Dye Penetrant Inspection

Dye Penetrant Inspection
- Basic principle
- Practical procedure
- Pros and cons
Responsible for this video: Prof. Dr.-Ing. Rainer Schwab, Hochschule Karlsruhe (Karlsruhe University of Applied Sciences), Germany

[@akuphegodwill3484]

Thanks for empowering the young ndt technicians..

[@aerialenergyresourcesllc254]

Great video! Very informative.

[@lpsuzana]

Great video!! Detailed and very helpful. Thanx!!

[@tjvanderloop1686]

Great information on what to watch in seeing the defects in metals. TJ Vanderloop

[@hamidaraie2818]

Thanks for this NDT procedure, very well explained.

[@Evenkil]

Thank you for this video!

[@KarlLambrechts]

Absolute perfect instruction movie!!!

[@nour_raafat]

Great job, thank you so much

[@bhasithgates2900]

Thanks for uploading this types videos you gives more knowledge For working professionals

[@kvsalahuddin5]

Very helpful..thank you ❤

[@TristanDurandBuilds]

That was informative! Thanks for this video :-)

[@harsimrans6779]

perfect!!,thanks

[@salehinthedark7585]

the explaination is so clearly , thx a lot

[@tuanphamrmit]

Great video!

[@paramchahal9475]

Thats the best videooooooooo............. Love it

[@tropico503]

Awesome video, thanks!

[@carlosmoya2465]

extremely good video, thank you so much

[@pikumajhi4884]

The video content is so excellent, congratulations

[@haziqexrimah6805]

thank you so much ❤️

[@hanipgileseks]

very good explaination. love it

[@tanveerahmed3094]

thanks very helpful.

[@alexandrebarcelos3890]

Excelente demostração, de LP, estou usando aqui no trabalho também o LP removível a água;

[@SketchThem]

Great video thanks!! Studying for O’s and P’s ;)

[@suhassuravase8581]

This video is a short but really helpful thx for u

[@abdelfattahkhyralla2203]

This is awesome Thank you thank you thank you

[@keonnoh9409]

Great video!!! Thank you🎉

[@blackamericanlesbianprofes4357]

Thanks for this detailed video. I have this job. ☺

[@abhiramss7795]

Where r u working

[@i7xworld702]

Nicely explained 👍

[@RanjeetBhosale-od4pw]

Short and sweet

[@electrophon]

Awesome video.

[@hariommeena7877]

very nice to understand non destructive testing by dye penetrating

[@14dayztimeap8]

great tutorial. wish if they covered the whole material science.

[@subinperingave9777]

Nicely explained

[@heybrotelugu]

awesome :)

[@dhavalgajjar6296]

Thank you very much.

[@youfit5883]

Superb explanation

[@profesormarcelo1]

MUY BUENO !

[@sumaia4237]

Thank you very much

[@urielpelaezcdmx]

Interesting 👍

[@ajinkyaghongade836]

very good and informative video

[@gvbsvprao82]

Please encourage people to use safety accessories like hand gloves etc. But no problem it is just an improvement. but a nice presentation. all the best.

[@MaterialsScience2000]

Answer to "Please encourage people to use safety accessories like hand gloves etc.": Thank you, this is absolutely correct! Sorry for the extremely late reply (found your contribution in the spam folder)

[@CombraStudios]

You should see my average respond time :D

[@allonemagar8294]

Thanks for video...

[@suhelklusner]

It is one of the requirement to use sprinkle of water and not stream plus not at 90 degree wash. Thanks anyway for your efforts to contribute towards educating people.

[@surya691]

Great 👍👍

[@anishvishal130]

Good to understand

[@gvbsvprao82]

NICE ONE.

[@durgeshkumaryadav1755]

very helpful vedio

[@engmahmoudnabil9000]

hey how can i learn materials science ?! the best place where ?!

[@tomandtomi164]

One of the best material science channels, probably the best, but why you have stopped to upload new content since years😕

[@MaterialsScience2000]

Answer to "One of the best material science channels, probably the best, but why you have stopped to upload new content since years😕": Thank you, it’s just because I’m completely occupied with science. Hope I can deliver more videos in the future ...

[@mechtech_stuff]

Very Nice video

[@RAHULKUMAR-wm9wk]

Thank 🙏💕😌🙏🙇❤

[@joeljose6061]

helpful

[@satyavanedu]

The excess penetrant is then removed from the surface. The removal method is controlled by the type of penetrant used. Water-washable, solvent-removable, lipophilic post-emulsifiable, or hydrophilic post-emulsifiable are the common choices. Emulsifiers represent the highest sensitivity level, and chemically interact with the oily penetrant to make it removable with a water spray. When using solvent remover and lint-free cloth it is important to not spray the solvent on the test surface directly, because this can remove the penetrant from the flaws. If excess penetrant is not properly removed, once the developer is applied

[@tuanphamrmit]

then what happens?

[@AjitKumar-vk6is]

Thanks

[@vardhamanist]

Love her approach! 😍❤😘

[@yusnaniyusof1182]

thanks for the video. what if the test sample is black in color? the dye may not be that visible. any suggestion?

[@MaterialsScience2000]

Answer to "thanks for the video. what if the test sample is black in color? the dye may not be that visible. any suggestion?" In this case, a penetrant with a UV fluorescent penetrant is used, which is later analysed under UV light. ":

[@hmr777]

What about dry sanding off developer on aluminum parts after they have been pen. inspected?

[@MaterialsScience2000]

+Helen Reynoso You may always dry sand off any developer, as long as you do not damage your aluminium parts. It is better to wash the parts traditionally, but this is not mandatory if you dry sand them in any case.

[@gurbhejsinghdhaliwal7350]

Nice

[@ViceN53X]

I'm currently studying for a degree on Aviation Maintanence. One of my assignments is to perform the Dye Penetrant Inspection.. Should I have to buy my own Dye Penetrant or does the workshop provide it for me?

[@MaterialsScience2000]

Answer to "I'm currently studying for a degree on Aviation Maintanence. One of my assignments is to perform the Dye Penetrant Inspection.. Should I have to buy my own Dye Penetrant or does the workshop provide it for me?": I would advise to buy the professional dye penetrant substances, they are not very expensive.

[@culisteven4754]

i love her

[@somanjucreation46]

Usefulness video 2023.....seen this video.the who is mechanical brach like the comment's........

[@Nur_Md._Mohiuddin_Chy._Toha]

👍👍👍👍👍👍

[@rashedalyammahi7210]

How many minutes are

[@teresaisabelarquesdomenech3641]

Thanks for the video, it was really useful in my class, but my students noticed the person doing the essay is not wearint lab coat, gloves neither googles, after I told them liquids are toxic.

[@MaterialsScience2000]

Answer to "Thanks for the video, it was really useful in my class, but my students noticed the person doing the essay is not wearint lab coat, gloves neither googles, after I told them liquids are toxic.": Please wear gloves and wear lab coats; we were a bit thoughtless in the production of the video.

[@killerkills120]

Whats the name?

[@shishirdutt]

Excellent video, but washing the part directly is actually not correct because it may wash out the pentrant soaked in a minor surface flaw, e.g. a micro crack from a weld surface. Instead wiping with a cleaner liquid/water is recommended.

[@ardivai9019]

What chemical product do you use for that ??

[@MaterialsScience2000]

Answer to "What chemical product do you use for that ??": You probably mean the penetrant. It is a special oil with a low surface tension and a dye. We have several suppliers - you can easily find them all on the Internet.

[@aishahfirdaus1539]

Hi, why need to do pre cleaning the surface first?

[@MaterialsScience2000]

Answer to "Hi, why need to do pre cleaning the surface first?": It is important that the defects are open to the surface. If you already have a clean surface, cleaning is not necessary. However, if the surface has covers of rust, paint or other substances, you must remove them first, otherwise the penetrant will not be able to reach the defects.

[@jayesh6687]

Can it right aftet welding when piece are hot

[@MaterialsScience2000]

Answer to "Can it right aftet welding when piece are hot": Dye penetrant inspection as shown in the video only works at room temperature or, let us say, from 20 to about 50 °C. So if you weld a piece, you should let it cool down before testing it.

[@josepeixoto3384]

If the dirty coating is intact!!! then there is no crack,or it does not matter ?

[@MaterialsScience2000]

Answer to "If the dirty coating is intact!!! then there is no crack,or it does not matter ?" If the dirt coat is perfectly intact, the crack underneath the dirt coat cannot be detected

[@DomoSZN]

credits???

[@user-fo9wk1tw7s]

Know how deep the defect is

[@jonathanclark2557]

So is dye penetrant testing a water washable method

[@MaterialsScience2000]

Answer to "So is dye penetrant testing a water washable method": In most cases yes. Most penetrants are based on oils with an emulsifier as an additive for washing with water.

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[@sanketphadtare8530]

thanks...

[@phxdlr]

There are several described steps in this video that are incorrect.

[@sanjay0768]

water washable dpt

[@_Nobody_Special]

She has nice hair.

[@RichardJackson-xf8gl]

PPE - The use of gloves is a must. These chemicals can damage the skin.

[@MaterialsScience2000]

Answer to "PPE - The use of gloves is a must. These chemicals can damage the skin.": We absolutely agree; we were too careless when recording the video.

[@lalityadav5434]

Use water or cleaner

[@gvbsvprao82]

+lalit yadav there are two kind of medias, water washable and solvent removable, water and solvent to be used at respective procedure.

[@nw8000]

Hot

[@almartin9584]

Great Video Presentation. Would like your permission to use as a training aid, giving credit to the creator.

[@MaterialsScience2000]

Answer to "Would like your permission to use as a training aid, giving credit to the creator.": All our videos are under standard license. So please accept, that downloading is not allowed. But you can always set a link to any of our videos, or even show them via internet connection directly from KZbin.

[@RoyalPalaceRabat]

But washing parts must be done with Commercial Solvent not Water !

[@MaterialsScience2000]

Answer to "But washing parts must be done with Commercial Solvent not Water !": Not necessarily; it strongly depends on the penetrant. If the penetrant is designed to be washed off with water (it then contains an additional substance), it works well with water.

[@spugggaldon361]

So, that operator you have carrying out this inspection...... I'm going to say that they have almost never carried out a dye penetrant inspection before in their life. Why am I saying this? Well, first; lets look at their clothes. They have turned up in a light coloured (beige/cream) cardigan and it is clean. They have a spotless pair of jeans and shoes that have white bits on. Also, no gloves when testing. I know this is water washable but that shit literally penetrates everything it touches including your skin. Her hands are clean. Even under the nails! Second; They have carried out the test in a clean laboratory on white tables. Why doesn't it look like that table is used to slaughter Klingons on it? Seriously, that penetrant will turn all white tables pink and you will never scrub the pink out of it. Third and final point is a simple one. She is way too good looking to be an NDT inspector! However. It's a good video giving you the basic principles.

[@MaterialsScience2000]

Answer to "So, that operator you have carrying out this inspection...... I'm going to say that they have almost never carried out a dye penetrant inspection before in their life. Why am I saying this? Well, first; lets look at their clothes. They have turned up in a light coloured (beige/cream) cardigan and it is clean. They have a spotless pair of jeans and shoes that have white bits on. Also, no gloves when testing. I know this is water washable but that shit literally penetrates everything it touches including your skin. Her hands are clean. Even under the nails! Second; They have carried out the test in a clean laboratory on white tables. Why doesn't it look like that table is used to slaughter Klingons on it? Seriously, that penetrant will turn all white tables pink and you will never scrub the pink out of it. Third and final point is a simple one. She is way too good looking to be an NDT inspector! However. It's a good video giving you the basic principles.": Thanks for the detailed comment. It deserves a detailed answer. Well … yes, you are absolutely right. Retrospectively, we have made the mistake to denominate the second section "In practice". It should have been "Demonstration in the laboratory". If you wish to, you can watch our video on ultrasonic testing, which consists of three parts: the principle, the laboratory, and the (real) practice.

[@spugggaldon361]

@@MaterialsScience2000 it was just a silly reply pointing out the realities of doing these inspections. It's all good fun until you're trying to scrub penetrant off your face before going home. Or if you're going to a rave, break out the fluorescent and go wild! Have fun. Make more good videos.

[@MaterialsScience2000]

Thanks again, you have described the real practice. And no, no silly comment at all. I am a practical man myself and sometimes I gave up scrubbing off the stains. You have produced a smile on my face that can only be removed by plastic surgery ...

[@drewlowery1295]

U…And wait

[@user-xp1ds7bg1t]

the sound is not good I am quite disappointed

[@shubhamsarkar2186]

This is water washable.

[@bigbasket6382]

The image is too offensive

[@mysisterfanny]

Soo many mistakes in this video and bad practice. God forbid this was done during an audit. 😪

[@hdolk4349]

Remember to protect yourself and wear nitrile gloves on your hands!

[@mehmeteminergul9707]

Amk bize bunu sorular 10. Sınıfım

[@salvor1]

That's a worm gear. The worm gear shaft is what it's mounted on. Really? a 'gear wheel' -how about just a 'gear'? I suppose you call a 'drill' a 'drill motor' too. If you want to sound like you know what your doing, it's good to get some simple terminology correct.

[@joehendrix8442]

Are you serious salvor1?? Did you get this from the book of who gives a shit? The video is about a specific NDT method. Stop trolling and get a job.

[@gabrielapulgarinaguirre5341]

joe hendrix h un

[@anuragdasgupta955]

Hot ladies in the videos make efficient way to learn quicker...!! 😋😄

[@michaelgascoigne5280]

Did you want to do a penetrant inspection with her?

[@dowahiromaricaubinyah8746]

Jésus Christ nous aime abandonnons les choses qui ne glorifie pas son nom

[@makantahi3731]

is she single

[@itssandeepkashyap]

Bekarrr h😂

[@ukeshhari8880]

This is no good procidure🤢

[@makantahi3731]

do not buy these cranks

[@mechtech_stuff]

Very Nice video