Carbon/Flax Hybrid Structures

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stevegreen101
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Interesting article, especially for those that like a little bit of carbon fibre...

"A UK-based consortium has developed carbon/flax hybrid structures with lower cost, higher vibration damping and improved impact behaviour compared to carbon fibre.

The CARBIO project, led by Composites Evolution, has produced hybrid composites using layers of flax fibre and carbon fibre which have equal bending stiffness to all-carbon laminates, but with reduced cost, increased shock absorption and improved environmental impact.

The project has designed and manufactured a prototype automotive roof which combines the high strength and aesthetic appeal of carbon fibre with the low cost and vibration damping performance of flax. The prototype roof will be on display at the JEC World 2016 show on 8-10 March in Paris.

In addition, the carbon/flax micro-sandwiches have recently been shown to perform very well in automotive sled impact tests. A 50/50 carbon/flax hybrid crush structure was found to have equal specific energy absorption to an all-carbon structure, whilst exhibiting a safer mode of failure.

Brendon Weager, Technical Director at Composites Evolution, explains “we already knew that Biotex Flax could be used to reduce the cost and vibration of carbon fibre parts, but these outstanding impact test results came as quite a surprise to the R&D team! These low cost, fail safe hybrid crash structures will be of significant interest to automotive and motorsport engineers.”

An alternative approach is to create hybrid fabrics, where the carbon and flax fibres are co-woven to provide tunable performance, vibration damping and unique aesthetics at a lower cost than pure carbon fabrics. One example is Biotex Flax/Carbon 180g/m2 2x2 twill, a drapable hybrid fabric designed for complex structural and decorative parts in the automotive and sports sectors.

Hybrid flax/carbon spread tow fabrics are also possible. These offer superior properties due to the high degree of fibre alignment and low crimp, alongside highly attractive aesthetics, and are already being tested by manufacturers in the snow and water sports sectors.

Composites Evolution will be exhibiting its range of Biotex Flax/Carbon hybrid fabrics at JEC World 2016, Paris, 8-10 March (hall 6, stand M66). The CARBIO carbon/flax hybrid automotive roof will be on display in the Auto Planet showcase area.

The CARBIO project is part-funded by Innovate UK and the partners are Composites Evolution, SHD Composite Materials, KS Composites, Delta Motorsport, Jaguar Land Rover and Cranfield University."

http://www.netcomposites.com/news/2016/ ... behaviour/
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<@¿@>
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Cool stuff... I din't know about that. Thanks for sharing.
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jonnyfox
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I've gone off Carbon, I'm reformed :-)
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ade
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jonnyfox wrote:I've gone off Carbon, I'm reformed :-)
Is there a program for that?

"My name is Adrian and I have not bought any carbon for 345 days"
AndyD
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A lot going on about CF and composites for Automotive right now, all about lightweighting as that is hot focus topic right now.
I'm off to Korea on Sunday to discuss this process with Hyudai

http://www.ptonline.com/articles/the-ne ... innovation
stevegreen101
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I read that article, understood very little and have retained even less; but I'm sure it's all positive :clap:
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jonnyfox
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stevegreen101 wrote:I read that article, understood very little and have retained even less; but I'm sure it's all positive :clap:
:lol:

Further than I got :D
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stevegreen101
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:D I just have more time on my hands
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jonnyfox
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stevegreen101 wrote::D I just have more time on my hands
Dude! It's almost track day season, lets ***k up that Exige and start a refresh in November :clap:
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TarmacTerrorist
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Hardly ground breaking stuff imo, how long has carbon fibre been available? It's really taken this long for someone to come up with the idea of introducing different fibres into carbon to effect it's overall properties...

Far more interesting was Lotus's panels made from hemp fibres. Grow your own car in a feild!
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