On 10/15/2014 6:43 AM, brucedp5 via EV wrote:
http://the-japan-news.com/news/article/0001568374
Japan Technology / Carbon-fiber tech makes sci-fi real
The Yomiuri Shimbun October 07, 2014
[image / The Yomiuri Shimbun
https://the-japan-news-archives.s3-ap-northeast-1.amazonaws.com/preview/entries/88409/materials/227869/2d7c563d5bb44279006526155c4600a8.jpg?AWSAccessKeyId=AKIAI7EPFDYX6SSPYKKQ&Expires=1412760903&Signature=0jYotTYwrYKAdyYNMqlnLMomAC0%3D
A carbon-fiber car body frame made by Teijin Ltd. is lifted by two women in
Matsuyama.
]
The government regards technological innovation as a pillar of Japan’s
economic growth strategy, believing that technological development will give
an advantage to the nation and Japanese companies.
This is the final installment in a three-part series examining Japan’s aim
to regain its status as a manufacturing power.
A pair of women can easily lift one of the lightweight car frames on display
at an office of major textile maker Teijin Ltd. in Matsuyama.
One frame weighs only 47 kilograms. If the same frame were made of steel,
the weight would be 250 to 300 kilograms.
When a Yomiuri Shimbun reporter took an electric vehicle made with such a
frame for a test drive, its accelerating conditions were not distinguishable
from those of conventional EVs — but its braking power was surprising.
With the brake applied at a speed of 50 kilometers per hour, the wheels turn
over only a little, and the car body instantly stops.
“The braking is so strong that drivers may get whiplash,” says Yasunari
Hotani, 55, chief of the company’s Composites Innovation Center.
The experimental EV comprises a brake, suspension devices and other parts
that are usually used in mini-cars. As the body is light, the EV is more
underslung than ordinary cars. Driving it has the feel of a racing car, as
the car body hugs the road even while turning on a sharp curve.
Carbon fibers, made from petroleum or other materials, measure a few microns
in diameter. (One micron is one-1,000th of one millimeter.) A single carbon
fiber is no more than a string, the diameter of which is about one-tenth
that of a human hair.
But bundling and solidifying them with resins or other adhesives gives the
fibers strength more than 10 times that of steel. Furthermore, objects
constructed of carbon fibers are several times lighter than equivalent steel
objects.
Studies on carbon fibers began in the 1960s, and their breadth of use now
extends to military and civilian aircraft. Japanese makers, including Toray
Industries Inc. and Teijin, hold a combined share of about 60 percent of the
global market for carbon fibers.
After the United States and European countries toughened regulations on car
fuel efficiency, the development of carbon fibers for making vehicle bodies
lighter was accelerated.
Carbon fiber materials for aircraft had the disadvantage of taking a long
time to shape and then solidify with resins.
But special processing methods have enabled them to be shaped with a press
if they are heated, and mass-production has become easier as a result.
In June, the government began full-fledged efforts to assist the research
and development of nanocellulose, a fiber material, for practical use.
Nanocellulose fibers are extracted from wood fibers that are softened with
chemicals.
Nanocellulose is a little weaker than carbon fiber, but the material can be
processed into a transparent state. With nanocellulose fibers, it is
possible to make super-thin film that can bend without breaking.
Kyoto University Prof. Hiroyuki Yano, 55, says: “For Japan, which has many
forests, [nanocellulose fiber] could be a promising material. The United
States and China are also enthusiastic toward developing the material. The
next two to three years from now are the critical stage.”
Nippon Paper Industries Co. aims to begin commercial use of nanocellulose
fiber in fiscal 2016. “We sent manufacturing samples to more than 100
companies, and reactions are satisfactory,” says Masayuki Kawasaki, 53,
chief of the section in charge of the project ...
[© The Yomiuri Shimbun]
...
http://gizmodo.com/5994113/7-incredible-uses-for-nanocellulose
Bendable batteries, lighter cars, 8x strength2weight of stainless steel
...
http://en.wikipedia.org/wiki/Nanocellulose
Nanocellulose
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http://gas2.org/2014/10/06/tesla-pre-owned-program-means-lower-prices-higher-profits/
Tesla Pre-Owned Program Means Lower Prices, Higher Profits
...
http://www.greencarreports.com/news/1094785_used-tesla-electric-cars-certified-previously-owned-cpo-program-coming-company-confirms
Used Tesla EVs: Certified Previously Owned (CPO) Program Coming
http://www.thestar.com.my/Tech/Tech-News/2014/10/07/Woz-on-Woz/
Woz uses app to honk his Tesla EV horn pranking his wife
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EVLN: Twitter Had Fun With Elon Musk's little d
{brucedp.150m.com}
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Can't wait for that space elevator! They need to speed it up though, I
don't know anybody who want's to spend weeks on an elevator - even if it
is like an RV on the inside. I also wonder what a carbon fiber EV body
would sell for.
--
Geoff Pullinger
http://www.evalbum.com/2445
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