Done by Doha_Smart_7 from Doha School Composites are materials made from two or more constituent materials with significantly different physical or chemical properties, that when combined, produce a material with characteristics different from the individual components. The Project consist of making insulating system for home used water tanks using composite materials in order to preserve the water cooler at hot seasons. The combination of wood and foam layers plus a reflecting aluminum layer constitute a powerful insulating system preserving cool water in summer time and even preserve the sun heat during winter by removing the upper layer.

1. The smart group
Doha School
Composites
I am discovering materials cycle 7
Al-Bairaq
Group names:
Shehab Sayed
Mohab Sayed
Mohammed Meshal
Ahmed Lari

2. Introduction
Composites definition:-
Composite materials are made from two or more constituent materials
that produce a material which has different chemical and physical properties
.
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The importance of composite :-
Improving the materials properties and improve our quality life .
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Types of composite :-
Fiber-reinforced
Laminar
Particulate

3. Testing Different Kinds of Ice
First we want to know that the ice with tissue is stronger than pure ice
and how?
We took pure ice And ice with tissue
We took two different kinds of ice and broke it. The pure ice is
broken to many pieces but the ice with tissue is broken to one
or two pieces .
Conclusion: theice with tissue are stronger than pure ice as
composite .
A1

4. Cutting
Mixing
Pouring
Labeling
Freezing
A1

5. The Result
Conclusion: The Ice Composite is
stronger than pure ice

6. A2
Fishing rod
Wood + plastic
Tennis racket
Plastic + Carbon Wood + Graphite
Pencil
Cement+Sand+Iron+Water
Concrete

7. Exploring the difference between
strength and stiffness
First we took a stick of wood , plastic , iron, rope and pasta
then ordering the materials by trying to bend it ..
Finally by The most and least flexibility and
strength we are ranking the materials in table.
A3
Flexibility : Is the ability to bend a material without breaking
it or changing its original form .
strength : is the power to resist strain or stress; durability.
Stick of iron Pasta Stick of wood Plastic stick Rope
More flexible
Rope Pasta Plastic stick Stick of wood Stick of iron
More strength

8. A4A4
Putting the tape
in the foam by
the different
shapes
Putting pin on
the
foam for
safety
Fixing the
foam in the
table with
c-clamp
Measuring mass by
adding MassUsing ruler
to
measure
the height

9. 0
0.5
1
1.5
2
2.5
3
3.5
0 100 200 300 400 500 600 700
foam1
foam2
foam3
foam4
g
g
g
g
g
Deflection (cm)
Mass(g) g
g
Result:

10. Making
the pole
body Putting tape &
cotton
Rolling wire
Measuring
pole mass
Putting
c-clamp in the
table Measuring pole
body by adding
grams
Tools

11. The Result
The fishing pole should be strong,
flexible and lightweight.
Conclusion :-

12. Product :
Introduction
 In summer season most of gulf citizens suffer from a major common problem: the heat. The
temperature of tap water becomes extremely high and sometimes burning and intolerable. We
are proposing a solution that could reduce the water temperature and make it bearable.
 How can we insulate the heat from the tanks ??
The materials used in the insulator system are: Wood, Foam, Styrofoam and Aluminum. All
layers are gathered making a laminar composite type as shown in the picture below. And we
can use it in winter to use the reflect sun ray and heat to heat the water by opening one layer.
cv
cv

13. The product
Test the smart insulator
 The smart insulator is tested in the morning during one hour. The pictures
below show that the water temperature without insulation was around
37,6°C. The temperature of water inside the insulated ‘tank’ reached only
26,6°C.
Without insulator With insulator
The conclusion :
thanks to our insulation system we succeeded to reduce the temperature of water
around 10°C.

14. Product:
The advantages of the product :-
- You can have a non-hot water.
- You can have a cheap product.
- You can buy it from anywhere.
- You can make it at home.
- You can buy the materials of the
product from anywhere.
- You can use it in summer and
winter.
The material used were inexpensive
and available. This product could
works during summer to insulate
heat and winter to keep the water
worm.
Other insulation materials could be
used in this product such as
Rockwool insulator or Fleece
thermal. Their introduction into
composite materials could make
difference in temperature.
The recommendations of the
product:

15. Composites are used in our daily life ( at school ,
parks, buildings… ) , Composite materials are
made from two or more constituent materials
that produce a material which has different
properties.

16. & Mr. Mahmoud Fawzi , Mr. Mohammed Shafeq
, We would like to thank people who helped
us and people who competed with our
group.
And we thank UNESCO, RasGas, Shell and
Qatar Petroleum .
We would like to express our appreciation to
Albairaq and Qatar university doctors