carbon and grp hybrid laminate

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carbon and grp hybrid laminate

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benet	benet posted 12 Years Ago HOT Topic Details
Group: Forum Members Posts: 59, Visits: 373	Hi all In the interest of increased rigidity in a panel........ Ive been producing skateboards using a 10mm wooden core with 600 weight plain weave glass fiber skins top and bottom. They work pretty well. However i have seen boards using a carbon skin on the underside which is done with the intention of increasing stiffness. I was wondering about this and thought that, given in my case the core is skinned top and bottom and that grp is generally stronger in elongation than compression i would be better of if i skinned the upper side of the board in 450 carbon and the underside still with 600 grp. My thinking is that i would have a better balance in the strength of the skins ( the upper being stronger to withstand compression the lower being slightly weaker but effectively strong in elongation) and hence a stiffer board than if i just skinned the bottom in carbon and left the top in grp...? Im wondering if the use of carbon on the underside of a skateboard is more about aesthetics (as its on show, the top normally covered in grip tape) and less about engineering. Any experienced advice much appreciated. Thanks Ben SkateCraft - Planks on skates Tags laminates carbon grp rigidity skins skinning stiffness
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benet	benet posted 12 Years Ago HOT Post Details
Group: Forum Members Posts: 59, Visits: 373	That might seem a little confusing. basically when standing on a composite board is it stiffer when its 1. 450gsm carbon fibre top / 10mm wood core / 600gsm glass fibre bottom or 2. 600gsm glass fibre top / 10mm wood core / 450gsm carbon fibre bottom all plain weave ? Ta
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Matthieu Libeert	Matthieu Libeert posted 12 Years Ago HOT Post Details
Group: Forum Members Posts: 955, Visits: 3.4K	It's a matter of compression and elongation tension in your sandwich composite (carbon/FG + wood) I'll probably be able to give you more information after I had my exam on structural engineering in 2 weeks :p In meanwhile someone els can maybe help this guy? Matthieu Libeert Founder MAT2 Composites X Sports website: www.mat2composites.com
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carbon and grp hybrid laminate

benet - 12 Years Ago

That might seem a little confusing. basically when standing on a composite board is it stiffer...

benet - 12 Years Ago

It's a matter of compression and elongation tension in your sandwich composite (carbon/FG + wood)...

matthieutje65 - 12 Years Ago

if you made ribs underneath it running longitudinally. hollow CF tubes bonded on would work. balsa...

brasco - 12 Years Ago

Thanks Brasco. I quite like the idea of ribs on the bottom they could also provide a nice bit of...

benet - 12 Years Ago

have you thought about using FG or Carbon fiber inbetween the layers of wood? before pressing the...

matthieutje65 - 12 Years Ago

@ Matthieu yes, i do that on some boards mostly foraesthetics and flex( the boards look nice with...

benet - 12 Years Ago

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