How to measure strength? DIY stand vs Fiberglass vs Carbon Fiber vs Kevlar. Basics of composites #4.
Вставка
- Опубліковано 4 лип 2024
- ALEX LAB BLUEPRINTS
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ABOUT VIDEO
How to measure the strength of composite materials? In this video I show how to make DIY tensile stand, how to make composite samples. You will learn what material is the best for your project - fiberglass, carbon fiber or kevlar.
TIMECODES
0:53 About project
1:30 DIY strength test stand
4:31 Composite samples
9:37 Tests & results
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MUSIC (in clip order)
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Out On My Skateboard by Mini Vandals
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#alexlab #basicsofcomposites #3Dmodeling #3Dprinting #compositematerials - Наука та технологія
Ask technical questions here 👇
How about HDPE or UHMWPE/Dyneema?
Why not make it out of the structural fiberglass and put the carbon fiber as the final layer? Also, part of kevlar's strength is that it is offset by something like 45 degrees on each layer. If you haven't already, you could implement that technique into the structural fibreglass as well--it may affect the tensile strength by layer.
Well where is the repulsor?
@@brunoencizosalazar3897 are you gonna finance him for the cost of palladium??
Will the joints Of the suit be covered on a kevlar composite??
Also, how about a different epoxy that graphene from the flash graphene is added, maybe that the missing piece?
From what people said of putting graphene, if added to concrete, it will increase it's strength.
All your videos are 100% gold, they are so informative and cool, pushing the limits as to what is possible. You outperform the hacksmiths exoskeletons like it was butter! Its so cool! Love it! And im looking forward to seeing the progress.
I've done something similar for strength testing, but on smaller scales something that I have found works is to attach the wire/string to the load point at one point and a bucket for holding water on the other, then slowly add water until the test part snaps then weigh the bucket. A bit slower, but more exact than the lifting weight method and cheaper than a load sensor.
Alex great job again I am a very old subscriber and I really love how much you have progress on this project. I hope to finally find a big sponsor because you are the only one that I know who is so accurate and close to create a realistic and factional suite like this. Great job again and keep going!!
So glad I realised you had returned! ❤
Thanks for new video Alex and good luck because you are so close to 1 million 🎉😊
I'm loving the consistant videos keep it up!
Exciting ! Definitely experiment with different weaves !
Amazing work as always!!!
This video is amazing! Thanks so much for sharing all this info dude
Always happy to support an earnest, and dedicated, scientist as much as I can. Liked and commented. 👍
Bro every word out of your mouth flies over my head, but this is so cool could not stop watching!!
Good luck with the suit. Love your work so far. I have no experience but remember once saw a layering of carbon fiber (and possibly fiberglass and maybe kevlar weave) was done with a rotation of the layering resulting in stronger mesh for car part. I would recommend a small test with a rotation of 45 degrees to purposely misalign the weave...hope you try it and see if you get any benefit for the suit build.
One thing to consider is if you want the nice cosmetics of the beautiful carbon fiber, but still want the cost/strength of fiberglass or kevlar, you can simply use the stronger material, then put a single layer of the pretty stuff on the exposed surface. Might be obvious to some, but it's often overlooked.
Amazing as normal 👍
You need shallow angle lens, and position camera further away from the ruler, to decrease perspective distortion.
This way your measurements will be more accurate
I only just saw your latest video by chance. UA-cam suddenly stopped recommending me your videos after part 1 of this series. Glad to see you back though. I appreciate that you never post videos for the sake of releasing a video, each video shows something with purpose.
Thank you for your feedback, I also noticed it. Can you see all videos if you are on Alex Lab channel?
@@ALEXLAB yes, one of your shorts popped up for me. I saw it was from very recently, so I went to your channel and saw there were three whole videos that had slipped by me.
I've watched all your older videos, and so used to get each new one in my feed when it released. Sad to see this happen, and I'm sure it's disappointing for you too. Best of luck.
@@H34... same here
Some one get this man a contract, workshop, and grant!
great video would also be interesting to compair different bonder as that plays a big part in the stiffness and brittleness of the part
hey alex, this suit you talk about is the ironman suit ? im happy to see you back!!!
To add a little to the conclusion, fiber glass (S glass) is "stronger" than carbon fiber.
Fiber glass can withstand more tensile load than carbon fiber for a given weight, Kevlar is even stronger than that. Even if you use E glass (what more people use when they use fiber glass) carbon fiber is only about 20% stronger.
If the force is in compression Kevlar becomes much weaker than even E glass. Kevlar does however have very good abrasion strength compared to the other two. So if you plan on sliding across the concrete Kevlar is a good option
Carbon fiber is by far the most "stiff" of these three materials, which is why its used on lots of race cars, because the shape of an element is important to keep.
Carbon also has very little "elongation" compared to S glass or Kevlar, so if something is very positionally important Carbon is the way to go.
I love that "Нихера себе" at the end of the video 😄 Great job, I hope you will get the kevlar for your suit 👍
good video
Lets help alex for the Kevlar!!!!!
Estou trabalhando num projeto desses mas nessa questão de fibra de carbono ser.mais leve e bom , porém a Lan de vidro e bem flexível será que e possível juntas camadas de LAN de vidro e fibra de carbono , revestir de metal a armadura seria um peso a mais .
Bom mesmo assim eu espero ansioso para o próximo vídeo , deixe os vídeos com pelomenos uns 20 minutos , gosto de vídeos longos para maratonas enquanto janto e almoço , abraço aqui do Brazil não desanima estamos acompanhando 😁
Thank you for this video.
I am not sure you correctly factored in the different thicknesses of your materials, since you didn't go into detail on your calculations.
Just to be certain, the correct formula for the bending resistance of a rectangular crosssection is (Width*Thickness^2)/6.
That means for double the thickness, you would expect to see quadruple strength in terms of bending load.
Did you calculate it that way? Because I am suprised fibreglass comes out at the same strength as carbon fiber.
Also, consider apllying pressure to the part while the resin is hardening, for a higher density of fibres and better strength per thickness (weight) in the finished product.
Can we please get an update video on your lightsaber? I would be very interested in seeing a tighter laminar flow (I've seen it done with a MIG welder tip), as well as what would happen if you arc the high voltage from a stun gun into the blade. Please?
What about flying system like iron man
Imagine just combining all of them and getting a super composite
Love from india
What happens if you use a regular black fabric for non critical applications, instead of fibre glass ? Should work ? Some fabrics might be even more easy to stretch, give similar visual effect as carbon fibre, just with much less strength ?
Maybe 3d printed thin tungsten plates would be best for the chest but it will add weight and cost, kevlar is better but still expensive.
Check vaccum infusion of resin, stronger and lighter tgan your method
3d printed titanium about half a inch in diameter thin plates over laping the 6 layer of kevlar
The iron man exists!
I have a project i want to build but im now as knowledgeable as you, was wondering if you could help me out .
While I'm note entirely comfortable giving complete technical info on an open youtube channel, HDPE as a body armor substrate should not be dismissed. Depending on your needs (assuming ballistic?) density and weave retention under deformation are critical parameters to consider, and why kevlar has been the 'gold standard' to date. I know there is some advocacy for ceramics, but the downside is that they only protect/work Once and must be replaced after impact.
On the other hand, if there's a death squad approaching your house and all you have are floor tiles, they'll do an above average job (ahem, Once!).
12:10 what is the weight of carbon fibre and glass fibre samples you used in this test?
“I need YOUR SUPPORT😈” xD
7:43 Question: is there a roller that can be used that’s made of something that the epoxy will not stick to instead of using a card like you’re in the video?
Hello from Tokyo Alex! Big fan. I have a project that required a custom shape 1000psi tank… I’m hoping to use a a similar technique. The make the tank, would you know how many carbon fiber sheets would be needed for 1000psi? 800psi is CO2 gas.
I am also assuming they the 3D print coins simply be the “inner” shell and reinforced by adding the epoxy plus CF sheets over the 3D print?
What would you advise?
Wait what! I came back to watching your videos and now I see freaking giga chad guy is running your channel!
Can u share the sheet?
I think you're going to eventually have to get your knees replaced from the extra stress you're putting on them while riding your electric unicycle. And, knowing you, you'll have one knee in one material and the other in a different material and you will post your analysis of each material's performance.
Алекс лаб ты гений можешь поделиться чертежами?
Hay how are you?
Comment to feed the algorithm
Maybe if OceanGate used Kevlar/Carbon fiber instead of pure carbon fiber, they might still be around today…oops
Jet engine kaise banaye
If you had unlimited budget you could make it out of graphene
From vibranium
15:59 XD
нихера се
LIKE 👍 👍 👍 👍 👍 🤩 🤩 🤩 🤩 💞 💞 💞 💞
Alex do you think we chat friend
How did you unlock the thanos chin cosmetic?
shattering is good. it means that the energy of impact is directed away from the body. that is exactly why cars use it.
You don't wear car on your body. Shattering parts aren't good when they can stab you.
@@pitrek121g they wouldn't stab you because they fly outward. And you do wear car on your body. You sit inside a car, so it goes without saying that the car wraps around you
What are you taking about? Since when cars use shattering as protection of the occupants? It's completely the other way, modern cars use corrugated steel or aluminium crash structure that will deform, not break, thus absorb as much of the force created by impact, as possible.
@@Failer__ consumer cars use metal as a crumple zone. Race cars shatter as a crumple zone. Look up "WHY DO F1 CARS BREAK SO EASILY". Either way, it's obvious that shattering requires energy
*promosm* 😇
Эх а я так хател сматреть тебя но ты тепер стал разгаваривать на англиском пж дабавь рускую озвучку
У него же другой канал есть.
I dont know if u can do this or see this message but can u make me a iron man glove in iron that works and u can put your hand in it
And ill pay you
Славянские вперед😅
Kevlar is strong, huh? I saw it lose to a scissor just now. Weak I say! Weak!
I really hope this is a joke