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Spiders Ingest Nanotubes, Then Weave Silk Reinforced with Carbon
MIT Technology Review ^
| 5-6-2015
Posted on 05/07/2015 2:27:54 PM PDT by Citizen Zed
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To: Fred Hayek
Steel is 30,000 psi.Not an engineer, but I know what the head markings on steel bolts mean, and that appears to be some pretty sorry steel you've got there.
21
posted on
05/07/2015 4:16:00 PM PDT
by
tacticalogic
("Oh, bother!" said Pooh, as he chambered his last round.)
To: null and void
Ain’t exactly 3d printing bud damned interesting anyway.
22
posted on
05/07/2015 4:17:54 PM PDT
by
Lurkina.n.Learnin
(It's a shame nobama truly doesn't care about any of this. Our country, our future, he doesn't care)
To: moose07
I am worried carbon nanotubes may be the next asbestos... if they run through the spiders system and get crapped out the spinerets... where else are the accumulating?
23
posted on
05/07/2015 4:20:15 PM PDT
by
GraceG
(Protect the Border from Illegal Aliens, Don't Protect Illegal Alien Boarders...)
24
posted on
05/07/2015 4:29:21 PM PDT
by
Faith65
(Isaiah 40:31)
To: moose07
It matches high-grade alloy steel for tensile strength . . . I doubt it. I'd like to see somebody come up with numbers/stress diagrams to prove it. Sounds like BS to me.
25
posted on
05/07/2015 4:29:46 PM PDT
by
imardmd1
(Fiat Lux)
To: Citizen Zed
26
posted on
05/07/2015 4:34:42 PM PDT
by
Lurkina.n.Learnin
(It's a shame nobama truly doesn't care about any of this. Our country, our future, he doesn't care)
To: GraceG; moose07; Darksheare
"... if they run through the spiders system and get crapped out the spinerets... where else are the accumulating?" In the soot around your candle and your kerosene lamp.
We've had this stuff forever, but didn't know it.
It's tricky to get it concentrated so that it can be spun as a fiber. That's what's remarkable about getting it into and through the spiders.
If they can mix it with the protein they're getting from transgenic goats, they can spin their own.
Then that's when we'll have some really light weight armor, and maybe some impressively strong escape lines for tall buildings and stuff.
27
posted on
05/07/2015 4:54:06 PM PDT
by
NicknamedBob
(I could win the Lottery! It only slightly skews the odds against me somewhat that I don't play.)
To: Fred Hayek
Don't know where you got this, but ResearchGate Materials Data Book gives high carbon steel Young's modulus as roughly 1000 GPa and tensile strength as about 1000 MPa.
For your information, Young's modulus is not the yield strength. Engineering is a bit more complex than one mught suppose.
28
posted on
05/07/2015 5:02:30 PM PDT
by
imardmd1
(Fiat Lux)
To: Fred Hayek
From Wikipedia
Steel (ASTM-A36) 200GPa 29.0×10^6 psi
Need to check units, and not confuse with Yield Strength.
(Trying to remember from 50 years ago.)
29
posted on
05/07/2015 5:02:31 PM PDT
by
Scrambler Bob
(an icon of resistance within the oppressed patriots, who represent resilience in the face of SSV)
To: moose07; NicknamedBob; GeronL; Tax-chick
ferrulefiber is one step closer to reality.
30
posted on
05/07/2015 5:36:32 PM PDT
by
Darksheare
(Those who support liberal "Republicans" summarily support every action by same.)
To: anymouse
Johnny mnemonic and the monomolecular wire weapon.
31
posted on
05/07/2015 5:37:59 PM PDT
by
Darksheare
(Those who support liberal "Republicans" summarily support every action by same.)
To: Darksheare
Larry Niven had “Sinclair” monofilament. Exceedingly deadly. Like a Star Wars light-saber on a spool of thread.
32
posted on
05/07/2015 5:51:51 PM PDT
by
NicknamedBob
(I could win the Lottery! It only slightly skews the odds against me somewhat that I don't play.)
To: Darksheare
Should be tested on liberals
33
posted on
05/07/2015 6:07:38 PM PDT
by
GeronL
(Clearly Cruz 2016)
To: Citizen Zed; null and void
Three D Printing Ping List leader, null and void, might be interested. Live three dee printing.
34
posted on
05/07/2015 6:22:46 PM PDT
by
bajabaja
(Too ugly to be scanned at the airports.)
To: Scrambler Bob
OK, it’s been a while since I had strength of materials. Steel is 29,000,000 psi. I was off by some decimal points.
35
posted on
05/07/2015 6:56:09 PM PDT
by
Fred Hayek
(The Democratic Party is now the operational arm of the CPUSA)
To: Fred Hayek
Tensile strength is not the same as Young's Modulus, which is a measure of elasticity. For reference, the Young's Modulus, E, for Steel is 200 GPa ≅ 29 x 106 psi.
36
posted on
05/07/2015 7:52:33 PM PDT
by
Rodamala
To: Fred Hayek
37
posted on
05/07/2015 8:11:34 PM PDT
by
Rodamala
To: Fred Hayek
I was off by some decimal points. —
Back in the day (before calculators) we had to track the decimals for slide rule calcs.
I think I still can. The new IT guys don’t know how a slide rule works.
I showed an IT tech once, when his system was down. Joked that my slide rule was backup for system down times.
38
posted on
05/07/2015 9:05:15 PM PDT
by
Scrambler Bob
(an icon of resistance within the oppressed patriots, who represent resilience in the face of SSV)
To: imardmd1
Wouldn't trust it for a steel beam replacement ,but:
link In fact, their mechanical properties can be considered above those of steel itself. Its absorbed energy at breaking point is almost two orders of magnitude higher, while its tensile strength [stress] is almost six times higher and the stresses at breaking point are equivalent. Additionally, although the Youngs modulus of steel is about three times higher than the spider-silk modulus, this last material has a much lower density. Its ratio of tensile strength to density is perhaps five times better than steel. Therefore, at equal mass, the spider silk behaves much better than steel. In conclusion, spider-silk fibers are nearly as strong as several of the current synthetic fibers and can outperform them in many applications in which total energy absorption is important. |
39
posted on
05/07/2015 11:28:23 PM PDT
by
moose07
(Islam and the New Stone age: A book i've not yet written.)
To: Nailbiter
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