kevlar reinforced carbon fiber


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igs_au
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hi all, a quick question. Can I stick say 2 layers of kevlar in the between carbon fiber layers in the same wet layup? Making a guitar pedal board for my son. They stomp on it quiet hard so I thought I might reinforce it with something. Will the kevlar make a difference?

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oekmont
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This is not a case where Kevlar will make any sense. You want the pedal board to withstand the stomping, not to hold the sharp fragments together if your son stomps it into pieces. Kevlar doesn't make the parts stronger, it just makes them fail saver in high kinetic failure scenarios (motorsport). Even if your son stomps right through the board, there won't be enough energy involved to make things flight around dangerously.
If you just want to make things more stable, Kevlar won't make any difference, because it is much less stiff than carbon, and therefore won't take much load up to the point the carbon has reached it's maximum elongation. 

igs_au
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oekmont - 5/30/2019 4:32:45 AM
This is not a case where Kevlar will make any sense. You want the pedal board to withstand the stomping, not to hold the sharp fragments together if your son stomps it into pieces. Kevlar doesn't make the parts stronger, it just makes them fail saver in high kinetic failure scenarios (motorsport). Even if your son stomps right through the board, there won't be enough energy involved to make things flight around dangerously.
If you just want to make things more stable, Kevlar won't make any difference, because it is much less stiff than carbon, and therefore won't take much load up to the point the carbon has reached it's maximum elongation. 


excellent. thank you. It will probably make it even worse. Because if it's not as stiff as CF, the board will bend more easily which is not good at all. I need this as stiff as possible.

Fasta
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igs_au - 5/30/2019 5:52:05 AM
oekmont - 5/30/2019 4:32:45 AM
This is not a case where Kevlar will make any sense. You want the pedal board to withstand the stomping, not to hold the sharp fragments together if your son stomps it into pieces. Kevlar doesn't make the parts stronger, it just makes them fail saver in high kinetic failure scenarios (motorsport). Even if your son stomps right through the board, there won't be enough energy involved to make things flight around dangerously.
If you just want to make things more stable, Kevlar won't make any difference, because it is much less stiff than carbon, and therefore won't take much load up to the point the carbon has reached it's maximum elongation. 


excellent. thank you. It will probably make it even worse. Because if it's not as stiff as CF, the board will bend more easily which is not good at all. I need this as stiff as possible.

In this case you should use a real core material with some thickness like 20mm 200kg density PVC foam. How strong is your drummers leg?





igs_au
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Fasta - 5/30/2019 7:32:55 AM
igs_au - 5/30/2019 5:52:05 AM
oekmont - 5/30/2019 4:32:45 AM
This is not a case where Kevlar will make any sense. You want the pedal board to withstand the stomping, not to hold the sharp fragments together if your son stomps it into pieces. Kevlar doesn't make the parts stronger, it just makes them fail saver in high kinetic failure scenarios (motorsport). Even if your son stomps right through the board, there won't be enough energy involved to make things flight around dangerously.
If you just want to make things more stable, Kevlar won't make any difference, because it is much less stiff than carbon, and therefore won't take much load up to the point the carbon has reached it's maximum elongation. 


excellent. thank you. It will probably make it even worse. Because if it's not as stiff as CF, the board will bend more easily which is not good at all. I need this as stiff as possible.

In this case you should use a real core material with some thickness like 20mm 200kg density PVC foam. How strong is your drummers leg?


It's a gutar board. max length of about 460mm. Most pressure will be on one side on the wha pedal. 6-7 layers of CB should be enough for the thing not to bend inwards. I got 6k twill which is pretty think.

GO

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