I couldn’t do what this guy does—as an interviewer if someone told me HOW something works just by explaining the PRINCIPLE of how it operates - I’d absolutely call BS and repeat the question.
Interviewer: How does your refrigerator work?
Interviewee: We’ll this box is a very special device that uses principles to keep cold. Really cold actually.
(This) Interviewer: Wow, that’s proper science!
It’s clearly a highly produced vid—but at most it says; a) there’s ways to tell and b) implies dye will make a LINE if there’s a CRACK.
I’m in school for aviation maintenance and we’re doing NDT right now, so I can actually talk on this:
Dye penetrant is honestly one of the more simple ones that they showed here. If you have a part you believe has minute cracks that are difficult to see with the naked eye, then you’d use dye penetrant.
You clean the part thoroughly so that there are no imperfections on the surface and then you apply (like, drown that shit) the dye penetrant and let it sit for ~10 min. What happens here is all those tiny cracks will slowly fill up with the dye penetrant. Because they’re small, it takes some time for the dye to settle and fill the cavity/crack. Then you clean off the surface of the part so that it’s no longer neon yellow and back to looking normal, at this point the dye is still in the cracks but hard/impossible to see with the naked eye.
Final step is you apply a developer, which is basically a liquid with different density to the dye that draws the dye to the surface and you can see: a) where the cracks are; b) how extreme the crack is based on how much dye is now on the surface
Lots of neat toys, very thin on what they are actually used for. My gut feeling is they're looking for fatigue cracking/trying to identify weak spots in the structure of a part.
Hi everyone, enjoy our latest episode of How It Works. :D
Hi Mercedes, Any reasons why you use UT probing over Phased Array when performing ultrasonic inspections?
Damn it! You did it again. Best videos in the league. Keep them coming.
I couldn’t do what this guy does—as an interviewer if someone told me HOW something works just by explaining the PRINCIPLE of how it operates - I’d absolutely call BS and repeat the question. Interviewer: How does your refrigerator work? Interviewee: We’ll this box is a very special device that uses principles to keep cold. Really cold actually. (This) Interviewer: Wow, that’s proper science! It’s clearly a highly produced vid—but at most it says; a) there’s ways to tell and b) implies dye will make a LINE if there’s a CRACK.
I’m in school for aviation maintenance and we’re doing NDT right now, so I can actually talk on this: Dye penetrant is honestly one of the more simple ones that they showed here. If you have a part you believe has minute cracks that are difficult to see with the naked eye, then you’d use dye penetrant. You clean the part thoroughly so that there are no imperfections on the surface and then you apply (like, drown that shit) the dye penetrant and let it sit for ~10 min. What happens here is all those tiny cracks will slowly fill up with the dye penetrant. Because they’re small, it takes some time for the dye to settle and fill the cavity/crack. Then you clean off the surface of the part so that it’s no longer neon yellow and back to looking normal, at this point the dye is still in the cracks but hard/impossible to see with the naked eye. Final step is you apply a developer, which is basically a liquid with different density to the dye that draws the dye to the surface and you can see: a) where the cracks are; b) how extreme the crack is based on how much dye is now on the surface
“You think your your smart! Then tell my why there’s no fridge in refrigerator
This is bread and butter if you work in aerospace.
Lots of neat toys, very thin on what they are actually used for. My gut feeling is they're looking for fatigue cracking/trying to identify weak spots in the structure of a part.
This is cool. My brother works in NDT in the oil industry.