Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

It Looks a Lot Like Glass, but Itís Tough as Steel
NY Times ^ | January 10, 2011 | SINDYA N. BHANOO

Posted on 01/11/2011 9:25:18 PM PST by neverdem

The moment a crack forms in a piece of glass, it is prone to spread. That’s because although glass is very strong and resistant to deformation, it lacks the toughness that metals like aluminum and steel have.

Now, researchers from the California Institute of Technology and the University of California, Berkeley, report that they have devised a new type of metallic glass that is as strong as glass, but as tough as steel — the toughest of all metals.

“Typically with materials it’s very hard to get both toughness and strength; either you get one or the other,” said Marios Demetriou , a materials engineer at Caltech and the study’s lead author.

He and his colleagues report their findings in the journal Nature Materials.

There is, however, a catch to the seemingly transformational discovery.

“The cost of this material is very high, and it’s essentially high enough to be prohibitive for commodity-type products,” Dr. Demetriou said, though he did not have exact numbers...

(Excerpt) Read more at nytimes.com ...


TOPICS: Culture/Society; News/Current Events; Technical; Testing
KEYWORDS: aluminium; aluminum; anhydrous; damagetolerantglass; materialsscience; metallicglass; regolith
A damage-tolerant glass
1 posted on 01/11/2011 9:25:23 PM PST by neverdem
[ Post Reply | Private Reply | View Replies]

To: neverdem

Transparent Aluminum!


2 posted on 01/11/2011 9:26:30 PM PST by ffusco (The President will return this country to what it once was...An arctic wasteland covered in ice.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: ffusco

The Germans did this a few years ago: they named it ‘aluminium’.


3 posted on 01/11/2011 9:29:30 PM PST by SatinDoll (NO FOREIGN NATIONALS AS OUR PRESIDENT!)
[ Post Reply | Private Reply | To 2 | View Replies]

To: ffusco

Ya beat me to it.


4 posted on 01/11/2011 9:29:59 PM PST by sinanju
[ Post Reply | Private Reply | To 2 | View Replies]

To: ffusco

Cool...now we can build starships....

all we need is a wrap core...

*grin*


5 posted on 01/11/2011 9:30:28 PM PST by Crim (The Obama Doctrine : A doctrine based on complete ignorance,applied with extreme incompetence..)
[ Post Reply | Private Reply | To 2 | View Replies]

To: neverdem

Reardon metal, right on schedule.


6 posted on 01/11/2011 9:30:38 PM PST by SpaceBar
[ Post Reply | Private Reply | To 1 | View Replies]

To: ffusco

Make a dadgum iPhone screen out of it!


7 posted on 01/11/2011 9:30:57 PM PST by PetroniusMaximus
[ Post Reply | Private Reply | To 2 | View Replies]

To: ffusco

Scottie, we miss ya!


8 posted on 01/11/2011 9:31:13 PM PST by SeaWolf (Orwell must have foreseen the 21st Century US Congress when he wrote 1984)
[ Post Reply | Private Reply | To 2 | View Replies]

To: neverdem

Who cares how expensive it is, this is just what Dan Burton and Congress are looking for!

http://www.freerepublic.com/focus/f-news/2655267/posts


9 posted on 01/11/2011 9:32:11 PM PST by EternalVigilance (How strangely will the Tools of a Tyrant pervert the plain Meaning of Words! -- Samuel Adams)
[ Post Reply | Private Reply | To 1 | View Replies]

To: ffusco

The price will go down.


10 posted on 01/11/2011 9:32:24 PM PST by RobbyS (Pray with the suffering souls.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: ffusco

Beat me to it too :)


11 posted on 01/11/2011 9:33:18 PM PST by StayoutdaBushesWay (Why Johnny Ringo, you look like someone just walked over your grave!)
[ Post Reply | Private Reply | To 2 | View Replies]

To: SatinDoll

Yes, transparent aluminum already exists, and as yo usay the Germans did this a couple years ago. Posted a pic of it. Kind of opaque.


12 posted on 01/11/2011 9:34:31 PM PST by Secret Agent Man (I'd like to tell you, but then I'd have to kill you.)
[ Post Reply | Private Reply | To 3 | View Replies]

To: ffusco
LOL! When I saw the title I wondered if anyone had made that reference!
13 posted on 01/11/2011 9:37:17 PM PST by higgmeister ( In the Shadow of The Big Chicken!)
[ Post Reply | Private Reply | To 2 | View Replies]

To: SeaWolf
The American Cultural Lexicon is the true great leveler!
14 posted on 01/11/2011 9:40:02 PM PST by higgmeister ( In the Shadow of The Big Chicken!)
[ Post Reply | Private Reply | To 8 | View Replies]

To: ffusco

*snort* That was my first thought, as well!


15 posted on 01/11/2011 9:48:23 PM PST by SuziQ
[ Post Reply | Private Reply | To 2 | View Replies]

To: neverdem
WARNING:
Coarseness ahead. Highlight to read, do nothing to ignore.

There once was a man from Madras,
Whose testes were made of spun glass,
When he clicks them together,
They play Stormy Weather,
And lightning shoots out of his ass.


16 posted on 01/11/2011 9:50:25 PM PST by I see my hands (How's that ballot box working out for you?)
[ Post Reply | Private Reply | To 1 | View Replies]

To: neverdem

The planet and whales are saved!!!!


17 posted on 01/11/2011 9:51:35 PM PST by Razzz42
[ Post Reply | Private Reply | To 1 | View Replies]

To: ffusco

Aye, Scottie!!!


18 posted on 01/11/2011 9:51:54 PM PST by Bush_Democrat ((Ex-Dem since 2001 *Folding@Home for the Gipper - Join the FReeper Folders*))
[ Post Reply | Private Reply | To 2 | View Replies]

To: neverdem

What’s the difference between toughness and strength?


19 posted on 01/11/2011 9:52:44 PM PST by Harpo Speaks (Honk! Honk! Honk! Either it's foggy out, or make that a dozen hard boiled eggs.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: neverdem

didn’t Scotty invent that in Star Trek IV??


20 posted on 01/11/2011 9:54:30 PM PST by Coleus (The Immaculate Conception: O Mary, conceived without sin, Pray for us, who have recourse to Thee)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Crim
all we need is a wrap core...

Hmmm. If we were to take your "Wrap Core," and manipulate it...perhaps if we bend, twist and WARP it... it could become an incredible power source. The only problem is what to call it...

21 posted on 01/11/2011 9:55:14 PM PST by Grizzled Bear ("Does not play well with others.")
[ Post Reply | Private Reply | To 5 | View Replies]

To: Grizzled Bear

Pretzel Drive. Call it a Pretzel Drive.


22 posted on 01/11/2011 9:58:40 PM PST by GladesGuru (In a society predicated upon freedom, it is essential to examine principles,)
[ Post Reply | Private Reply | To 21 | View Replies]

To: GladesGuru

A Warp Croe!


23 posted on 01/11/2011 10:13:17 PM PST by BenKenobi (Rush speaks! I hear, I obey)
[ Post Reply | Private Reply | To 22 | View Replies]

To: RobbyS; All

There was a time when aluminum was very expensive.


24 posted on 01/11/2011 10:13:49 PM PST by gleeaikin
[ Post Reply | Private Reply | To 10 | View Replies]

To: gleeaikin

Fascinating to see how material manufacture has progressed. Equally fascinating that improvements in the internal combustion motor have kept it ahead of all rivals.


25 posted on 01/11/2011 10:17:51 PM PST by RobbyS (Pray with the suffering souls.)
[ Post Reply | Private Reply | To 24 | View Replies]

To: ffusco

26 posted on 01/11/2011 10:18:01 PM PST by montag813 (http://www.facebook.com/StandWithArizona)
[ Post Reply | Private Reply | To 2 | View Replies]

To: SpaceBar

LOL. Reardon Medal. Just what I was thinking. Reading the book now and thinking that I finally got around to reading this book after all these years just as a lot of it is now reality.


27 posted on 01/11/2011 10:19:36 PM PST by WVNan
[ Post Reply | Private Reply | To 6 | View Replies]

To: Grizzled Bear

Sorry I was thinking about a blunt...a wrap core...

*grin*


28 posted on 01/11/2011 10:21:21 PM PST by Crim (The Obama Doctrine : A doctrine based on complete ignorance,applied with extreme incompetence..)
[ Post Reply | Private Reply | To 21 | View Replies]

To: neverdem

Life imitates art.
All the ‘windows’ in the spaceships in Star Wars were made of ‘durasteel’. Imagine it- make it happen!
Anti-gravity next?


29 posted on 01/11/2011 10:26:36 PM PST by ClearBlueSky (Whenever someone says it's not about Islam-it's about Islam. Jesus loves you, Allah wants you dead!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: I see my hands
Coarseness ahead

Lameness too

30 posted on 01/11/2011 10:30:39 PM PST by HiTech RedNeck (I am in America but not of America (per bible: am in the world but not of it))
[ Post Reply | Private Reply | To 16 | View Replies]

To: neverdem

Don’t sit on those glass flutes just yet!


31 posted on 01/11/2011 10:32:54 PM PST by DGHoodini (Iran Azadi)
[ Post Reply | Private Reply | To 1 | View Replies]

To: HiTech RedNeck
You're right, 30 does come after 16.

32 posted on 01/11/2011 10:42:07 PM PST by I see my hands (_8(|)
[ Post Reply | Private Reply | To 30 | View Replies]

To: SpaceBar

ahahaha


33 posted on 01/11/2011 11:01:59 PM PST by maine-iac7
[ Post Reply | Private Reply | To 6 | View Replies]

To: Harpo Speaks; Robert A. Cook, PE
What’s the difference between toughness and strength?

This is somewhat crude from memory. You might want to check an engineering or scientific dictionary. Think of toughness like hardness. Industrial diamonds have a crystal structure. They cut just about everything because they are so hard. I think of strength like in tensile strength. Think of steel - an alloy not unlike glass - cables holding a load off the ground. That's one way to measure strength. Those steel cables will be tested to the load that they fail for strength. Any corrections are always appreciated.

34 posted on 01/11/2011 11:04:35 PM PST by neverdem (Xin loi minh oi)
[ Post Reply | Private Reply | To 19 | View Replies]

To: BenKenobi; Grizzled Bear; GladesGuru

Bistro Math Drive


35 posted on 01/11/2011 11:23:52 PM PST by IYellAtMyTV (Workday Forecast--Increasing pressure towards afternoon. Rum likely by evening.)
[ Post Reply | Private Reply | To 23 | View Replies]

To: ffusco
Regolith, The “Other” Lunar Resource "........Making glass by melting regolith can produce building materials of extreme strength and durability; anhydrous glass made from lunar soil is stronger than alloy steel with a fraction of its mass....."
36 posted on 01/11/2011 11:29:07 PM PST by Cincinatus' Wife (Allhttp://www.freerepublic.com/focus/f-news/2122429/posts)
[ Post Reply | Private Reply | To 2 | View Replies]

To: neverdem

bflr


37 posted on 01/11/2011 11:36:39 PM PST by Captain Beyond (The Hammer of the gods! (Just a cool line from a Led Zep song))
[ Post Reply | Private Reply | To 1 | View Replies]

To: Harpo Speaks
What’s the difference between toughness and strength? Bend a coat hanger back and forth. It undergoes plastic deformation without breaking. that's tough. Pull a steel rod apart. Once it breaks you reached its strength.
38 posted on 01/11/2011 11:55:18 PM PST by LoneRangerMassachusetts (The meek shall not inherit the Earth)
[ Post Reply | Private Reply | To 19 | View Replies]

To: Secret Agent Man
Military: New Aluminum Windows Stop .50-Caliber Bullet

By LiveScience Staff
posted: 18 October 2005

A new type of transparent armor made of aluminum could one day replace glass in military vehicles. The product is called aluminum oxynitride. It is being tested by the Army and the University of Dayton Research Institute in Ohio. The material is a ceramic compound with a high compressive strength and durability, according to an Army statement issued this week. It performs better than the multilayered glass products currently in use, and its about half the weight. It is virtually scratch-resistant.

"The substance itself is light-years ahead of glass," said 1st Lt. Joseph La Monica, who heads the research.

Glass is still used in the new process, being sandwhiched between an outer layer of the polished aluminum oxynitride and a polymer backing.

In a test this summer, the product held up to a .50-caliber sniper's rifle with amor-piercing bullets. Traditional glass armor did not survive the test.

Officials hope the product will prove even more useful when considering more severe threats, such as explosives.

"The higher the threat, the more savings you're going to get," La Monica said. "With glass, to get the protection against higher threats, you have to keep building layers upon layers. But with [the new product], the material only needs to be increased a few millimeters."

"Achieving protection at lighter weights will allow the armor to be more easily integrated into vehicles," said Ron Hoffman, a researcher at University of Dayton Research Institute.

Cost vs. Durability

Time, blowing sand and other environmental factors degrade glass surfaces. The aluminum material is expected to retain its clarity for much longer.

"It all comes down to survivability and being able to see what's out there and to make decisions while having the added protection," Hoffman said.

The military is considering installing the aluminum windows on Humvees and low-flying, slower aircraft like the the C-130 Hercules.

The holdup for now is price.

Traditional transparent armor costs less than $4 per square inch. The aluminum oxynitride is now at least $10 per square inch. That price would come down with mass production. And the material's longevity would make it cost less than the initial price tag would indicate.

"It might cost more in the beginning, but it is going to cost less in the long run because you are going to have to replace it less," La Monica said.


39 posted on 01/12/2011 1:36:40 AM PST by Iron Munro (When a society loses its memory, it descends inevitably into dementia - Mark Steyn)
[ Post Reply | Private Reply | To 12 | View Replies]

To: neverdem
Toughness = amount of energy a material can withstand before breaking.

Strength = amount of force it can withstand before yielding..

I know, still rather cryptic.

Steel = strong and tough, glass=strong, but brittle, therefore not tough. Similarly, hardened steel can be less tough than softer steel, since it is more prone to break when struck..

40 posted on 01/12/2011 4:35:38 AM PST by Paradox (Palin, the female Rush. I wish she would stay that way.)
[ Post Reply | Private Reply | To 34 | View Replies]

To: Ernest_at_the_Beach

ping


41 posted on 01/13/2011 7:11:44 AM PST by GOPJ (."Blood libel" - - when the MSM incites hatred and violence against conservative based on lies.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Harpo Speaks; neverdem; LoneRangerMassachusetts

Toughness is the ability to absorb energy. Strength is stress level at which plastic deformation or fracture occurs. Plastic deformation means the material does not return to it’s original shape.


42 posted on 01/14/2011 12:20:03 PM PST by loungitude ( The truth hurts.)
[ Post Reply | Private Reply | To 19 | View Replies]

To: loungitude
Toughness is the ability to absorb energy

And the non technical way to explaine this to lay people is the example of the coat hanger. It takes a lot of work bending back and forth to break it. It's the ductile nature of steel that permits it to bend into a plastic state making it tough without easily breaking.

43 posted on 01/14/2011 1:58:03 PM PST by LoneRangerMassachusetts (The meek shall not inherit the Earth)
[ Post Reply | Private Reply | To 42 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson