Working Principle of Phased Array Ultrasonic Testing
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- Опубліковано 13 чер 2024
- Ultrasonic Phased Array probes are multi-purpose probes for medical ultrasound and industrial ultrasonic testing (PAUT). This video details the basic working principles of phased array, including electronic focusing, aperture control, angle control, and both linear and sectorial scans.
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Links to the individual sections of this video:
00:00 Welcome
00:12 History of Phased Array UT
02:13 Basics
03:46 Phased Array Angle Control
04:52 Focussing
05:22 Aperture Control (Element Subset)
05:53 Phased Array Linear Scan
06:37 Phased Array Sectorial Scan
07:23 Phased Array vs. Conventional
08:15 Focussing Focal Laws
08:45 Phased Array = Multi-Purpose
09:36 2D and Other Phased Array Probes
11:58 Final Thoughts
If you want to know more about ultrasonics:
Evolution of the Ultrasonic Inspection Requirements of Heavy Rotor Forgings Over the Past Decades: www.researchgate.net/publicat...
Evolution of the Ultrasonic Inspection of Heavy Rotor Forgings Over the Last Decades: www.researchgate.net/publicat...
Evolution of the Ultrasonic Inspection over the Past Decades on the Example of Heavy Rotor Forgings: www.researchgate.net/publicat...
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...
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If you want to reach me (Johannes Vrana) or my company (Vrana GmbH):
vrana.net/
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#PAUT #UT #UltrasonicTesting - Наука та технологія
Thank you so much. your lecture helped me in my interview.
Very much helpful video .It provides a lot of information in a very short duration
day 3 of watching this channel, learning a lot
More to be puiblished soon ...
This is a really excellent video
Great video. Extremely helpful!!!
Thanks
Schön erklärt Johannes
That “Unrestricted” in the bottom tells me this presentation was created on a Siemens system 😂
Close. In this case it tells you that the author worked for Siemens for many years.
Nice explanation explaining how it is not necessary to move the probe with phased array
You are very welcome ....
thank you sir
You are very welcome
Great
Good video❤️❤️
Thank you
Great video !
Does, sectoral scan and beam steering are the same ?
In case of secoral scan, what combinations are used ? Is it aperture control along with focusing or aperture control alongwith angle control ?
Thanks
Sectorial scans use beam steering. However, #1 sectorial scans are usually programmed to scan between two angles in certain increments and to show the result all the different angles are condensed into one picture (S-Scan). #2 beam steering is usually programmed angle by angle and evaluated using A-Scans.
Usually, sectorial scans just use beam steering and with a fixed aperture. But with some more advanced instruments and with the right application .....
Hi. Really nice video. Thank you. But the question is Do we really need the Phased array inspection in real inspection case (not for scince researchings) or it's just a playgame to spend some extra money, big enough money? Or we just enough with conventional inspection? Of course it depends of the task you need to resolve, but at 99% case of inspection
I would think at least in 50% of the inspection scenarios conventional UT is sufficient. A couple of scenarios where PAUT definitely makes sense: #1 automated UT electronic angle steering or sectorial or linear scans (both mainly due to the reduced number of probes); #2 manual UT: If it is not clear which probes you will need for the job. The situation is different with TFM - but more on this subject soon.
@@NDE40 I see. Thank you. Waiting for video about TFM
This is well explained! Is this also how the 5g antenna works?
A 5G Antenna uses a 2D Phased Array of 64 (8x8) individual antennas and they are using the same beam stearing we are using with PAUT based on delay laws. So YES.
How do you calculate the NearZone for phase array probes?
Good topic for a future video - in essence you use the same formulas which you use for rectangular probes. However you have to calculate it for every angle and for every aperture individually.
Why its needed a linear scan? I mean whats the problem with exiting all the available crystals at a time and gathering the Data instead of linear scanning? Thank you.
If you fire all at one it is like having a very big probe. Very big probes are highly directional and highly focussed (naturally). Therefore you would NOT cover the area under the probe but only a small focal point. And tilted indicates would be very hard to detect at all.
why there is dead zone in tofd..??
Thx you so much....but gudie me channel.how defined channel???
Could you tell me the time within the video your question is about. Thanks.
You have NDT group? add me
谁来教教我英文