I do think that a new class of semiconductor, or a vastly stronger material like what nanotubes or graphene or even optimized carbon fiber could achieve, or a breakthrough practical superconductor, would have enormous impacts. Perhaps similar in scale to plastic or glass
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Replying to @DanielleFong @LauraDeming
Well the vast improvements in structural efficiency will not come from something like a carbon nanomaterial, but from manipulating carbon fiber composites at the mesoscale (few millimeters). Wrote about it here. http://www.mantiscomposites.com/documents/jec2.pdf …
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I don't think the initial question was well posed if advanced materials with large impacts was the desired response since too open-ended to be meaningful. If it's a poll asking whether materials will continue to represent a large portion of economic growth I'd vote yes.
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Replying to @mchapiro @LauraDeming
"come from something like a carbon nanomaterial, but from manipulating carbon fiber composites at the mesoscale (few millimeters)" i've thought the same thin, but others have reasons to think advances from the nano end have promise. not sure of either
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Replying to @DanielleFong @LauraDeming
Zero known ways of making 100% nano-reinforced composites that come anywhere close to the strength and stiffness of microfiber composites. Nor am I aware of any plausible routes.
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I don't think you could find someone working on any nanomaterial that would tell you they are working on something that could take a machined titanium aerospace part and replace it with something that weighs half as much.
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Replying to @mchapiro @LauraDeming
present day carbon fiber composites can achieve this, So I’m assuming you’re talking about the shortfalls of existing macroscopic performance of pure nano based composites, on which I don’t dispute you, I just think that breakthroughs may be possible
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Replying to @DanielleFong @LauraDeming
They certainly cannot or those titanium parts would not be flying (you might have stiffness-dominated aluminum parts not yet replaced with a chopped fiber composites). Composite *laminate* structures are ill-equipped for intricate geometries with many fastener locations.
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Replying to @mchapiro @LauraDeming
not really "an efficient market" for mechanical components yet, but you're right that chopped fiber composites aren't great. Composite laminate structures are more limited yes but more complex geometries are possible Arevo Labs is doing remarkable things. https://arevo.com/ pic.twitter.com/yow46JIE9F
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Replying to @DanielleFong @LauraDeming
Well, yes, if you include stuff that's starting to get commercialized Mantis Composites estimates 70% typical weight savings over machined metals. Alas, Arevo does not know what it's doing and is cringeworthy. I can't go too much into their poor understanding of the markets...
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what's wrong with it
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Replying to @DanielleFong @LauraDeming
Automated fiber placement has 5-axis control, but the end-effector is not a slender nozzle, which further limits mobility. 5-axis is needed for the slightest contours.
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