robotized infrared thermography for the inspection of
TRANSCRIPT
Robotized Infrared Thermography for the inspection of composite components : Basic Theory and Applications in the European Industry
[email protected]: animations/videos can not be printed.
parPierre Servais, PhDMatthieu Klein, MSEEClemente Ibarra, PhDSt-Hubert, 11 octobre, 2018
1. Introduction to infrared thermography for NDT
2. Line Scan Thermography – LST
3. Composite Testing in the European Aircraft Manufacturing
4. Conclusions
2
Outline
Infrared (IR) radiation
3
1. Introduction: Infrared Thermography for NDT
William Herschel
IR in the Electromagnetic Spectrum
4
1. Introduction: Infrared Thermography for NDT
c = l x f
E = h x f
h = 6.6256 x 10-34 Js
Classic experimental setup for NDT: Pulsed Thermography (PT)
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1. Introduction: Infrared Thermography for NDT
Specimenbefore heating
‘Cold’ image
Classic experimental setup for NDT: Pulsed Thermography (PT)
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1. Introduction: Infrared Thermography for NDT
Specimenafter heating
PT - Thermal response
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1. Introduction: Infrared Thermography for NDT
PT Scenario
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1. Introduction: Infrared Thermography for NDT
Signal processing techniques for IRT
Thermal contrast-based techniques (max. contrast, FWHM, etc.)
Differential Absolute Contrast, DAC
Thermographic Signal Reconstruction, TSR
Principal Component Thermography, PCT
Pulsed Phase Thermography, PPT
…
9
1. Introduction: Infrared Thermography for NDT
te
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)()()( tTtTtTaSd
nn
N
k
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Data processing: Pulsed Phase Thermography (PPT)
10
1. Introduction: Infrared Thermography for NDT
Thermal ContrastMethods
Pulsed Phase Thermography
FT f = 0.31566 Hz
(a) (b) (c)
t =
1.6
283 s
f =
0.2
9336 H
z
t = 1.6283 s
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1. Introduction: Infrared Thermography for NDT
-0.045
-0.04
-0.035
-0.03
-0.025
-0.02
-0.015
-0.01
PPT
Experimental setup for LST and data acquisition / reconstruction
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2. Line Scan Thermography – LST
LST Scenario
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2. Line Scan Thermography – LST
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2. Line Scan Thermography – LST
Line-scan ECT
P. Servais, Aerospace EngineerDoctor in NDT – Level 3 PT MT ET UT RT IRT
Responsible level 3 NDT for Sonaca, Sabca, Asco, Safran China
3: Industrial Test Cases for LST at Sonaca, Belgium
High rise of composite parts NDT
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3: Industrial Test Cases for LST at Sonaca, Belgium
Sonaca Group :
2500 personnes + récemment rachat LMI (4000 personnes)
Présent en Belgique, Canada, Brésil, Chine et en Roumanie
Conçoit et produit des pièces de structures aéronautiques pour Airbus, Embraer, Bombardier, Dassault,….
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3: Industrial Test Cases for LST at Sonaca, Belgium
Bords d’attaque
Pièces métaliques
Pièce composite
Pièces composites : SLATS
3: Industrial Test Cases for LST at Sonaca, Belgium
Flaps
Longueur : +/- 8m
Pièces composites : WINGS
3: Industrial Test Cases for LST at Sonaca, Belgium
Coût : +/- 1M€ - temps d’inspection : de 15 min à 2h
Avant : contrôle par Ultrason (immersion ou contact)
Équipement NDT pour le contrôle de pièce composite : Cuve d’immersion et Robot pour le contrôle NDT
3: Industrial Test Cases for LST at Sonaca, Belgium
Recording of IR live video
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3: Industrial Test Cases for LST at Sonaca, Belgium
LST : reconstruction des données (animation)
3: Industrial Test Cases for LST at Sonaca, Belgium
LST : industrialisation
3: Industrial Test Cases for LST at Sonaca, Belgium
LST : Nid d’abeille
3: Industrial Test Cases for LST at Sonaca, Belgium
Linescan Thermo - 2 minutes Scan Ultrasonic C-scans : 30 minutes
LST : Fairing
3: Industrial Test Cases for LST at Sonaca, Belgium
Flap Fairing ( prototype ) avec défauts artificiels :
Taille : 2 m x 0.5 m x 0.3 m
Structure : peaux en carbone collées sur un nid d’abeille
Forme très étroite et courbe => contrôle est difficile avec les équipements actuels
LST : Fairing
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3: Industrial Test Cases for LST at Sonaca
Flap Fairing ( prototype ) avec défauts artificiels :
Défauts collage Nida Fairing - multiméthode
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3: Industrial Test Cases for LST at Sonaca
Digital Xray – DeReo 40cm Xris
LINESCAN IRT - Visiooimage
Flap Track Fairing
LST : Renfort
3: Industrial Test Cases for LST at Sonaca, Belgium
Pièce monolithique
• épaisseur 2 mm
• Forme complexe
• Contrôle partiel en UT en manuel
LST : Renfort
3: Industrial Test Cases for LST at Sonaca, Belgium
Porosity panels - Simulations
3: Industrial Test Cases for LST at Sonaca, Belgium
Typical IRT scan result showing 3 porous zones detectable
(from above 6dB) :
1. LST is a new NDT technique from IRT well dedicated to complex composite geometries
2. LST is very performant on honeycomb structure and thin monolithic parts
3. No problem for high curvature or non parallel surfaces
4. LST is at least 5 times quicker than Ultrasonic Testing
5. No problem of coupling, no water consumption, no water heat/pollution/filtering
6. Use of latest post processing digital filtering based on video acquisition
7. IR camera and heater have now lower cost than phased array system
Thanks to CRIAQ, SKYWIN, SONACA and WAN to open international Belgium-Canada collaboration
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4. Conclusions