How STRONG is 3d printed CARBON FIBER?
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- เผยแพร่เมื่อ 17 พ.ค. 2024
- In this video we will experiment to see if carbon fiber 3d printed parts are actually stronger than regular 3d printed parts. It is important when engineering or designing something to consider the material properties. See pinned comment below if you want a 3d printer!
Carbon fiber strength test. Education Physics, and Science Experiment with a 3d printer.
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This video is outdated. I’ll need to revisit this experiment with better methodology.
Yipper
i'd say it's perfect to show the difference between the carbon fiber print and the pla
and i have to say: this was very well explained very easy to understand and also very interesting to watch
Thank you, nice, please try breaking the PLA Carbon fiber compared to standard 20x20, 30x30, 40x40 aluminum extruders.
Revisit note.
Also please try one of the nylon parts soaked in water
Just because it never "snapped" doesnt mean its not a failure. If it cannot return to its original shape then its a failure.
Also notice that the displacement were the beam dropped was at about 12 kg of force, compared to 20+ for the carbon fiber. A 2:02 you see a carbon fiber beam with the same load doing just about nothing to it.
Not quite true, something changing its original shape doesn't mean it has failed. It is the reason you use a ductile material instead of a brittle material. What you are describing is leaving the elastic region and entering the plastic region (when an object doesn't return to its original shape). His definition of failure is actually called fracture and the PLA never reached fracture as it never finished its plastic deformation. It should also be noted that there is a range where an object will deform in its plastic region but still continue to carry heavier load until it reaches its ultimate strength.
Purely speaking from an engineering perspective, it depends what you want to use it for. Plastic deformation isn't necessarily failure, it really comes down to what you are using the material for
Failure is not yielding
@@anubis520 Agree, it hasn't failed until it yields, which is when it fails to return to the original shape. A flex test may not be the best for determining overall strength. Elongation and shear are also very important. Then it gets even vaguer when you test shock failure.
Didn't even know I was gonna learn something in this video but I completely understood it. Great video 👍🏼
Pla is usually known as a very brittle material compared to petg or abs
Kind of confused. PLA isn‘t ductile at all, it‘s one of the most briddle materials you can print.
That failure behaviour looks way more like PETG to me.
Yep. Would be interesting what Material he used.
I love how easy it is to understand with your explanation. You should test all the different stress types just to teach us more, I love learning.
What? Pla will snap, there are other channels that do this with 3d printed hooks the direction and angle determine the strength, as soon as the pla stopped holding weight around 13kg it failed, just because it's not in 2 pieces doesn't mean it didn't fail
This is probably not pure pla, some kind of additive will have been added to make it more durable
Nice video 👍
You should specify what brands of filament you used in your tests. There may be considerable variation in properties between products from different manufacturers.
It would be perfect to test many filaments of each kind, with different prices, and average the result, but such test would be quite costly.
i agree with this, and also people need to show their settings and setup. i feel like there could be miscalculations made on settings for the material which can cause inconsistent results. one major factor I could see is people testing materials without even dehydrating the filament with a dryer...
Thanks for sharing great experiments ! !
I haven't liked a YT video in years(and I binge watch YT vids a lot). Love it
Wow that’s a cool video you created to show what we want for our part to perform in。thanks ❤
Please use another printing direction for PLA (Flat surface down not the side)
With PLA you see the extruded lines in same layer are not anymore bonded together (to low flow or low bonding)
what pla do you use ?
It does not look like pla on your video
Hi. Is there a video for creating this test bench? Preferably with drawings. I would like to do the same for the educational process.
Very good! congratulations on the content!
This helped immensely. Than you.
r u able to do carbon fiber w/ pla infill, and pla with carbon fiber infill? to determine how much stronger/weaker an more or less ductile than these.
thats not even regular PLA, its some other material for sure. PLA is really brittle.
my thoughts exactly.... theres no way thats PLA or its VERY water logged
3:26 this consept is used in live hinges a live hinge is where the hinge is one solid piece ment to be bent over and over again and not break but every thing has a limit so it will break eventually
What infill % did you print these at?
Can you anneial CF Nylon? I forget which thermoplastics you can to add strength..
Can you use a dual head printer to make a interlaced beam of PLA and carbon fiber, some thing like a composite . I want to see the result of that. Please
You need to test print layer orientation too.
bruh saying PLA didn't fail is the equivalent of saying oh my sword didn't break it just bent 180 degrees backwards. Like no that is a absolute failure lmao.
He explained quite well with the graph how the property he was referring to works and it makes perfect sense, even without that part in which it bends completely you can see that you can compare directly the two initial lines of both graphs to get an actual measure of strength even tho it would be subjective to define when the material exactly failed, you say it failed because it was bent but how much did it have to be bent before being considered a failure? You might say "well if it still retains the original form it did not fail" but actually in many applications you do decide to go beyond that line, and use a material that will inevitably bend to a point it will not go back to normal and that would be fine, so not a failure.
@@simoneazzoni3882 you right bro if a building bends even 20 degrees in a direction its definitely not a failure lmao. I'd love to know what application someshing can bend 180 degrees and not be a failure. You are wrong dont need to explain it there is no circumstance a building material can be bend 180 degrees compromising its entire applied integrity and not be a failure lol. But sure man!
You lose credibility by starting your argument with bruh…
@@Thepedell apart from compliant mechanisms, that are a hot topic when it comes to 3d printing, a material that bends 180° under the intended load is not much useful, that is true, but you can not identify when it exactly failed, let's take for example two different steel pieces, the first one is an high carbon tempered steel, the same you would find in a file for example, the second is the common steal you normally find, under for example 100N the first might atill hold but the second one starts bending let's say it now has a 10° bend, at 101N the first one shatters violently, the second bends to 12°, which one is better? Well it depends on the application, the first one you can be sure will keep his shape, the second one could keep working even if it is bent, car axles can get bent a bit and still work, a gear rack should be as straight as it can due to the fact that the system will fail with even a 1° bend. To compare multiple materials tha behave differently that graph can be really useful.
has the weight difference been addressed? Also, how about shear strength? ie Lengthwise, which will sustain constant weight increments longest?
Hey, I have been trying to make an RC 3d printed plane but my PLA plane melted in the sun. Is there a better filament I should try? I was thinking carbon fiber but I don't know if it will be too brittle. It needs to be heat resistant and light or at least similar to the weight of PLA. Any suggestions?
I've seen alot of people using light-weight pla. Check out this video: th-cam.com/video/G3VlDR9KdGw/w-d-xo.html&ab_channel=TroyMcMillan
so filling regular print with epoxy is better than carbon printing?
It souls be ideal not only measure the load capacity but how much it bends and if it returns
I can't concentrate on the video when you're playing Lonely Troutman II in the background. :D
Can you laminate the two materials in layers?
wonder if that middle groove affected it.. or what if it was on its side.. depending how it was printed.. it could be stronger if the strands are in a different position .. but idk
Do u have metal 3D printer (SLS) ??
Could you make a composite beam of the PLA and the Carbon fibre material?
I used to print with PLA carbon fiber but after using other filaments I realized how bad it really was. I feel like parts with relatively thin walls, like 2.5-3.5mm crack/split extremely easily, and layer adhesion isn't that good either. But I upgraded to NylonX with the nylon and carbon fiber mix, and that stuff is the best filament I've used in my opinion as long as it's kept dry. I think you get the best of both worlds combined as far as the strength of the part, and the flexibility. It is somewhat flexible and very strong from nylons property's, but the carbon fiber keeps it a little more stiff, and also makes the part a bit stronger and rigid. I've printed parts with thin walls and tested the strength by hitting them with a hammer and they were fine, only with small indents from where the hammer hit. But great video, very detailed and informative!
You are the only person who made me want to get something of yt
1. A beam doesn't lay wide face down normally. 2. The notch out in the middle is a stress raiser. 3. Look up "Second Moment of Area" to understand beams.
Apparently if glass didn't break it would also be the most bouncy material. Like watching a glass ball fall next to a rubber one is pretty interesting.
I always wonder if a carbon print can block magnetic fields or radio frequencies. This can be very useful when designing a case for electronics that needs to block those outside signals. Any thoughts on this?
Doubtful as the carbon fibre pieces are short. The printer part isn’t conductive so it’s doubtful that it would block rf
well, this filament contains finely grinded particles of CF
try some filament with chopped ones, or even contionous fiber - I use that technology to produce parts stronger than aluminium :) (on a Markforged Mark 2 printer if you are curious)
is this true
@@TurtlenaideYes, even without continuous fiber CF-PEI has a tensile strength of 145mpa compared to pure aluminum's 90.
@@markthompson5983 where can I buy the material
What is the electrical resistance of the printed carbon part?
@@Turtlenaide you need a high temp printer for cf-pei You can get that from 3dx tech, same with carbon fiber nylon
Carbon Fiber what though? CF Nylon? CF Polycarbonate? CF PLA? CF PETG? They ALL have very different properties... There's no such thing as pure carbon fiber filament for 3D printing. Even all the carbon fiber filled filaments are only AT MOST like 20% carbon fiber.
awesome content!
Great video !
What if you print the beam so that it’s stressed along x or y rather than a?
you should do a strength test on a heath bar.
Is the carbon part electrically conductive?
Any chance of doing a comparison between Nylon X Carbon Fibre and Nylon X Aramid?
It would be cool if we could use both filaments and laminate them for a part. I’m sure that strength test would be interesting.
Could you try a carbon fiber/pla composite
Reminds me of knife making. They often will put a softer metal on the spine and a more brittle metal on the edge so you can get the best of both worlds
how do they do that? do you have a direct link to a video with the timestamp embedded in the link?
As a civil engineer, I can say that your explain about strength is a little bit short but it's very good 👍🏻
¡Impresionante video! Ver cómo esa pequeña pieza en forma de biga puede soportar 18 KG de peso en su centro es asombroso. ¡Un gran avance en ingeniería que demuestra la resistencia y el potencial de los materiales utilizados!"
Comentario en inglés:
"Awesome video! Watching that small beam-shaped piece withstand 18 KG of weight at its center is truly mind-blowing. A significant engineering advancement showcasing the strength and potential of the materials used. Great work
What would happen if you sandwiched layers of each?
My pla snapped always. Why yours didn't?
Wait what about the area underneath the curve! Its really important
Here is a graph, it may look very compicated:
**graph is a single squiggly red line**
Very cool.
Do a video where you mix the materials that should give it the strength of both materials
I'm sorry, but you are incorrect... I'm not sure if you were confused about what you were saying, but at three minutes you said "let's test the most commonly used material - pla..." You then proceed to say that PLA is "extremely ductile, basically it is the opposite of brittle, it doesn't snap."
This is INCORRECT. PLA is extremely brittle. Materials like PETG and ABS are substantially more ductile than PLA. Don't take my word for it though, go look research yourself!
If you really did use pla and it bent like that there are several things that could've contributed to it - poor layer adhesion, too high or low of print temp, orientation, amount of moisture in the material, etc. It appears as though the orientation is the same, so I suspect poor layer adhesion. My indicator is seeing the individual "stands" as apposed to the blending of the layer lines when you bent it.
In practice cf "based" pla is "usually* a bit weaker when it comes to other vanilla pla materials,*unless* you utilize a pla that contains stranded carbon fibers which have been oriented in the direction of the filament. This type of cf pla is substantially stronger, very hard to get ahold of and around 8 times the price of your "off the shelf" cf pla filament.
Sorry to call you out, but this is quickly validated.
The carbon infused filament was HT-PLA. Was pure HT-PLA used for the comparison or just regular PLA? I believe it has been demonstrated repeatedly that introducing fiber contaminants into the filament simply makes it more brittle. Actual carbon fiber derives it's strength from the linear weave of the material. You wouldn't glue together a pile of carbon dust.
I suggest buying more PLA and repeating the test. Most PLA would snap catastrophically with little bending. It looks like you are showing PETG or a Tough PLA which is more ductile. This is not representative of most people's experience with regular PLA.
Wow so Interesting
He just be drilling into tables
im glad that you explaned the diffrent types of failure modes, unfortunately you didn't actuay give any real information on the streginth of each print material.
In what world doesn't PLA snap? Did you use PETG?
Hi I'm a teacher that would like to replicate this at school. I'm wondering if you 3D printed the red stand that you're using (if so, where could I get the file?), and where you got the silver rods that are placed on top of the red stand?
Print a sample in "Essentium HTN CF-25" you will be blown away how both strong, and stiff that material is.
Sees glass.....Squid game flashbacks..
Polycarbonate is a nonlinear viscoelastic material.
You made with a drill two holes on your test bed. This created a triangle with your Para. A slot would allow the Para to be free pull. Para has a stretch too. Using a metallic "Hook" or something that will not stretch within the range of the limits would be more accurate.
I know if you do a vid like this all the Einsteins come out, I'm not breaking your you know. Just observing. Thank you for taking the time to make this.
Carbon fiber or carbon fiber reinforced nylon?
PLA is much less ductile than ABS & PETG
well no a rubber band does not ALWAYS snap back to its original position
it weakens over time and its resting state becomes more and more stretched
I have long hair and use rubber bands too and I go through like one a month because they loosen over time
But what kind of carbon fiber material is it? CF PLA? CF PETG? CF Nylon?
Your experience with the white PLA is the exact opposite from me and I expect most others here that print standard PLA regularly. Standard PLA is considered very rigid but brittle. I'm going to assume you used some form of PLA Plus or some other modified PLA that makes it more ductile. Also, You didn't mention in the video anywhere what type of CF filament you used. I did notice however in the description that it is Proto Pasta CF-PLA. Might I recommend trying Atomic CF-PETG or 3DXTECH CF-PETG. It is much more popular for structural, functional prints than CF-PLA and has a proven track record not to have just carbon dust mixed in. I like the concept of your video but I'm afraid it's misleading in many respects. Please don't take this to be discouraging, just sharing my two cents.
Good points! This is "regular" PLA. Many common PLA brands have added toughening agents to reduce brittleness. (Overture Matte White PLA) I would love to try out some other Carbon Fiber filaments that are designed for more structural applications. Thanks for the suggestions!
In a real use situation, nobody would just have a straight beam like that. It would be reenforced for the purpose of holding weight.
That’s not PLA you got there it must be PLA+. PLA snaps, it’s also very strong, low ductility.
Most PLA nowadays is very ductile, even if it's not labeled as PLA+
However, it does vary widely by manufacturer.
Drinking game if you want to get hammered very quickly: Take a drink of your preferred alcoholic beverage each time the narrator says the word "actually". Good luck with your hangover...
PLA is ductile?
This brand is very ductile (Overture PLA). They must be adding some sort of toughening additive
Hymmm that's weird. PLA is normally brittle. Are you sure that wasn't PETG?
why put a notch on the crbn fibr beam which can easily lead to breakage
As said in the video, to have a controlled failing point. In material testing it is important to have a standardization to compare different materials to each other.
Yes, the unnotched part would hold more weight (and as such force) but it could basically break everywhere on the beam. It usually would still break in the middle where the weight is applied as there is the biggest momentum on the material, but inhomogencies in the material can lead to another failure point if severe enough.
Usually an unnotched sample is used for three-point-bending (which is shown in this video) but as the force here is applied through actually pulling the sample (instead of pushing it from above in a normal three-point-bending test) I can see why one would like to have a stable failure point to hold the rope in place.
Also when using a notched sample you usually then normalize your force-displacement-diagram (which is also shown in this video) to a stress-strain-diagram which shows the material's mechanical properties independent of its actual form, hence the loss of strength from the notch becomes moot as you get the actual material properties instead of something that relies on the form of the sample. :-)
The first thought I had was: what if you combined the who, and make Carbon rebar reinforced pla? The combination might bring out the best of both worlds. Might be hard to implement tho. Do the carbon structure first, then fill in with pla?
That’s probably what he is using. Actual 3d printed carbon fiber requires a printer that costs more than a car
Interesting how your voice sounds like Olmeca Gold's...
What material are these parts....? PLA? PETG? Nylon? This makes a huge difference to normal people lol.
Have an idea / theme for a future project or video? Leave your ideas below!
3d printed hotwheels track ;). (i know it's in the works )but I'm from Europe so😭😭😭😭
Print a part with carbon pla and add regular pla so it will be strong and elastic maybe :)
A CUTE CAT!
The true strength in carbon fiber is its unilateral strength you can engineer with the geains of the fiber and the shape of the piece.
That little "arch" you designed in for the rope was a compromising point and didn't need to be there. The rods would have broken where you were pulling them from regardleas of that cutout arch or not, but it worked against the natural benefits of carbon fiber
Works to show which is stronger with less effort
As a rule of thumb, the pricier the filament, the better... 😁... But then again, who uses gold as a filament.... 😁
lol, how can you 3d print carbon fiber?
Basic engineering 101. Once the material yields it has failed.
PLA isn't brittle? That's pretty much the opposite as what my experience is. PETG or especially nylon, that's sh*t bends
It would be interesting to test carbon fiber filament against aluminum
Carbon fiber pei vs aluminum
Try cool it in liquid nitrogen
i would not say the carbon fiber is stronger. analyze the data further and youll see that the PLA has a greater area under the curve, i.e greater toughness. The carbon fiber in retrospect MAY be more resilient but one would need to calculate and compare those areas of yield and elastic deformation. For example, we can all agree ABS is a "stronger" plastic right? Well that is simply because it yields more that PLA and overall is tougher before plastic deformation, the point of no return when damage has taken place.
It may be tougher but in this video I am comparing strength. Strength indicates how much force the material can support and toughness is how much energy a material can absorb before rupturing.
@@3DPrinterAcademy very good point
This got my imagination going the
Well Well Well then let's find out
Is 3D printed Carbon Fiber weaker then normal carbon Fiber ? I really wanna know
Ok put how many tables do you go through
This table is immortal
Table merch coming soon 😂
The twin towers failed elastically, "Beams Melted" then catastrophically "Towers came down violently on themselves". 🤷🏻♂️
Strength.... is a common term. BUT different strengths, counter different forces, from MANY types of angles/planes. Glad you point this out. CF nylon with annealing is different too. Also dry vs water logged... So many variables people! Also...PLA is USUALLY very rigid and NOT Ductile....weird... looks more like nylon of PETG to me...
you are using pla plus not pla, pla alone is brittle and easy to fails with brittle cracking