next generation phased array ut total focusing method (tfm)
TRANSCRIPT
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Next Generation Phased Array UTTotal Focusing Method (TFM)
Gavin Dao and Alan CaulderAOS, Cincinnati, OH
Dominique Braconnier and John LorenzTPAC, West Chester, OH
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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
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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
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FMC/TFM: Some Benefits
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• 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
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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
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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
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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
…
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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
…
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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
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FMC/TFM: Some Benefits
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• 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
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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!!
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TFM Video: Vertical Resolution
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FMC / TFM
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EDM Notch Test Piece
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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
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Side By Side Comparison
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FMC / TFM
45°30°20°10°0°
Conventional PA
Lower Tip Echo
Upper Tip Echo
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EDM Notch Test Piece
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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
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Wave Modes: Pitch/Catch
Wave modes from one setup and data capture
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Test Piece
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Real Application: AUT Girthweld
Upstream SidePulse/Echo
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Velocity and Geometry Matter!
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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
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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
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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