Love your videos mate! Just about to jump into PAUT, super excited! Would love a video on your preferences for encoders, wire vs wheel encoders etc, how to use different encoders, what’s most practical for real world non test plate jobs? You’re doing gods work mate, keep this gold mine of a channel going!
Absolutely excellent training. I’m not out in the field doing the UT two step anymore, but I really could have benefited from these videos back when I was out in the field, I would find SOMETHING and didn’t know how to interpret, and I would facetime a friend who is a jedi master of UT so he could watch my screen.
I started UT in the late 70's with a USM2 /USK 6 ,you soon pick up the trigonometry ratios to determine flaw location. What has changed is the lost art of echo dynamics. Which was much easier with an analogue set. Determining a root pattern from LORF or hydrogen flake from N.M.I.s in a heavy forging. Having been a PCN examiner it is possible to get a distinction whilst failing to recognise and correctly identify any of the flaws in the exam samples. Which should be a concern, similar to radiography without Rad interpretation. I obtained my PAUT /Tofd qualification 10 years ago (not recertified it) PAUT will definatley take over from manual UT as the price of it drops and it becomes standard on UT sets. I have to admit after years of manual UT I found PAUT / Tofd in practise very boring. Last week I took part in corrosion mapping an oil processing spooling an 8 hour shift felt like two weeks.
I always teach my students the 10/8 V-path in my UT classes. Love the Carolinas connections in this video: Adam Daniels at Sonaspection, FlawTech, and Vermon NDT.
I'm not surprised your sizing was inaccurate. You should only use 6db drop method on reflectors larger than the beam (Inverse Laws). Using it on a through thickness reflector like this would over size by 2-3 times. Max amp would have been very accurate if applied correctly.
I agree with it being used only on flaws larger than the beam, but I would also extend that to only large, purely planar flaws, which essentially limits it only to laminations. Alas, there is a lot of misunderstanding around it, and it continues to be taught as some sort of viable tool when in most cases it's just misleadingly simple.
@@hollowayndtengineeringinc.5201 Training for UT to level 2 is only 120hrs of which around 80hrs is practical training. So the concepts have to be simplified and we are only able to teach rudimentary skills in this timeframe. A L2 exam candidate is expected to find, identify and locate the reflector relative to its position in the weld. Detection and location are weighted more highly in marking than accurate measurement of the reflector. Going back to 6dB drop again (I know you LOVE this method lol). 6dB drop can be used on any type of reflector and can be very accurate on some reflectors, especially if the method is mechanised with a scanner. However the major mistake operators make is that the measured length is that of the reflector PLUS the beam width at that beam path (depth). If you subtract the beam width you will get the a more accurate length :)
Good day sir, we have to make a PAUT procedure but the client concern is transverse crack. Can you tell me or make a video discussing the right approach to finding transverse crack
Love your videos mate! Just about to jump into PAUT, super excited! Would love a video on your preferences for encoders, wire vs wheel encoders etc, how to use different encoders, what’s most practical for real world non test plate jobs?
You’re doing gods work mate, keep this gold mine of a channel going!
Thank you for the shout out x
Thanks sir🙏
Absolutely excellent training. I’m not out in the field doing the UT two step anymore, but I really could have benefited from these videos back when I was out in the field, I would find SOMETHING and didn’t know how to interpret, and I would facetime a friend who is a jedi master of UT so he could watch my screen.
I started UT in the late 70's with a USM2 /USK 6 ,you soon pick up the trigonometry ratios to determine flaw location.
What has changed is the lost art of echo dynamics. Which was much easier with an analogue set. Determining a root pattern from LORF or hydrogen flake from N.M.I.s in a heavy forging.
Having been a PCN examiner it is possible to get a distinction whilst failing to recognise and correctly identify any of the flaws in the exam samples. Which should be a concern, similar to radiography without Rad interpretation.
I obtained my PAUT /Tofd qualification 10 years ago (not recertified it) PAUT will definatley take over from manual UT as the price of it drops and it becomes standard on UT sets.
I have to admit after years of manual UT I found PAUT / Tofd in practise very boring. Last week I took part in corrosion mapping an oil processing spooling an 8 hour shift felt like two weeks.
I always teach my students the 10/8 V-path in my UT classes. Love the Carolinas connections in this video: Adam Daniels at Sonaspection, FlawTech, and Vermon NDT.
I'm not surprised your sizing was inaccurate. You should only use 6db drop method on reflectors larger than the beam (Inverse Laws). Using it on a through thickness reflector like this would over size by 2-3 times. Max amp would have been very accurate if applied correctly.
I agree with it being used only on flaws larger than the beam, but I would also extend that to only large, purely planar flaws, which essentially limits it only to laminations. Alas, there is a lot of misunderstanding around it, and it continues to be taught as some sort of viable tool when in most cases it's just misleadingly simple.
@@hollowayndtengineeringinc.5201 Training for UT to level 2 is only 120hrs of which around 80hrs is practical training. So the concepts have to be simplified and we are only able to teach rudimentary skills in this timeframe. A L2 exam candidate is expected to find, identify and locate the reflector relative to its position in the weld. Detection and location are weighted more highly in marking than accurate measurement of the reflector.
Going back to 6dB drop again (I know you LOVE this method lol). 6dB drop can be used on any type of reflector and can be very accurate on some reflectors, especially if the method is mechanised with a scanner. However the major mistake operators make is that the measured length is that of the reflector PLUS the beam width at that beam path (depth). If you subtract the beam width you will get the a more accurate length :)
Good day sir, we have to make a PAUT procedure but the client concern is transverse crack. Can you tell me or make a video discussing the right approach to finding transverse crack
Those are pretty hard to find. You really have to skew the probe. I'll make a video on them someday. I have a nice sample here.
@hollowayndtengineeringinc.5201 how about pitch-catch method using omniscan x3?
1st again!