strengths and relevance

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strengths and relevance

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coleio	coleio posted 11 Years Ago HOT Topic Details
Group: Forum Members Posts: 68, Visits: 285	some of you have probably seen me floating about the forum, asking silly noob questions so heres another one for you. i recently found a page that compared strength of carbon and kevlar as far as i can remember it was on two planes, rigidity and flex. or something to that effect anyhow. i cant find the page but it stated that kevlar was about 20percent less rigid but much much better when it came to breaking points and flex. so, after reading this and thinking about it for a while, taking costs into account i thought of removing carbon from the equation and going for a combination of kevlar and fibreglass. looking into it a bit more i came across this page which goes into much more detail than the first i came across http://www.performance-composites.com/carbonfibre/mechanicalproperties_2.asp so my question here is how much of these details are really relevant? i was going to look each one up but thought id ask here first. i know that with the use of kevlar, woven fibreglass and a good core material like soric sf2 i can make a product better than many aftermarket cf panels. is my thinking wrong here? Bear in mind there are some atrociously poor quality carbon panels out there oh, the application is car panels by the way, bonnets, bumpers etc... thanks guys
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coleio	coleio posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 68, Visits: 285	couldnt agree more wozza. my head is wrecked trying to decide which materials and composition to use. at the end of the day its my name on the product. i had started off with the idea of 1 outer layer carbon/kevlar, reinforced with heavier carbon fabric and soric. then i was thinking a layer that goes carbon 200gsm kevlar 200gsm then soric and carbon 600gsm then there was this brain fart above. i think ill settle with carbon outer skin with fibreglass and soric reinforcing but that leaves the splintering problem. is there a really cheap material i could add to this mix to reduce the chance of splintering? without adding much weight?
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wozza	wozza posted 11 Years Ago HOT Post Details
Group: Forum Members Posts: 688, Visits: 5.4K	coleio (17/03/2014) couldnt agree more wozza. my head is wrecked trying to decide which materials and composition to use. at the end of the day its my name on the product. i had started off with the idea of 1 outer layer carbon/kevlar, reinforced with heavier carbon fabric and soric. then i was thinking a layer that goes carbon 200gsm kevlar 200gsm then soric and carbon 600gsm then there was this brain fart above. i think ill settle with carbon outer skin with fibreglass and soric reinforcing but that leaves the splintering problem. is there a really cheap material i could add to this mix to reduce the chance of splintering? without adding much weight? Soric or 3D Core is your friend in this situation. It will reduce the chances of splintering, increase the strength to weight ratio and if you a planning on using infusion then you won't need flow mesh in the stack, well not all over. For a core to work at its best it really needs to be sandwiched between equal layers. If you can try and balance the weight of reinforcement either side of the core. Warren Carbon Copies Ltd Edited 11 Years Ago by wozza
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strengths and relevance

coleio - 11 Years Ago

These properties should really be treated as indicative measures only IMO. Far too much will depend...

FLD - 11 Years Ago

[quote][b]coleio (17/03/2014)[/b][hr] some of you have probably seen me floating about the forum,...

wozza - 11 Years Ago

couldnt agree more wozza. my head is wrecked trying to decide which materials and composition to...

coleio - 11 Years Ago

[quote][b]coleio (17/03/2014)[/b][hr]couldnt agree more wozza. my head is wrecked trying to decide...

wozza - 11 Years Ago

yeah i had thought about the equal fabrics either side of the core. would really annoy me if it was...

coleio - 11 Years Ago

[quote][b]coleio (17/03/2014)[/b][hr]yeah i had thought about the equal fabrics either side of the...

wozza - 11 Years Ago

[quote][b]wozza (17/03/2014)[/b][hr][quote][b]coleio (17/03/2014)[/b][hr]yeah i had thought about...

coleio - 11 Years Ago

[quote][b]coleio (17/03/2014)[/b][hr][quote][b]wozza (17/03/2014)[/b][hr][quote][b]coleio...

wozza - 11 Years Ago

Well it would be roughly 1mm on top of your core thickness. Give or take. So if you're using 2mm...

Hanaldo - 11 Years Ago

yeah but i would prefer to have one single piece. besides fg is so so so cheap in bulk. i dunno, i...

coleio - 11 Years Ago

depending on the part, resin, end use etc, you could infuse the outer layer to get your finish then...

ChrisR - 11 Years Ago

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