Nitpick time: > Modern composites, starting with Bakelite AFAIK Bakelite is a resin, not a composite. No mention of fiberglass, which had been used for many decades before carbon fiber went into widespread use. > composites—which are amalgamations of a variety of fibers, embedded in a variety of plastics Steel reinforced concrete is a composite and doesn’t fit this definition.
A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
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Re: A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
#62Why aren't more regular cars made of carbon fiber? Especially with EVs needing to be as efficient as possible. The BMW i3 had a carbon fiber frame and was still reasonably priced back in 2013, yet no other normal cars seem to have went this way.
Re: A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
#63Earlier quoted context omitted.
I looked it up on Wikipedia ( https://en.wikipedia.org/wiki/Bakelite ) which said: > Because molded Bakelite incorporated fillers to give it strength, it tended to be made in concealing dark colors.[9]
In older style corded land line phones, the body was made of black bakelite, in India.
Re: A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
#64Nitpick time: > Modern composites, starting with Bakelite AFAIK Bakelite is a resin, not a composite. No mention of fiberglass, which had been used for many decades before carbon fiber went into widespread use. > composites—which are amalgamations of a variety of fibers, embedded in a variety of plastics Steel reinforced concrete is a composite and doesn’t fit this definition.
Re: A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
#65Were the soviets that far ahead? Because the T3 trams from the 60s were already made of composites.
Re: A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
#66Re: A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
#67Why aren't more regular cars made of carbon fiber? Especially with EVs needing to be as efficient as possible. The BMW i3 had a carbon fiber frame and was still reasonably priced back in 2013, yet no other normal cars seem to have went this way.
Because it doesn't make a lot of sense to invest heavily into saving 100kg on the frame and then adding a 500kg battery. The i3 had a small, lighter battery and an extender.
Re: A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
#68Earlier quoted context omitted.
Because it doesn't make a lot of sense to invest heavily into saving 100kg on the frame and then adding a 500kg battery. The i3 had a small, lighter battery and an extender.
If your frame is 100kg lighter doesn’t that mean you can get even better mileage out of your battery? Or, for the same weight, fit even more battery?
Re: A New Age of Materials Is Dawning, for Everything from Smartphones to Missiles
#69One of my biggest everyday QoL upgrade is men's casual pants finally getting elastane. E: not just elastane but performance fabrics from athleisure in general, good moisture/odour/temperature control, easy to maintain etc. Some people like break in into their cotton/denim classics, but performance fabrics tend to not need break in in at all.