new inspection methods at sabca limburg - ndtndt.aero/images/docs/5sabcareynaert.pdf · new...
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New inspection methods at SABCA Limburg
(29/10/2012)
1Inspection methods at Sabca Limburg
(29/10/2012)
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Sabca Limburg NV
• SABCA LIMBURG has a 12.000 sqm purpose built facility for the manufacturing of
high performance aerospace components from composite materials.
Clean room 2
Curing
Trimming
Inspection methods at Sabca Limburg
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Clean room 1
Clean room 2
Inspection
… based on prereg with thermoset resins
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• CNC 5-axis machine center
• Paint shop
• Pogo flexible tooling system
Trimming area
• Autoclaves (#3)
Curing area
Clean rooms (#2)
Equipments
Inspection methods at Sabca Limburg
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• Automatic US Phased array (C-scan)
• Automatic US squirter (C-scan)
• Handheld equipments (A-scan)
Inspection area• CNC contour automatic tape
layers (#2)
• CNC ply cutter
• Hot forming equipment
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Programs
Inspection methods at Sabca Limburg
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Main products overview and technology used
Honeycomb (Flap track fairings A340, A350)Co bonded stringers (Ribs A320)
Hot
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Integrated stringers (Flac covers A400M) Co cured stringers (HTP Flacon 900/200, SMS, G650)
Hot
formed
spars
(G650)
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Ultrasonic inspection equipments (today)
• Automatic ultrasonic C-scan squirterequipment on towers (2 axes)
• Automatic ultrasonic C-scan phased array equipment – immersion system (3 axes).
• Handheld equipments• Handheld equipments
– Ultrasonic A-scan equipments
(GE USM 35X)
– Ultrasonic phased array equipment
(Olympus Omniscan)
– Ultrasonic thickness measurement equipment
(GE CL5)
Inspection methods at Sabca Limburg
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New technologies investigated (tomorrow)
• Automatic ultrasonic C-scan phased array
pulse echo equipment on robot(s)
• Automatic ultrasonic true transmission • Automatic ultrasonic true transmission
squirter system mounted on 2 robots.
• Thermography system mounted on robot.
Inspection methods at Sabca Limburg
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Honeycomb structures
Today Tomorrow
OR
Hammer tap
US Squirter Thermography
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OR OR
(FTF A350) (FTF A350)
Manual thick. meas. US Omniscan
US Omniscan US Squirter Thermography
Manual thick. meas.
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Thermography system
• Non-destructive technique allowing the inspection
of materials in a noncontact manner through the
use of an infrared (IR) camera.
• The difference in thermal properties between the
specimen material and the eventual surface or
internal defects is large enough to be detected
with an IR camera.
• In order to increase the contrast between
defective and non-defective zones, an external t1
Inspection methods at Sabca Limburg
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defective and non-defective zones, an external
thermal stimulation is used.
• The specimen is thermally stimulated in reflection
mode (in this case).
• A dynamic inspection, where the heat source and
the IR camera move along the specimen is
considered.
t1
t2
Reconstructed thermogram
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Thermography system mounted on robot
• Requirements:
– Criteria defects: Class VI: 1500 mm²
– Indication of 10 x 10 mm²
• Today
– Tap test:
• ~2 … 3 cm² /sec
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• Tomorrow
– Thermography system:
• Linear IR lamp at 5 cm of the surface
• IR camera with gold reflector
• Assembled 3D or 2D image of the inspected part
• ~15 … 20 cm² /sec
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Integrated stringers and co-cured stringers
Today Tomorrow
US A-scan
US thick. meas.
US immersion
US thick. meas.
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US A-scan
US thick. meas.
US thick. meas.
US C-scanAutomatic US phased array PE
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Phased array pulse echo ultrasonic inspection system
mounted on robot
• Manipulator: robot moving along an X Axis.
• End Effectors
– Skin module and probes, for local immersion pulse-
echo inspections , including one or two phased array
probes
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– Stiffeners module, for local immersion pulse-echo
inspections including phased array probes specific
to the shape of the stringers
• Ultrasonic Data Acquisition and Analysis system
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Phased array pulse echo ultrasonic inspection system
mounted on robot
• Requirements:
– Criteria: 6 x 6 mm
– Indication of 3 x 3 mm
• Today:
– Skin:
• Squirter US TT system: ~10 cm² /sec
• US thickness measurement
– Stringers
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– Stringers
• US A-scan handheld equipment: ~5 … 10 mm /sec
• Tomorrow
– Thickness measurement during scan
– Skin:
• Phased array UD PE system: ~30 … 120 cm² /sec
– Stringers:
• Phased array UD PE system: ~50 … 200 mm /sec