The Future of Phased Array Ultrasonic Testing: FMC / TFM
HTML-код
- Опубликовано: 28 июл 2024
- The Total Focusing Method (TFM) is an important step toward the future of Phased Array Ultrasonic Testing as it eliminates most of the artifacts caused by sector scans or linear scans. It uses standard phased array probes - but instead of using delay laws it uses Full Matrix Capture (FMC) to collect the data and the Total Focusing Method is actually the subsequent reconstruction technique to visualize the result. This video details some of the drawbacks/challenges of PAUT and how they can be solved using TFM.
A big thanks to Cyril Thibault from AOS (www.aos-ndt.com/) for the PAUT and TFM images.
If you like my videos, the best way to support this channel is to watch the videos all the way to the end, leave dozens of comments, give a thumbs up, and subscribe to the Channel. Or get in contact with me so that we can discuss your needs for training, consulting, and solutions.
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
Links to the individual sections of this video:
0:00 Welcome
1:07 Phased Array Ultrasonics
3:48 PAUT: Sector Scan
5:44 PAUT: Linear Scan
6:35 PAUT Artifacts
6:56 FMC/TFM Introduction
7:27 Working Principle of Full Matrix Capture
9:35 Working Principle of Total Focusing Method
12:35 PAUT Linear Scan vs. TFM
12:55 PAUT Sector Scan vs. TFM
13:09 PAUT vs. TFM
14:28 Final Thoughts
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
UT Videos:
► History of Ultrasonic Testing
• History of Ultrasonic ...
► Basics of Ultrasonic Testing and Sizing
• Basics of Ultrasonic T...
► Basic Acoustic / Ultrasonic Waveforms, Refraction & Snells Law
• Basic Acoustic / Ultra...
► Working Principle of Phased Array Ultrasonic Testing
• Working Principle of P...
► Automated Ultrasonic Testing
• Automated Ultrasonic T...
► Basics of the Ultrasonic Sound Field and why some of your training material might not be adequate
• Basics of the Ultrason...
► How to Determine the Optimal Scanning Grid for Your Ultrasonic Inspection
• How to Determine the O...
► Ultrasonic Calibration and Sizing with DGS (AVG)
• Ultrasonic Calibration...
► Ultrasonic Testing: Can I detect what I am required to detect?
• Ultrasonic Testing: Ca...
► Ultrasonic Computed Tomography / SAFT: The Next Generation of Ultrasonic Testing
• Ultrasonic Computed To...
► QSAFT: Growing SAFT from an Imaging Tool to a Complete Quantitative NDT Technique
• QSAFT: Growing SAFT fr...
► Ultrasonic Testing Sizing Method Comparison & Limitations
• Ultrasonic Testing Siz...
► The Future of Phased Array Ultrasonic Testing: FMC / TFM
• The Future of Phased A...
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
NDE 4.0 Videos:
► Welcome to the World of NDE 4.0
• Welcome to the World o...
► The Four Industrial Revolutions
• The Four Industrial Re...
► The Four NDE Revolutions
• The Four NDE Revolutions
► Top 5 Scary Opinions on NDE / NDT
• The Top 5 Scary Opinio...
► What is NDE 4.0? - The major use cases for NDE 4.0
• What is NDE 4.0? - The...
► The WHY of Industrie and NDE 4.0
• The WHY of Industrie a...
► The WHY of NDE 4.0 @ Ripi Singh
• The WHY of NDE 4.0 @ R...
► Why do "I" need NDE 4.0? - A discussion on the Why of NDE 4.0
• Why do "I" need NDE 4....
► Semantic Interoperability using Ontologies and Information Models
• Semantic Interoperabil...
► The Idea of the Digital Twin
• The Idea of the Digita...
► Basics of Data Security
• Basics of Data Security
► Digitization, Digitalization, Digital Transformation, Informatization
• Digitization, Digitali...
► Why Proprietary Data Formats and Interfaces Hurt AND Why Data Transparency and Ownership are Key
• Why Proprietary Data F...
► What is the Industrial Internet of Things (IIoT) and How to Integrate NDE
• What is the Industrial...
► IIoT Core Connectivity Standards
• IIoT Core Connectivity...
► IIoT vs. Big Files in NDE: DICONDE
• IIoT vs. Big Files in ...
► How to Ensure Data Security and Ownership in the IIoT and in the Connected World
• How to Ensure Data Sec...
► The Value Generation Engine for Industry 4.0 and NDE 4.0: The Cyber-Physical Loop
• The Value Generation E...
► We don‘t need NDT. A couple of sensors will do a better job!?
• We don‘t need NDT. A c...
► NDT: Unnecessary Cost Factor!?
• NDT: Unnecessary Cost ...
► Value Creation using Cyber-Physical Loops
• Value Creation using C...
► NDE 4.0 Ecosystem, its Core Stakeholder, and Value Chains
• How YOU are Integrated...
► The Top 5 Scary Myths on Digital Twins
• The Top 5 Scary Myths ...
► Digital Twin: A Fancy 3D Visualization!?!
• Digital Twin: A Fancy ...
► What is Industry 5.0?
• What is Industry 5.0?
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
If you want to reach me (Johannes Vrana) or my company (Vrana GmbH):
vrana.net/
/ jvrana
/ vranagmbh
/ ndeconsulting
www.xing.com/profile/Johannes...
▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
#PAUT #TFM #UT #UltrasonicTesting #NDT #NDE #NDE40 #Ultrasonics #Ultrasound 
Наука
Good video. The problem of the TFM is, that it has many propagation modes and whe you choose wrong one, you will not see the imperfection inside the material. So you have to inspect the material with more propagation modes to be sure, that you catch the flaw.
For me that is actually a benefit. In classic UT or PA you never know if the indication was caused by L waves or T waves which can lead to misinterpretations. In TFM you can distinguish and it is not that you have to collect the data multiple times - you only nees to do the data processing with different parameters. And in my eyes a good manual TFM instrument should allow to do multiple reconstructions of the same data set and display them at the same time.
What a great video
Thank you so much
very good idear
Thank you
very good video. I have a question. What is the dead zone of the phased array transducers? thank you Dr. Vrana!
The sound is generated by your active element, travels through some couplant, and is partially reflected where your sound enters your actual part. This reflection goes back through the couplant and is reflected again by your probe. This continues and leads at the beginning of every A-scan to an increased noise level. This is the dead zone. It is the zone where you can not detect anything as the noise, caused by this bouncing back and forth between the active element and the entry surface, is too high. And it is the same effect for conventional and Phased Array probes.
On the other hand, the near field is the natural focus point of your beam, which can be calculated. This video can help: ruclips.net/video/xWRABwg1TB8/видео.htmlsi=M8IclHFQWzDRgFhr
@@NDE40Ok thank you very much. In other words the PA transducer has a dead zone like the conventional probes. We are talking about 3-6 mm of dead zone below the surface. From this point of view there are no advantages in using the PA instead of the conventional transducers. Correct? Thank you again. Best Regards. Massimo.
@@user-fq6et1en9e Exactly - phased array and conventional probes with the same aperture also have a similar deadzone. Actually, I found that the deadzone of phased array probes is a tad longer. This is where TFM can help (but only if done correctly).
Thank you for the detailed explanation! Your channel is the best in the field of NDE indeed.
However, I was wondering if you have ever dealt with NDE for concrete structures and if you have some recommendations for that. I think the most used tool is MIRA, but I couldn't find enough materials that talk about the instrument and how it is used in the best way.
My expertise lies more on the industrial side of NDE - but last year we had a project designing an inspection for a concrete structure - and like everybody we tried the MIRA. In my eyes, the instrument did a pretty good job. It uses something similar to FMC/TFM.
Great Video! In most applications the scanning speed is very important. FMC/TFM is certainly much slower compared with "standard" PAUT. What is your view on this?
Not necessarily. TFM Speed scales linearly with the number of elements and PAUT with the number of focal laws. Moreover, PAUT usually generates more ringing as the beam is directed. Therefore, the PRF of TFM could be higher. The third limiting factor is the speed of data transfer - so You need to be careful which instrument to buy.
I'm intrigued about why you describe as high frequency the A-scans from each capturing elements. I get that we're talking about ultrasonic waves, but shouldn't we reserve such description to frequencies above like 10MHz?
The High Frequency in the A-scans is not about the ultrasonic frequency. So-called HF (high frequency) A-scans are not rectified, are usually not compressed, and use a sampling rate that is at least 5 times the frequency of your ultrasonic frequency.
@@NDE40, awesome! That makes perfect sense to me now. Thanks a bunch!