Engineering Stack Exchange
Engineering Stack Exchange

Questions tagged [carbon-fiber]

30 questions
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How can I stop carbon fibre mat from fraying?

I want to use a woven carbon fiber tube in cloth form to act as an acoustic absorber in a 40 mm internal diameter pipe. The bad news is that it has to carry a variety of solvent/air mixtures at temperatures up to 80 °C. When it is cut to length the…
Dirk Bruere
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Why is the open-front bike stem design so widespread despite that it may be inferior to the closed-front design?

Context Even major bicycle corporations have the occasional product recall on handlebars. It's easy to see why. The bike itself is a gentle, light, and nimble ~10 kg (for a road bike) object, whereas the weight of the brute riding it is anywhere…
Sam7919
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What are the claimed advantages of using Carbon fiber for a pressure hull?

Much of the news around the Titan incident has focused on all the reasons that carbon fiber was a bad choice for the hull, but I've yet to see any discussion as to why it was chosen at all. Was it chosen because the designers perceived there to be…
BCS
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Fuzzy texture in soildworks

Is there a way to add a "fuzzy" texture to a body in solidworks? Something like this: The purpose - to 3d print a body with a fuzzy surface to get better bonding Any other ideas to improve the bonding surface will be great (fiberglass -> epoxy ->…
Simon
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Carbon Nanotubes as muscles?

I was wondering why carbon nanotubes are not used as artificial muscles yet? I mean they behave similar to real muscles, only that they expand horizontally. What are the current challenges that researchers are facing?
John Doe
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Is triaxial carbon fiber gimmick?

Is there any benefit to using triaxial weave pattern instead of common twill?
wav scientist
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How is a carbon fiber chassis made one piece?

How is such a one piece car chassis from carbon fiber made at one piece? Do they make the parts individually and bond it some way that it is extremely durable bond? What bonds are really durable for carbon fiber that they can allow for carbon fiber…
user2789433
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Is it possible to prove that applied forces to a bicycle top tube are worse than a seatpost when using a repair stand clamp?

This stems from the idea that you should use a bike stand clamp on a seatpost, if you can, for carbon fiber (CF) bike frames. Hopefully, this would avoid the cracking of a CF bike frame. In order to prove that it's safer to clamp on a seatpost vs. a…
cocobutters
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Cutting carbon fiber plate with a sub-mm end mill

I have a 2 mm thick high-quality carbon fiber composite sheet. I want to cut a shape in it with a 0.8 mm diamond flute end mill. I need a cut this narrow because of the shape's detail. The shape's total cutting length is about 30 cm, cut depth 2.1…
scriptfoo
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How do I calculate the strength of a carbon fiber tube?

I am not a mech engineer and have been struggling with this for a while, I feel like it is pretty straight forward but I'm missing something. The problem is a horizontal tube that is supported at one end with the weight on the other end. My specs…
Joshua von Damm
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Best DIY material for a high-torque cog or gear?

I am making a gear/cog to attach to a high torque stepper motor. I can realistically make it out of the following variety of materials: 3D printer PLA/PLA+ etc. layered PLA/PLA+ and fiberglass made with high strength epoxy ply wood ply wood with…
Chris
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Can carbon fibre be injection molded?

I found very little information about that, but it says that its technically possible, but then why it isnt used instead regular carbon fibre machining? It sounds way easier...
Name
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Database for stiffness matrix?

I have searched everywhere for the stiffness matrix of GFRP, but there isn't a single paper or site that experimented the full matrix. Is there any sort of database for the stiffness matrix of many composite materials?
Andy_ye
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Why do they vacuum pump the carbon fiber fabric?

I have seen plenty of YouTube videos in which they use carbon fiber fabric to build various things. One such channel is Mike's Patey's channel where he makes amazing aircrafts from carbon fiber. In these videos I usually see (but not always) that…
Efthymios Kalyviotis
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What steel to use? What thickness and width? What angles to use?

I am trying to develop my own spring steel version of a carbon fiber running blade that you might see in the paralympics. Except mine is for someone who still has their foot/leg. Nothing like that exists and out of necessity I am trying to develop…
Jeff Block
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