FW: {Disarmed} [gemimuhendisleri] A NEW MATERIAL TO CUT WEIGHT OF SHIPS BY 30 PERCENT
sebnem helvacioglu
Aşağıdaki bilgi ilginize.
grubunda yaklaşık 1000 üye var. nadiren faydalı bilgiler, çoğunlukla polemic olsada
üye olmanızı tavsiye ederim. Çalışacağınız sektörün ufak bir aynası.
Şebnem helvacıoğlu
From: gemimuhe...@yahoogroups.com
[mailto:gemimuhe...@yahoogroups.com] On Behalf Of Kadir Sinasi
Yalçinkaya
Sent: 21 Mart 2011 Pazartesi 23:31
To: gemimuhe...@yahoogroups.com
Subject: {Disarmed} [gemimuhendisleri] A NEW MATERIAL TO CUT WEIGHT OF
SHIPS BY 30 PERCENT
A new material is tested to cut the weight of ships by 30
percent. For an average sized freight vessel with a capacity of 7000 m? this
corresponds to a weight reduction of more than 1000 tons. Researchers from
Fraunhofer Institute for Machine Tools and Forming Technology in Chemnitz,
Germany, have experimented with an aluminum powder that foams when heated up. The
new material is lighter than water and has a high stiffness.
Within seconds a cube made from aluminum starts to inflate into the shape of a sponge
under the impact of heat. The secret of this reaction lies in the compounds of the new
material. The metal is a mixture of aluminum and titanium hydride powder, which acts as a
blowing agent just like yeast makes dough rise.
The aim of the researchers from the EU research project CREATING was to find a processing
method to build large aluminum foam sandwich plates. These compounds could eventually
replace steel plates of a vessel. To form such sandwich compounds, the powder is initially
pressed into bars. The bars are then placed between two steel sheets and heated in an
oven. At a temperature of more than 650° Celsius the new material expands and bonds with
the steel sheets without the help of any adhesives. Tests proved the stiffness of the new
material. Put under high stress it doesn’t break but only deforms. The advantage: A ship
hull can travel through Northern Europe all year round, as it can even withstand ice sheets
on the waters.
Veikko Hintsanen, a captain from Finland, has helped the German researchers to design a
super light ship which they call “Bioship 1”. For shipping companies a lighter ship means
more payload, less trips and therefore less fuel consumption and CO2 emissions. But
besides that “Bioship 1” offers even more ecological features. For example, running with
liquid natural gas (LNG) it will avoid oil pollution in case of an accident. Hintsanen believes
that the new ship could revolutionize freight transportation in Finland. In his country
forestry is one of the cornerstones of the national economy. Its annual turnover is about 27
percent of the net exports. Paper or furniture productions are the typical usages. But there
is also enough wood to supply Finland with heat and energy.
Today trucks are used to transport wood from the remote forests to bio energy plants. The
problem: if the distance is more than 50 km, road transportation becomes too expensive.
“Bioship1” offers a solution: the harvesting areas could be increased and thus more Finish
households could be supplied by bio power plants in the future.
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