next generation phased array ut total focusing method (tfm)
TRANSCRIPT
Next Generation Phased Array UTTotal Focusing Method (TFM)
Gavin Dao and Alan CaulderAOS, Cincinnati, OH
Dominique Braconnier and John LorenzTPAC, West Chester, OH
Introduction• Preview of Advanced Imaging• What is Full-Matrix Capture (FMC)?• What is Total Focusing Method (TFM)?
– Standard TFM– Migration– Advanced FMC / TFM– Adaptive TFM
• Images• About AOS• OEM-PA
Conventional Phased Array UT
Phased Array Linear Scan
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FMC/TFM
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Conventional PA vs FMC/TFM
Conventional Phased ArrayFMC/TFM
FMC/TFM: Some Benefits
6
• Beautiful Image!• Like a drawing of the test piece• Provides better perspective• Vertical Resolution Improved
– See next video• Lateral Resolution Improved
– 3 holes: Can see the small nuance of 3 mm center to center and 4 mm center to center
• Can see that the SDHs are 1 mm in diameter.
• Understand images a lot easier• Able to differentiate what is a real
defect vs geometry echoes
Our Technology
OEM-PAPhased Array UT
16/16, 32/32, 16/128, 32/128, 64/64128/128 and 256/256
OEM-MCMultichannel UT16ch and 32ch
OEM-PA + FMCAdvanced Imaging
FMC / TFMFast Data Rate at 140 MB/s!!!
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Advanced OEM Solutions (AOS)• Open concept: customize to application• OEM business model for cost effective solutions• Phased Array UT – manufacturer of full range of
instruments from standard to cutting-edge technology
www.aos-ndt.com
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OEMPA 128/128 with USB3• Super Fast Data rate!
– 160 MB/s (for high frame rate)• Full-Matrix Capture (FMC)• Total Focusing Method (TFM)
– Standard TFM– Migration TFM– Advanced TFM– Adaptive TFM– And more… (TFMp, SURE, Non Linear)
• Utilizes GPU– For faster TFM calculation speed
• Open! – Access raw data and low level parameters
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OEM-PA 256/256• Super Fast Data rate!
– 160 MB/s – Faster Scan Speeds
• DDF (Dynamic Depth Focusing)– Zone Focusing + DDF
• 3D Focal Law Calculator API– Matrix Phased Array Probes– Custom MPA Designs
• CTUT– Proprietary Technique for High
Speed In-Line inspections for Bar/Tube industry.
• Open! – Access raw data and low level
parameters
OEM-PA Configurations
Advanced PAUT 256/256 YES!
256/256 + FMC YES!
256/256 + FMC + 160 MB/s YES!
256/256 + Matrix Phased Array YES!
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Software
AOS Provides…• Software Development Kit (SDK)• Dynamic Link Libraries (DLL)• Application Programming Interface (API)• Full control of Phased Array Parameters• Receive each A-scan in a buffer that can be interfaced to your own software• Full Documentation Set
• Customize: Create a simple dedicated application. Don’t get stuck with an overly complex software where you only use 5% of the features
Develop Your Own Software
Use 3rd Party Supported Software
OR
Full-Matrix Capture (FMC)
PulsePattern
ReceivePattern
In this example, we have 4 elements…
4 x 4 = 16 Raw A-scans
Cycle 1 Cycle 2 Cycle 3 Cycle 4
More on FMCMatrix of Transmit / Receive Raw A-scans
Receive elements
1 2 3 4 5 6 7 ・・・
Transmit elem
ents
1
2
3
4
5
6
7
…
More on FMC• Not to confused with Matrix Phased Array
Receive elements
1 2 3 4 5 6 7 ・・・
Transmit elem
ents
1
2
3
4
5
6
7
…
Total Focusing Method (TFM)
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Mono-Static: Pulse/Echo
𝑜𝑜 𝑥𝑥, 𝑧𝑧 = �𝑖𝑖=1
𝑁𝑁
𝑦𝑦2𝑟𝑟𝑐𝑐 ,𝑢𝑢𝑖𝑖 ,
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Multi-Static
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Multi-Static• Point of computation (x,z) => time of flight with constant velocity• Reconstruction performed by focusing at each point (x,z) of the grid
• Flexible reconstruction grid :
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128el Probe with Alum Test Block
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Conventional Phased Array UT
Phased Array Linear Scan
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Conventional PA vs FMC/TFM
Conventional Phased ArrayFMC/TFM
FMC/TFM: Some Benefits
22
• Beautiful Image!• Like a drawing of the test piece• Provides better perspective• Vertical Resolution Improved
– See next video• Lateral Resolution Improved
– 3 holes: Can see the small nuance of 3 mm center to center and 4 mm center to center
• Can see that the SDHs are 1 mm in diameter.
• Understand images a lot easier• Able to differentiate what is a real
defect vs geometry echoes
Advanced TFMAdvanced TFM• Use GPU for faster
calculation time• Efficient Pulse/Receive
method to capture raw data
• Optimized post processing
• Faster Frame Rates!!• High resolution!• Excellent SNR
Significant improvement over conventional FMC and TFM technique!!
TFM Video: Vertical Resolution
FMC / TFM
EDM Notch Test Piece
Lower Tip Echo
Upper Tip Echo
• Indication from upper and lower tip.
• Center of slit is difficult to see.
• Can be easily misinterpreted as two separate defects or SDHs very close together.
Conventional PA
Side By Side Comparison
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FMC / TFM
45°30°20°10°0°
Conventional PA
Lower Tip Echo
Upper Tip Echo
EDM Notch Test Piece
TFM Setup Wizard
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TFM Data Viewer
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Wave Modes: Pulse/Echo
Wave modes from one setup and data capture
Wave Modes: Pitch/Catch
Wave modes from one setup and data capture
Test Piece
Real Application: AUT Girthweld
Upstream SidePulse/Echo
Velocity and Geometry Matter!
Adaptive TFM
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Amazing Near Surface Resolution!
FBH:Diameter: 0.016” (0.4mm)MTD: 0.060”(1.5mm)
FMC/TFM: Titanium
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TFM Imaging: 1” Steel Bar
1” ThickVertical Crack 0.8”
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More about OEMPA• Flexible and Open Concept• Complete SDK• Fully documented API with Source Code• Compact Form Factor• Cost Effective• Ease of Integration• Excellent Signal-to-Noise Ratio• Advanced Features
OEMPA 64/64 is Small!!• With Enclosure: 105mm x 124mm x 112mm• Bare Module: 90mm x 110mm x 70mm • Height x Width x Depth
16/16 32/32 64/64 16/128 32/128 128/128 256/256
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OEM-PA 256/256• Super fast data rate!
– 140 MB/s – Faster scan speeds
• DDF (Dynamic Depth Focusing)– Zone Focusing + DDF
• 3D Focal Law Calculator API– Matrix Phased Array probes– Custom MPA designs
• Volume Focusing– Proprietary technique for high
speed In-Line inspections for bar/tube industry
• Open! – Access raw data and low level
parameters
OEM-PA Configurations
Advanced PAUT 256/256 YES!
256/256 + FMC YES!
256/256 + FMC + 140 MB/s YES!
256/256 + Matrix Phased Array YES!
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OEM
64/64*I/O Board and Power
Supply Boards not shown.
16/16
Original Equipment Manufacturer Re-brand Create your own product Add value with your own unique solution
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OEM-PA LITE
Dimensions:16/16 = 140 x 125 mm32/32 = 140 x 165 mm16/128 = 140 x 165 mm32/128 = 140 x 180 mm64/64 = 2 x 32/32 size
Small form factor Easier integration into a custom portable enclosure
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OEMMC: Multi-Channel UT• Board Dimensions = 11cm x 7cm• 3 Boards must be stacked (approx 3.5cm). 3 boards PWS, IO and Probe
Connect also must be accounted for, but it doesn’t need to be stacked.• Weight < 300g• Power < 15W (Ways of improving this, please consult with AOS)
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11cm
7cm
General Purpose PA Software
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General Purpose PA Software
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Wizard GUI
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Wall Thickness Inspection
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Specific Weld Inspection SW
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Summary of Benefits• Advanced Imaging
– FMC / TFM• Standard Technology
– Phased Array and multichannel UT
• Small Form Factor• Open Platform• Opportunity to
customize software• OEM model
