of the methods allows the measurement of a thermal as well as a thermomechanical response from the structure at the same time. A quick review of those methods and their respective advantage and inconvenient is mentioned. An in‐depth study of the interpretation of the thermal and mechanical responses is carried out in relation to the thermal excitation. Then, the thought process behind the conception of the finite element model and its limitation is discussed. The experimental setup, used for feasibility testing, is described as well as a thorough analysis of the experimental and simulated results. Finally, the pairing of both methods is discussed regarding the evaluation of the bond quality, as well as the similitude of the sample and its numerical model.
Bibliography:ark:/67375/WNG-TJDJBQLD-5
istex:45834CAEC9473A1221CE245694CF108BA3AD7456
ArticleID:STR12086
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0039-2103
1475-1305
DOI:10.1111/str.12086