Working Principle of Phased Array Ultrasonic Testing

[@efrow3552]

day 3 of watching this channel, learning a lot

[@NDE40]

More to be puiblished soon ...

[@wiccatubitube]

Thank you so much. your lecture helped me in my interview.

[@subhadeepbasu2936]

Very much helpful video .It provides a lot of information in a very short duration

[@NorthernGate777]

Nice explanation explaining how it is not necessary to move the probe with phased array

[@NDE40]

You are very welcome ....

[@the_chalmers_diaries9456]

This is a really excellent video

[@gorxor]

Schön erklärt Johannes

[@forrestfrench3265]

Great video. Extremely helpful!!!

[@NDE40]

Thanks

[@CP-xv3vf]

thank you sir

[@NDE40]

You are very welcome

[@sanoopsaji7680]

Good video❤️❤️

[@NDE40]

Thank you

[@fa2417]

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

[@NDE40]

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.

[@fa2417]

@@NDE40 I see. Thank you. Waiting for video about TFM

[@subhadeepbasu2936]

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

[@NDE40]

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 .....

[@Taste_Budz]

How do you calculate the NearZone for phase array probes?

[@NDE40]

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.

[@dentalpediadr.leeseasydent182]

Great

[@dadasese69]

This is well explained! Is this also how the 5g antenna works?

[@NDE40]

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.

[@hehehaha755]

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.

[@NDE40]

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.

[@premrp9987]

why there is dead zone in tofd..??

[@GabbarBaba-h3b]

It's may be more better when you it shows mc and prob image into it

[@umairsaeed7591]

Thx you so much....but gudie me channel.how defined channel???

[@NDE40]

Could you tell me the time within the video your question is about. Thanks.

[@umairsaeed7591]

You have NDT group? add me

[@leo-k2v6v]

谁来教教我英文