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Active Thermography Imaging - an Innovative Approach for
NDT Inspection
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Opgal: Leader in Thermal Imaging
Defense
Industrial
Aviation
Security & Safety Mobile
Non Destructive Tests
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30 Years of Infrared Imaging Technology Innovation
Gas detection
Aircraft
Defense
Security& Safety
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The Principles of Thermographic NDT
• An active approach, where an energy source induces a temperature gradient to the environment, to be examined by a specially tuned IR thermal camera.
• Opgal NDTherm includes:
Patent pending technologies
Dedicated energy sources
Unique sensors
Proprietary algorithms
Powerful analytics
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Active thermography -Principle
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Active thermography -Principle
Reflection Transmission
heating
T°
timeheating
T°
time
Without defect
With defect
(isolation)
Picture of part First image T=2sec T=3sec
T=5sec T=7sec T=9sec T=10sec
Shallow
Deep
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Opgal NDTherm™ Key Benefits
Contactless: No physical contact between the sensor and the inspected object is needed
Safe: Minor temperature differences suffice.
Fast: Imaging technology allows for a global
and instant inspection.
Easy : No special setup or calibration needed.
Single side access: Application dependent.
Cost effective: Compared to competing NDT technologies.
Flexible: Production line or portable in the field.Manual or fully automated configurations.
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Typical NDT Usage for Aircraft Mainframe
Delamination Voids Skin to Core Disbond Impact Damage Adhesive Bonding Paint Adhesion Corrosion Moisture Ingress Porosity Wall Thickness Wall Thinning Contaminations
Spot Weld Inspection Paint Thickness Coating Thickness Crack Detection Fiber Orientation Thermal Diffusivity
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NDT Methods of CFRP Testing
NDT of
CFRPS
tate
of
cu
re
Po
ros
ity
Mo
istu
re
Fib
re o
rie
nta
tio
n
Fib
re d
eb
on
din
g
De
lam
ina
tio
n
Cra
ck
ing
Glo
ba
l in
sp
ec
tio
n
Pro
of
tes
ts
Str
ain
me
as
ure
me
nt
Radiography
White light
Coherent light
Thermography
Microwave
Eddy Current
Dielectric
Electric
Spectroscopy
Ultrasonics
Acoustic Emission
Vibration
Establishedtechnique
Potentialtechnique
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Comparison of main NDT Methods for composite structures
Thermo-graphy
Eddy Current
X-RayUltra-sonic
Method
+++++Resolution
--+++-Depth penetration
++---+Depth measurements
+++----Ease of operation
++-+Portability
+++----+Safety limitations
+++-+Time to result
+-+++-Geometry sensitive
+---++Material sensitive
+++----Capital cost
++++--Running cost
++---++Automation
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5.5mm CFRP laminate (Reflection)
Front side Back side
Active thermography image
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NDTherm can detect
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NDTherm standard Product line
Automated Portable
Fixed
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NDTherm NT / NDTherm LF
One man portable (<9Kg)
No special setup required
Fast Go – No Go inspection
Predetermined setups configuration
Utilizes “Reflection” mode testing
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NDTherm FX
Utilizes “Reflection” and “Transmission” modes testing
Flexible configuration to handle different parts and shapes
Predetermined setups configuration
Enhanced reporting tools
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NDTherm AU
Robotic manipulator
Flexible configuration
Implementing Active thermography “reflection approach”
Cage for safety provisions
Multiple predetermined setups for various parts inspection
heater
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Sample testing
Review of test results preformed on various materials and structures:
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NDT : Thermographic Vs. Ultrasonic
Thermographic Ultrasonic
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Adhesive to Core Disbond Detection
Visible
Rohacell Honeycomb
NDTherm NDThermVisible
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Laminate Defects Detection
Test plate
Fiber Glass
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CFRP laminate tube defects detection
*Sample courtesy of Kanfit
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CFRP Impact damage
Second Der.Second Der.
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Testing of “Boeing 32-44 Layer H shape CFRP calibration sample”
• 100% detection Demonstrated
• “Reflection setup” was proved to achieve full detection
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Boeing CFRP wrinkles sample
CorrelationsPulsed phase
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CFRP 2mm thick. pipe inspection
Pulsed PhasePulsed PhaseSecond Der.
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Published article in cooperation with IAI
A NDT Study of Complex CFRP/GFRP Structure by Means of Active Thermography Jorge M. Poplawski* (*) Opgal Optronic Systems, Karmiel, Israel
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Corrosion detection of Metal / CFRP structure
Second Der.Part
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Delamination Dection on Rohacell/ CFRP structure (Derivative method)
Delaminations
Inner structure
Inserts
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Under paint corrosion
Part imageReconstructed
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3.0-4.2mm CFRP debonding on aluminum
Test Sample Inspected Debonding(Marked dark)
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1.2mm metal – debonding inspection
Test Sample
Inspected Debonding(Marked dark)
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Spot welding inspection
1.1mm
1.4mm
No weld
Stick weld
Burnt spot
No weld
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NDTherm™ – Your NDT Solution
• Contact information:
Mr. Yaron Segev Director Business DevelopmentTel: +972 4 995 3956
Mobile: +972 54 602 9822Email: [email protected]
www.ndtherm.com