Andrew Mountcastle na Twitteru: "38/ They envision PangoGear™ as lightweight, flexible body armor that, when paired with appropriate body-customizing software, could be printed on home 3D printers by consumers who need protective gear for various sports, motorcyclists, etc."

@amtcastle

I try to understand how insects fly, and why they're so good at crashing into things. Assistant Prof. at Bates College. Mainah.

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Andrew Mountcastle‏ @amtcastle 16. tra 2019.

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28/ Look for the Teflotrap™ in a hardware store near you* *pending successful trials with actual live mice in the near futurepic.twitter.com/mTkyF8zecB

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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29/ And finally, I present PangoGear™, flexible, lightweight and customizable body protection inspired by pangolin scales.pic.twitter.com/Tq7pK3YU9u

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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30/ This group, henceforth called the "Pangoliers", started off with a completely different idea that didn't get off the ground for various reasons (a common experience in research!), so they regrouped and decided to explore this question with the limited time they had left.

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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31/ Pangolins are anteaters native to Africa. They have large, tough keratin scales that cover their skin and serve as protective armor. They can curl up into hard little meatballs when lions and other predators attack.pic.twitter.com/P0Y5zRnafj

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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32/ The Pangoliers were impressed with this form of body armor, which was both extremely tough and highly flexible, and wanted to design something similar for human use.

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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33/ So they used our #Formlabs 3D printer to print out a bunch of #bioinspired scales that would nest perfectly together and overlap one another.pic.twitter.com/JtEsZIjFxN

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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34/ The scales were individually glued to a thin sheet of silicone, which allowed for overall flexion of the layup. They discovered that increased spacing between each scale yielded greater flexibility, but wondered whether there was a tradeoff between flexibility and protection.pic.twitter.com/rZw98QsIPV

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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35/ To test the puncture resistance of different scale designs, they dropped a weighted spear onto scales from increasing heights, and measured the momentum required to break the scales. https://www.youtube.com/watch?v=TtsUx0-aAlQ …

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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36/ (BTW, thanks to those who offered suggestions before on how to measure puncture resistance: @invertenerd @kenaley @EC_carrington @JacobPeters10 @TomDoesScience @robincoope @toadooo. Due to severe time constraints, we settled on this relatively simple test.)

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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37/ The Pangoliers discovered that it required a greater momentum to break smaller scales (not surprisingly), but that this difference was due not only to the size of the scale that was struck, but also to the area over which the force was distributed to the underlying scales.

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Andrew Mountcastle‏ @amtcastle 17. tra 2019.

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38/ They envision PangoGear™ as lightweight, flexible body armor that, when paired with appropriate body-customizing software, could be printed on home 3D printers by consumers who need protective gear for various sports, motorcyclists, etc.

10:18 - 17. tra 2019.

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