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Counting on Carbon to Build Stronger Composites

Posted October 18, 2016 12:00 AM by Engineering360 eNewsletter

Use of composite materials grows dramatically because of the potential to produce stronger, lighter components that outperform parts made from metals. But most composites have a glaring vulnerability that traditional and advanced metals don't — the potential for cracking with stress or impact. Two recent projects from MIT have found ways to increase the mechanical strength of composites. One is based on stacking layers of graphene and resin. The other is based on stitching composite layers together using carbon nanotubes as thread.


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Guru

Join Date: Jun 2009
Location: South of Minot North Dakota
Posts: 8376
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#1

Re: Counting on Carbon to Build Stronger Composites

10/19/2016 5:07 PM

I for one have always been a bit sceptical of reducing weight while increasing strength of the materials used especially in mobile applications like vehicles or machinery.

A lot of the hidden performance and safety behind such applications resides entirely in the fact they have mass and have it properly proportioned to the size and shape of the vehicle.

I hate driving small lightweight vehicles due to their light feeling ride and overwhelming tendency to not handle cross winds or gusty winds at all due to the simple fact they don't have sufficient mass to fight back so to speak.

Just ask any truck driver who has ever drove a large box trailer loaded and empty in a crosswind or gusty wind conditions.

Although the aerodynamics are identical the ride quality, stability and handling between weighing 25,000 pounds empty VS 80,000 pounds loaded are two totally different driving experiences where the being at the light end of the scale is a rather unstable stressful driving experience to say the least.

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