Science Fiction Dictionary
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

 

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 ")

MIT Self-Assembling Reprogrammable Materials
'Faster the cubes moved; faster the circle revolved; the pyramids raised themselves, stood bolt upright on their square bases...' - Abraham Merritt, 1920.

Tiny Mining - Extract Precious Industrial Minerals From Your Own Body
'Jim, I saw them reduce four of my doctors and nurses into those little cubes!' - Gene Roddenberry, 1968.

Polyaramide Is Stronger Than Steel, Light As Plastic
'... harnessed by aludur straps' - Leo Zagat, 1943.

Trinitite, Pentagrams And Isaac Asimov
'...And there were horns.' - Isaac Asimov, 1956.

 

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.

 

 

 

 

Science Fiction Timeline
1600-1899
1900-1939
1940's   1950's
1960's   1970's
1980's   1990's
2000's   2010's

Current News

Megachurches Catch Up To Heinlein
'Mars,' the kid repeated, threw Boone a Scout salute and made a sixty-foot leap over the crowd.

Olympus 3D Printing Using Lunar And Martian Materials
The system may be used to create critical infrastructure on the Moon, including landing pads, blast shields, and roads.

Robot Builds Robots From Voxel Subunits
'I was patiently building the most dangerous thing in creation...'

Meltz Neurorehabilitation Robotic Hand
A new type of rehabilitation called "neuro-rehabilitation.

San Francisco Wants ED-209, Or Maybe Robocop
'The Enforcement Droid series 209 is a self-sufficient law enforcement robot...'

Seoul Self-Driving 42dot Bus Unveiled
'Buses without drivers moved close to the curb and stopped at intervals.'

T. Gondii And The Leaders Of The Pack
'... infected males were more than 46 times more likely to become pack leaders than uninfected males.'

'Parastronaut' First Astronaut With Disability From ESA (Updated!)
'He had left Earth to get away from its gravitational field...'

MIT Self-Assembling Reprogrammable Materials
'Faster the cubes moved; faster the circle revolved; the pyramids raised themselves, stood bolt upright on their square bases...'

Mem, The All-Your-Memories, Super Note-Taking App
'Life experience is linearly additive, but the correlation of memory impressions is an unlimited expansion.'

Porcine Fat Cells For 3D-Printed Whole Pork Products
'I grabbed two Syntho-Steaks out of the freezer...'

LANIUS Loitering Drone Munition Scouts And Maps
'... micro-missiles proceeding at walking pace.'

Copilot Software AI Training Sued By Involuntary Contributors
'...we've promised him a generous pension from the royalties.'

Thin Film Dome Protects Cities From Nuclear Blasts
'What fabric can take that kind of a load? Synthetic spider silk.'

Mars Space Weather Alert (MSWA) System
'On the three-dimensional map at weather headquarters... the storm was colored orange.'

Thermite's Robot Firefighter
Possibly worthy of Transformers!

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.