Tooth Enamel Secret To Stronger Aircraft

Aerospace engineers are brushing up on their knowledge of tooth enamel. It turns out that teeth and aircraft materials have something in common. Professor Herzl Chai of Tel Aviv University's School of Mechanical Engineering and his colleagues at National Institute of Standards and Technology and George Washington University have published research on how the structure of teeth holds useful clues for aerospace engineers.

"Teeth are made from an extremely sophisticated composite material which reacts in an extraordinary way under pressure," says Prof. Chai. "Teeth exhibit graded mechanical properties and a cathedral-like geometry, and over time they develop a network of micro-cracks which help diffuse stress. This, and the tooth's built-in ability to heal the micro-cracks over time, prevents it from fracturing into large pieces when we eat hard food, like nuts."

In teeth, fibers aren't arranged in a grid, but are "wavy" in structure. There are hierarchies of fibers and matrices arranged in several layers, unlike the single-thickness layers used in aircrafts. Under mechanical pressure, this architecture presents no clear path for the release of stress. Therefore, "tufts" — built-in micro cracks — absorb pressure in unison to prevent splits and major fractures.

Aerospace engineers already use a variety of composite materials in the construction of aircraft. Composites consist of two or more materials (matrix and reinforcement) combined to give a material with properties distinct from the original constituents. They may be naturally occurring, or they may be synthetic.


(Composite materials in aircraft)

Although the use of composite materials is as old as engineering, science fiction writers have championed unusual ideas about the use of natural materials in the creation of sophisticated technological constructions. For example, in his 1989 novel Hyperion, Dan Simmons writes about mighty treeships that are used to travel between the stars.

The Consul remembered his first glimpse of the kilometer-long treeship as he closed for rendezvous, the treeship's details blurred by the redundant machine and erg-generated containment fields which surrounded it like a spherical mist, but its leafy bulk clearly ablaze with thousands of lights which shone softly through leaves and thin-walled environment pods, or along countless platforms, bridges command decks, stairways and bowers. Around the base of the treeship, engineering and cargo spheres clustered like oversized galls while blue and violet streamers trailed behind like ten kilometer-long roots...

From Flying by the Skin of Our Teeth .

Scroll down for more stories in the same category. (Story submitted 8/25/2009)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 1 )

Related News Stories - (" Material ")

3D Printed Graphene Aerogel - So Light!
'... light as cork and stronger than steel...' - Edgar Rice Burroughs, 1929.

Vantablack Now IMMEASURABLY Black
'a black coating now that’s ninety-nine percent absorptive...' - Doc Smith, 1934.

New Paper - Write With Light Erase With Heat
Writing with light, erasing with heat.

Reconfigured Graphene 10X Strong, 5 Percent Dense, As Steel
'...It was made of Alohydrolium, which is the lightest of all metals.' - Hugo Gernsback, 1911.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

3D Printed Artificial Muscles Are Stronger Than Yours
Bots don't need to work out.

Fog Computing (AKA Edge Computing) Ad Hoc Networks
'The tiny devices chirped their impulse codes at one another...'

Dubai Scorpion Police Hoverbike Ready To Pull Young Kirk Over
'Is there a problem, officer?'

HEXA Robotic Help For Plants
Then some unknown race had chanced upon the dreamers and decided to "help them out."

Korean Tesla Model S Video 'Excelsior' Is Indeed Our Motto
'Improving man by bringing him close to Nature, while they combine the sensations of coasting with the interest of seeing the country well...'

DIY Robot Shoots You In The Face
'...there were automatic guns that fired ligamine darts.'

A Bayesian Approach to Safe Imitation Learning For AIs and Robots
Um, how about that pension for the humans who serve as the models for robot behavior?

Qoobo Headless Robotic Therapy Cat Was Anne McCaffrey's Idea
'...used as surrogates in intense dependency cases.'

Autonomous Cars Talk To Each Other At MCity
'My cars talk to one another.'

PUFFER Robots - From Philip K DIck's Second Variety?
'Across the ground something small and metallic came, flashing in the dull sunlight of midday.'

Russian Space Garden
'We saw the gardens, flooded with artificial sunlight...'

Targeted Neuroplasticity Training For 'Downloading Skills'
'I know kung-fu.'

U of M's MCity To Feature Asimov's Automatobuses
Should you turn autonomous buses off?

Crazyflie Drone Swarm Technology
'...Programmed to hang in space in a hexagonal grid pattern.'

Our GodBot, Who Art In Cyberspace
Vaal hungers! We must serve him.

easyJet Short-Haul Electric Jets
Have a little faith, will you? They're working on it.

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.