Would an isogrid better resist buckling if its members weren't I-beams, but were more like bamboo?
I've long been impressed by how strong bamboo is. The wood is different than tree-wood, but it looks like it's mostly down to its shape.
Assuming cost was no object, could a vacuum balloon fly...
That's very true.
What made me think it might have potential is because the solid matter in the design is only under tensile stress. The strongest, lightest materials are strong in tension, not compression. The gas turns the outside compressive load into a tensile.
An aramid thread about a...
I've been enamored with the idea of vacuum balloons for the better part of a decade. I know they're an extremely difficult engineering challenge, and may not actually be possible even with the strongest materials.
I've come across a novel approach to the problem, and I'm curious what actual...
As a lay person I've wondered this for a while.
Obviously heavy machinery that rolls on dirt and mud needs large tire/wheel diameters and widths to spread their weight out to an acceptable ground pressure, eventually having to switch over to cat tracks when larger wheels start to give...
I need a mechanical device modeled in Autodesk Inventor, but I just started teaching myself the program about a week ago, and I can see it's going to take a long time to become proficient at it. I'm an artist, not an engineer.
So I'm looking for a mechanical engineer that is skilled with this...
How quickly do liquid nitrogen or oxygen actually chill objects? Say someone hosed you down with it, how much would it actually take to freeze you? Wouldn't relatively small amounts of it just boil off you, taking some of your heat with it, but not actually hurting? Actually, the boiling itself...
How do you get the salt to go into solution in the ethanol? I tried today, and none of the salt dissolved, even with heavy agitation. It wasn't even close to a gram of salt, in at least 50cc of ethanol.
I've seen various documentaries where WWII-era aircraft wreckage has been sitting out in the jungles on Pacific islands for over sixty years and everything that is aluminum is in really good shape. Little bit of scrubbing the algae, mildew, and moss off of it, and it would look like new.
I...
What is POSS?
Five min., that's plenty fast for me.
Do you know the answers to my safety-related questions? I don't want this thing blowing up months or years down the line and hurting someone.
Thank you.
The needs of the many outweigh the needs of the few.
That suicidal actions aren't being undertaken is pretty damning evidence against those who're screaming that this is another potential Chernobyl-level event. If it was, bucket brigades to the storage pool would be in order.
Japan still...
chemisttree, was the THF you used the kind that is stabilized with BHT, or pure THF?
I won't use pure THF--having an artwork that is subject to unpredictable explosion isn't a selling point. $60/L* is a lot to pay for something that may not work.
Does NaCl react with butylated...