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Testing with eddy current - explained simply
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- čas přidán 7. 08. 2024
- The eddy current method is often perceived as very complicated. Yet, it can be described with simple examples so that you can even feel and see the eddy current effect directly. In the following and further videos, we would like to present the technology of eddy current testing and other non-destructive testing methods. In addition, we will of course also show the application of various FOERSTER devices.
Do you have recommendations for further videos? Write your suggestions in the comments!
The eddy current method plays an essential role in various industries such as aviation or automotive. You can find more information about the application of eddy current testing under the following links:
Eddy Current Blog: blog.foerstergroup.com/de/kom...
Website: www.foerstergroup.de/de/deu/
LinkedIn: / institut-dr.-foerster-...
My name is Manfred Schmitz and I have been working in the field of non-destructive testing since 2014. NDT is an extremely exciting field for me because of the wide range of applications. The scope from "testing" people by CT (computed tomography) or medical ultrasound to materials testing with eddy current is incredible.
Timestamps
0:00 Intro
0:24 Generating eddy current with a moving magnet
1:28 How to get the eddy current signal on the screen
3:25 The eddy current signal in reality
4:17 Outro
The whole principle explained in very easy way to visualise. Thank you very much
Clearly explained and a little funny with the woah! Nice diagrams too. You are a very good teacher!
I highly grateful for your explanation Sir!
Love from India! 🙏🙏🙏🙏
You are so humble, it's interesting to understand your Videos
Incredible video!!!!💯💯💯 Im 47 and in a&p school rn. Doing this today in the shop and want to be prepared.
Thank you sir, you're a great teacher ❤
Great work Manfred!
Explained the topic really well👏
Thank you for this video!!! Helped me with my studying
Thank you for this efficient explanation
Very well explained
thank you for the knowledge
Clearly explained, thank you. We know that induced eddy current in the aluminium plate have both levitation and drag effect on the applied magnetic field. How can we keep the levitating effect of eddy current and eliminate the drag effect for a (Magnetic levitation) application?
this is what i needed
Finaaaaly i get it. Thanks!
Thank you
Good . Thanks 🙏🙏🙏🙏🙏
nice video
Sir good morning, i would like to ask about near field tube testing if what is the formula of it's depth penetration.thank you sir
thank yoU!
Eddy current dependent or independent of original field?
Please include the skin effect,depth of penetration and lift off factor in eddy current testing so as to develop a comprehensive presentation.
what does the schematic of the circuit look like?
Y GIVE ME GREAT way TO explanation ET
GRAZIE
Apparently it wasn't the intention of the teacher to actually knock the aluminium plate with his magnet, but it happened😂
Hi Manfred,
great video! I was wondering. How strong is the Magnet you use in the intro? In Kg.
Bye
80kg
🔴Either something WRONG or something I don’t understand it..
How an aluminum reacts to magnets, does it got an update?
The other thing is that a magnet suppose to attract metals not the opposite.
Any clarification?
Imagine graphene would be interesting in your initial testing. Graphene oxide on the other hand is magnetic. I suspect advancements in eddy current as new materials get explored.
Is it possible to reliably measure the conductivity of a porous sample with this method?
Yes, but you have to consider that the conductivity is much lower for porous samples. We have customers which measure sintered products to track the production quality.
I'm bored at work playing with Neodymium magnets and different metals like aluminum and brass. So cool
👍👍👍👍
👍👍👍👍👍👍👍
2:13 can you explain this
Isn't aluminum non-magnetic?
But how does aluminium move by magnet...?
The moving magnet generates eddy currents in the material and the eddy currents create a field against the field of the magnet. Now both have the same field direction and repel each other, like two magnets.
electric current always surrounded by magnetic fields, right?
Correct
aluminium is not magnetic?
Exactly - only iron, nickel and cobalt are ferromagnetic at room temperature - ( en.wikipedia.org/wiki/Ferromagnetism )
Paramagnetic
based asf
1:19 see in 0.25x speed magnet touching Aluminum and thats why it happened 😂
Bear in mind, aluminum is not magnetic..Maybe the one you are using for the demonstration is an aluminum alloy already.
Aluminium is not magnetic, you are absolutely right in that. But aluminium is a conductor, and when a conductor is subjected to a changing electric field, it will create a current of its own, and when a current flows a magnetic field is build up. Yeah electromagnetism is weird. There are many great experiments on CZcams showing this, search for "magnet in a copper tube" to see what I mean.
Cheers
Guys exposed check 1 min 13 sec in slow
bro did not do the thug shaker 😿
It's a-lu-mi-num, not a-lu-mi-nium. Otherwise good video.
Aluminium is the British spelling, both are fine
@@water5210 Is it spelled that way in the dictionary?
@@nathanrice1796 yes
Apparently we've been saying it wrong since 1990