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Engineering Materials

SABIC & Kringlan Develop Carbon Composite Wheel

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a.saji
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Re: Process and materials
a.saji   7/31/2014 6:00:26 AM
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@davidmac: Well cost wise it might be feasible but what about the returns ratio ? That too is important. 

davidmac
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Iron
Re: Process and materials
davidmac   7/30/2014 7:26:41 PM
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The only issue I see is with potholes. An aluminum wheel will likely bend, but if you were to hit a very big pothole that completely collapses the tire then the composite is more likely to crack than bend. I'm all in favor of the composite. Heaven knows how many corroded alum. wheels I've had to have fixed to stop from leaking around the rim. No more of that! I hope they are cost effective enough to replace the alum.

Ann R. Thryft
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Re: Reducing Caron Footprint
Ann R. Thryft   6/30/2014 12:57:09 PM
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far911, thanks for that interesting input on friction, braking, etc. As usual, the use of carbon fiber composites vs metals is worth the great expense in applications where weight savings are paramount, such as aerospace, and increasingly in automotive as well.

Ann R. Thryft
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Re: Reducing Caron Footprint
Ann R. Thryft   6/30/2014 12:56:22 PM
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Greg, unfortunately, weight and diameter were not mentioned. But carbon fiber composites are well known to be both lighter than metals and also to have a strength-to-weight ratio higher than metals, including aluminum.

far911
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Re: Reducing Caron Footprint
far911   6/28/2014 2:42:56 PM
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I am sure lots of appliances will be benefitted with this research.

far911
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Re: Reducing Caron Footprint
far911   6/28/2014 2:38:48 PM
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Aluminium and other metals transfer heat quite well, but carbon fibre does not. As a result, wheels with carbon fibre rims do not brake as effectively as wheels with metal brake tracks. These characteristics of composites give full carbon wheels two primary advantages over wheels with an aluminium brake track bonded to a deep carbon fibre rim. The first, and more important of the two, is the aerodynamic shape. Weight is the second advantage of a full carbon wheel over an aluminium and carbon fibre combination.



Greg M. Jung
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Platinum
Re: Reducing Caron Footprint
Greg M. Jung   6/28/2014 9:40:20 AM
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Jerry, good point on the weight of aluminum vs. CF.  I would also be interested to see the performance comparisons between wheels using the different materials.

One other consideration could also be making the spare wheel from CF (possible additional cost reductions).

Jerry dycus
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Gold
Re: Reducing Caron Footprint
Jerry dycus   6/28/2014 9:09:22 AM
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 Is it actually lighter?  They didn't bother to say what it weighed. 

Fact is 14'' alum ones like I have only weigh 12lbs and as a composites person fail to see how they can beat that.

Unless they are using long fibers which is unlikely, just waste very short CF fibers  mixed with resin are unlikely to be much better than alum or even fiberglass.

likely just another CF hype of better performance through advertizing so engineers, marketing can justify their paychecks.

Now if they actually use CF fabric they might shave a lb or 2 at great costs.  Again not worth it.

Ann R. Thryft
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Re: Reducing Caron Footprint
Ann R. Thryft   6/26/2014 12:12:43 PM
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Danyal_Ali, I thought it was interesting that appliances such as washing machines were mentioned as benefiting from this R&D.



Daniyal_Ali
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Platinum
Reducing Caron Footprint
Daniyal_Ali   6/25/2014 2:35:54 PM
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This is great. Not only will this help in reducing the inertia of devices but will also considerably increase the efficiency and thus provide energy efficient solution for various devices. Moreover the reduce in the weight is a huge plus for the industry appliances, as the material is equal in strength to metal but comparatively less heavy.

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