Echo to Echo

Two echoes are better than one, right? Of course!

There's lots of good resources online for this topic, the best of which (I think) are listed below:

This one has the math to show how the paint magically disappears, so if that's up your alley or you can't sleep, then enjoy!

[danielcielmaee]

Awesome video. Did you do a video on dual through paint thickness

[wanloqman.]

thank you paul, i gain knowledge from your explanation, will try to do hand on with my veo+

[rizwanshaikh]

Excellent... please please make video on RF, HALF AND FULL rectify mode and it's uses.

[LynZai]

in 1:12, why the path of echo 2 doesn't or why isn't there an echo follows this way: initial pulse-> reflect from the bottom -> pass through the interface between coating& part -> reflect from the top surface of the coating -> back into the object, reflect from the bottom of the part, received by the transducer?

[krishnabharathi]

Correct said in the end. We are using echo to echo, sometimes is not working due to corrosion or heavy coating also it's not working, and what is difficulty using TR probe plz explain

[amarmahabir]

How to tell the difference between a root indication and a normal root signature,

[jeffreywarke]

great help! I look forward to more videos!


do you just use sonatest? or other systems like GE, Olympus?

[cristhiangutierrez]

hello Paul, first and foremost thank you for always sharing such useful content, I have seen that this doesn't usually apply when you measuring through metallic coating, e.i: hot dipped galvanised materials, any tips on that?
cheers

[david-tracy]

really cool man. thank you!
have a good day

[efrentemez]

It is very interesting, thank you. But, what about both sides of the material with coating?

[hayderalasmkh]

Could you please speak about eddy current system

[deadlee]

How can one deduce the coating thickness percentage that is to be be dismissed as the probe’s dead zone?

[haroldishoy]

Does your UT unit have a TOF function?

[mikewill]

Hi, where does that (c+t+t) come from at the beginning of the second echo signal. Shouldn’t it be (c+t)?

[lacount]

Is it wrong if You measure between first and second echoes

[cesarporras]

Hi dear Poul. / to / or ^ to ^, could you show the difference, in some next opportunity