This file gives information about the X ray and the other diferction

1. •
COMPOSITES
By
Fizzah Urooj
F22BPHYS3E01178
Institute of Physics
The Islamia University of Bahawalpur

2. DEFINITION
 “A composite material is a combination of two
materials with different physical and chemical
properties. When they are combined they create a
material which is specialised to do a certain job, for
instance to become stronger, lighter or resistant to
electricity.Composites could be natural or
synthetic(man made)”
This Photo by Unknown author is licensed under CC BY-SA.

3. IMPORTANCE
OF
COMPOSITE
MATERIALS
Light in weight
Strength-to –weight and stifness-to-weight are
greater than steel or aluminium.
Fatigue properties are better than common
engineering metals.
Composites cannot carrode like steel.
Possible to achieve combination of properties not
attainable with metals,ceramics,or polymers alone.

4. ONE POSSIBLE CLASSIFICATION OF
COMPOSITES
1-Traditional Composites-
Composite materials that occur in nature or have been produced by civilizations for
many years
:wood,bone
2-Synthetic Composites
Modern material system normally associated with the manufacturing industries,in
which the components are first produced separately and then combined in a control
way to achieve the desired structure,properties and geometry
: Concrete and plywood

5. COMPONENTS
IN A
COMPOSITE
MATERIALS
Nearly all composite materials consist of two phases:
a;Primary phase
b;Secondary phase
Primary phase-form the matrix within whch the secondary phase
is imbedded
Secondary phase-imbedded phase sometimes referred to as a
reinforcing agent,because it usually serves to strengthen the
composite
The reinforcing phase may be in the form of fibres,particles,or
various other geometries

6. FUNCTION
OF PRIMARY
PHASE
Provides the bulk form of
the part or product made
of the composite material.
Holds the imbeded phase
in place,usually enclosing
and often concealing it.
When a load is applied,the
matrix shares the load with
the secondary phase

7. ESSENTIALS
OF MATRIX
PHASE
It should be ductile
Bonding strength should
be high
Corrosion resistant

8. THE
SECONDARY
PHASE
Its function is to reinforce the
primary phase
Imbedded phase is most commonly
one of the following shapes
a-fibres
b-particles
c-flakes

9. Applications:
Aerospace
Automotives and Road transportation
Buildings and civil engineering
Design,furniture of home
Equipments and machines
Marine transportation
Ship building
Medical

10. LIMITATIONS
OF
COMPOSITE
MATERIALS
Composite materials are generally expensive
Manufacturing methods for shaping composite
materials are often slow and costly
Composites are more brittle than wrought
materials and thus are more easily damaged
Composites must be thoroughly cleaned of all
contamination before repair