Methods to test materials - Tensile test - Brinell hardness test - Vickers hardness test - Rockwell hardness test - Charpy impact test - Fatigue test - Metallography part I - Metallography part II - Dye penetrant Inspection - Magnetic particle examination - Ultrasonic testing - X-ray inspection and computed tomography - Scanning electron microscope - Eddy current testing Responsible: Prof. Dr.-Ing. Rainer Schwab, Karlsruhe University of Applied Sciences, Germany
Our company is a manufacturer specializing in the production of pull and push equipment with accurate detection. If necessary, please click on my homepage for details! 😁
The non-destructive chemical composition detection due to the type of emitted x-ray is freaking brilliant. Pieces of the puzzle become illuminated once you begin to construct the picture.
Answer to "How to etch 3D printed 316 l sample ? I am etching with swab I can scratches I think those are of swab. Is it okay to deep sample in etchant": It is generally better to prepare a good microsection and then immerse the entire microsection in the etchant, as shown in the video. Etching with a swab is also possible, but only soft and clean swabs should be used to avoid scratches.
Answer to "Why we should mark distance with regular intervals?": The marks at regular intervals are not absolutely necessary. Their main purpose in the video is to show the inhomogeneous plastic deformation of the sample. They also make it easier to determine the exact plastic properties. For professional or scientific purposes, the marks are very fine and precise, not as broad as in the video.
I guess it's not necessary to put the drag-indicator at 0, only below the expected final position? At another video where many tests were executed the testerperson just give it a swing back for each test...
Answer to "I guess it's not necessary to put the drag-indicator at 0, only below the expected final position? At another video where many tests were executed the testerperson just give it a swing back for each test...": Correct!
Hi, could I use part of this video for my next video? It deals with the engineering of aircraft Panavia Tornado and I would give a short description of fatigue aspect. Thanks
Answer to "Hi, could I use part of this video for my next video? It deals with the engineering of aircraft Panavia Tornado and I would give a short description of fatigue aspect. Thanks": Sorry, that's not allowed; we've had bad experiences. Good luck with your videos!
I just started doing this at my job. Still fairly new to it. How would i know the difference between a legit deep crack and one that is more of a surface defect? Not sure if you guys will understand what im trying to say lol
Answer to "I just started doing this at my job. Still fairly new to it. How would i know the difference between a legit deep crack and one that is more of a surface defect? Not sure if you guys will understand what im trying to say lol": This one of the problems of MPI, the depth of a crack cannot be measured reasonably.
Very nicely done! =Kudos to the voice-over actor, she pronounced everything correctly and gave the impression she was a true expert in the field. much to think about. The animation was excellent!!
Answer to "at 01:10, don’t forget that applying an alternating voltage is what creates an alternating current which will create an alternating magnetic field.": Perfectly explained, thanks!
Hi, informative video, I have a question though: How to break a small sample out of a resin? if you have to perform hardness and you don't want the resin to effect the measurements, how shall I proceed to take out a sample from resin?
Answer to "How to break a small sample out of a resin? if you have to perform hardness and you don't want the resin to effect the measurements, how shall I proceed to take out a sample from resin?": You do not need to remove the sample from the resin. Select a suitable test force for the Vickers hardness test (e.g. 1 or 0.1 kp) and carry out the test. Only clamp the resin properly, it should not move horizontally or tilt. A slight elastic yielding has no consequences, as the Vickers test is force-controlled. Good luck!
Answer to "I've been a metallurgist for over 40 years - 2% Nital would have been better than 10% . Also why not refer to the steels as 1054, 1080 etc.": Thank you! You are right about using 2% Nital. The etching time is longer, rinsing is easier, etc.. We used 10% Nital to speed up the etching time for the video. And we used the standardised European designations for the steels, simply because we live in Europe. Unfortunately, there are no international (ISO) steel designations yet.
