carbon fiber experts?? |
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carbon fiber experts?? |
r_towle |
Jan 26 2006, 05:00 PM
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#21
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Custom Member Group: Members Posts: 24,591 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
So,
Carbon fiber is 6 times stronger than steel. here are my thoughts. take off the outer rocker. Fix the rust with new steel. sandblast the area Lay on a layer of CF directly to the inner long front to back, wrap in to the bottom and top horizontal layers. when using CF and bonding it to steel, I have read that you would use an epoxy resin to bond it directly to the steel, so it would be the same as putting por 15 on steel (por 15 is an epoxy layer) So, thoughts? plus, minus? Rich |
Brian Mifsud |
Jan 26 2006, 05:44 PM
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#22
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Mechanical Engineer Group: Members Posts: 981 Joined: 3-March 03 From: Penngrove, CA Member No.: 384 Region Association: None |
If the bond isn't excellent, I suspect there is no benefit and its a waste of time. Epoxy will pop loose and the carbon fibers will never do any of the load sharing. The thermal expansion coefficents of each material are different enough that there will be relative movement between the two, even with the car sitting and no preload on the CF.
Of course.. carbon fiber and aluminum are commonly bonded together in racecars and mountain bikes.. so somebody out there has figured out how to bond them, I just don't think it's with the commonly available epoxies. you could always make up a test specimen, bond it, then torture it. That would really be the only way you'd have any confidence in it. If you have any aspirations to put it on the INSIDE of the car, better slap a layer of kevlar over the Carbon Fiber. When carbon fiber/epoxy break from impact, you have shrapnel. The kevlar keeps the shrapnel away from the human body.....I'm still picking pieces out of my forearms before we learned this trick back when. |
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