New NDT Technicians need people like you. Please keep up sharing your great knowledge with us. Thank you very much.
@hollowayndtengineeringinc.52013 жыл бұрын
You are welcome!
@kmmining13594 жыл бұрын
Nice Video, Very proffessional and easy to follow instructions. Might I suggest the following: Use the "reference" block with the side drilled holes which you used to construct your DAC curve since you are measuring the difference in dB between the test piece and that block. Secondly I think it better you take the TLC on the test piece in the direction of scanning and not perpendicular to it. Grains become elongated in the steel rolling process and there will almost certainly be a difference in dB between Tx and Lx scanning directions, especially when dealing with steels such as TMCP. By the way, that is one hell of a SEXY Flaw detector... the machine, not you :) Liked and subbed.
@BM-ms3gr Жыл бұрын
Never seen a more simple explanation ✌
@pramodmyakal68755 жыл бұрын
very good Paul, Simple and easy explanation
@azzulove13 жыл бұрын
Thank you so much and very good explanation. Small doubt you made transfer correction on weld plate opposite direction to scan direction, its not big issue but rolling plates may have anisotropic nature, but here our intension is how to perform transfer correction
@soumyasarkar95565 жыл бұрын
Excellent explanation. Simple & informative.
@MyCanucks20113 жыл бұрын
Thank you very much for sharing this knowledge and for making it simple.
@hollowayndtengineeringinc.52013 жыл бұрын
Thank you for watching!
@weendemgoncalvesdeoliveira2 жыл бұрын
Aqui no Brasil os procedimentos de inspeção nos obriga a fazer a perda por transferência no mesmo sentido e direção que será executada a varredura, ótima explicação.
@jeffersononetwo4 жыл бұрын
Another great video Paul!
@omarsami3593Ай бұрын
good job keep it up
@nazramwanmohd20173 жыл бұрын
Thanks a lots Paul.
@ellicomzzy24344 жыл бұрын
Thanks Paul, your videos have been helpful. Pls I have a question on some other areas which I will appreciate your assistance. Thanks paul
@Zack_8413 Жыл бұрын
the correction is made in the same scanning direction on the plate here in Brazil
@jason36234 жыл бұрын
Is it all practical to do a Transfer correction on a curved reference block? Considering that the OD to ID (I) DAC point would be lower than the first OD to OD (V) DAC point. Or would you just use the (V) and (W) points? Thanks for the great video.
@hollowayndtengineeringinc.52014 жыл бұрын
V and W
@Big-mike071262 жыл бұрын
Thank you Paul
@PhiHung4513 ай бұрын
that's sound great. thanks so much
@dinho9492 Жыл бұрын
Thanks for video🙏, From Borneo Sarawak
@ArunKumar-yo3yx4 жыл бұрын
Please make a video on DGS method and its practical importance in Longitudnal beam inspection and Shear Beam inspections
@LukaszSpigiel3 жыл бұрын
Thank you, an excellent explanation!
@zacharymartin1876 Жыл бұрын
Just did my EMC/General UT2 written exams. Was blind sided by this and other questions as it was never mentioned in curriculum. Would happen to have any videos explaining rectangular probes? All in one?
@hollowayndtengineeringinc.5201 Жыл бұрын
There isn't really much explanation required for rectangular probes, but all-in-one shear wave probes might be interesting to talk about. They are more common in Europe.
@jackcharlie9319 Жыл бұрын
Does the transfer correction apply also to 0 degree compression thickness testing? Or isit only with an angled beam?
@hoyinlaw34089 ай бұрын
Hello Paul, I would like to know the difference between transfer correction and range setting correction. May you please discuss it?
@hollowayndtengineeringinc.52019 ай бұрын
I haven't heard of range correction. Sorry.
@mohammedshahnawaz70773 жыл бұрын
Nicely explained...
@alalndt80413 жыл бұрын
Transfer correction Dac but you never tell this rolling direction or transverse direction and how to know this rolling direction or transverse direction sir
@ahmadfayyadhzainalabidin4053 жыл бұрын
Hi Paul! Can i ask you? What method you used for perform a transfer correction. I'm newbie in NDT please help me. THANKS.
@jason36234 жыл бұрын
Hi Paul. Is there a particular reason you use round 5Mhz transducers instead of rectangular? After watching this video are tried finding 5Mhz transducers but Iv only found round ones like the Olympus ones you are using. One of the procedures I use insists on rectangular probes.
@hollowayndtengineeringinc.52014 жыл бұрын
Hi Jason, I bet the procedure you're referring to is AWS D1.1. That code requires rectangular because that's what was around 50 years ago when it was developed. I prefer round transducers because the quick change type (screw in) are typically smaller. I do have some really tiny square shear wave transducers but they're all one piece (crystal and wedge).
@nolum86463 жыл бұрын
I wish you can show the setting where you turn the machine to through mode
@santiagocruz90603 жыл бұрын
Hi paul this is the same transfer correction procedure use in api1104?
@hollowayndtengineeringinc.52013 жыл бұрын
Yes, but API uses it for determination of refracted angle as well as attenuation.
@santiagocruz90603 жыл бұрын
Thanks
@bacelismael86873 жыл бұрын
thanks for the informative video :) may I ask a question? two actually 1- do I need to calibrate for distance and velocity/delay before establishing a DAC curve? or it doesn't matter anyway? 2- if I want to inspect using a 5MHZ 70-degree probe, but my Cal Block doesn't have enough space to do so, can I use the same frequency 5MHZ but 45 degree probe? knowing that all my probes from the same manufacturer and same element size?
@hollowayndtengineeringinc.52013 жыл бұрын
1. Yes 2. No
@bacelismael86873 жыл бұрын
@@hollowayndtengineeringinc.5201 that was pretty fast o_o thanks a lot! that was very very helpful
@reginaldogomes71233 жыл бұрын
This correction should be checked in the same direction as the inspection ie 90 degrees from the weld.
@hollowayndtengineeringinc.52013 жыл бұрын
You bet
@brodiebasterfield19235 жыл бұрын
Good video
@geemarino60663 жыл бұрын
The degree angle must be the same as the another probe angle also??
@hollowayndtengineeringinc.52013 жыл бұрын
Yes
@geemarino60663 жыл бұрын
@@hollowayndtengineeringinc.5201 Thankyou sir this is a nice video it helps a lot .... From philippines
@kiransetty5656 Жыл бұрын
Hello Sir, Can I use transfer correction to check the variation in attenuation of materials which are having different sound velocities?
@hollowayndtengineeringinc.5201 Жыл бұрын
Not really, since the difference in velocities will produce different refracted angles.
@kiransetty5656 Жыл бұрын
@@hollowayndtengineeringinc.5201 He'll sir, thanks for the quick reply. What if I am making transfer correction using a normal beam probe?
@ndthero3 жыл бұрын
Can you use this transfer correction value on your PAUT instrument?
@hollowayndtengineeringinc.52013 жыл бұрын
Hi Eddie! Ya I think it would be no problems. Provided the frequency of the conventional pair you used for doing the xfer correction matches the PAUT probe(s) you're using for examination, it's all good.
@farisirfan99473 жыл бұрын
Hi sir Paul, if i do transfer correction by using Pulse Echo mode instead of Dual mode is it valid?
@farisirfan99473 жыл бұрын
Im using single crystal angle probe
@hollowayndtengineeringinc.52013 жыл бұрын
You would need identical reference reflectors in both, and identical thickness. Much easier to use two probes in pitch catch.
@farisirfan99473 жыл бұрын
Thank you sir! Btw, nice video and explanation 🙏
@anartysonboxing75323 жыл бұрын
👍
@kiransetty5656 Жыл бұрын
Do I need to calibrate my equipment (for Velocity) in Pulse-echo mode or Dual/Through mode to make transfer correction? Thank you.
@hollowayndtengineeringinc.5201 Жыл бұрын
Not really, no. Your pulser and filter settings should be the same as what you will use during examination, but the precise measurement of the arrival time is not important. Only the difference in amplitude between the reference block and the test piece is needed.