Composites
Composites
Composites
BSECE 4-A
GROUP 5
ADAMS, ROWELL
CAYABYAB, JHED LANIEL
CORPUZ, JANMARC
DE PEDRO, RYAN
ELLE, JOHN CARLO
RIVERA, DAYLE JERICHO
What is Composite Materials?
• It is a material that made by
combining two or more materials
that usually have different
physical and chemical properties.
• When they are combined, they
can create a material that have
unique properties.
IMPORTANT ROLE OF COMPOSITES
THROUGHOUT HUMAN HISTORY
• PLYWOOD
• CONCRETE
• CARTONNAGE
• COB
• PAPIER-MACHE
PLYWOOD
• Gluing thin sheet of
wood together to create
a thicker and stronger
final product
CONCRETE
• Made up of a
filler(Aggregates like
stone, sand, etc.) and a
binder(Cement paste).
CARTONNAGE
• It was made of layers
of linen or papyrus
covered with plaster
with plaster.
10/24/2023
Sample Footer Text 6
COB
• Also called Mud Bricks
or Mud Walls.
• It is a mixture of Clay,
Sand and Straw.
PAPIER-MACHE
• consisting of paper pieces
or pulp, sometimes
reinforced with textiles,
bound with an adhesive,
such as glue, starch, or
wallpaper paste.
PROPERTIES OF COMPOSITES
• STRONG
• LIGHTWEIGHT
• CORROSION RESISTANCE
• LOW DENSITY
• LOW THERMAL CONDUCTIVITY
• LOW COEFFICIENT OF THERMAL EXPANSION
• SHOCK RESISTANCE
• FATIQUE AND CREEP RESISTANCE
Weight reduction
Design flexibility
•
0RGANIC MATRIX COMPOSITES
SUBDIVISION
CARBON-CARBON MATRIX
COMPOSITES
•
•
Provide superior levels of strength and
stiffness to the composite.
LAMINAR COMPOSITES
SUBDIVISION
PARTICULATE COMPOSITES
COMPOSITES WITH
RESPECT TO
MATRIX CONSTITUENTS
Matrix phase refers to one
of the two main components
of the composite structure,
the other being the
reinforcement phase.
These two phases work
together to create a
composite material with
enhanced properties
compared to the individual
components. This two
constituents make
composites heterogeneous
at a microscopic scale but
statically homogeneous at
FUNCTIONS OF MATRIX
• Holds the fibers together
• Protects the fibers from environment
• Distributes the loads evenly between fibers so that
all fibers are subjected to same amount of strain
• Enhances transverse properties of a laminate
• Improves impact and fracture resistance of a
component
• Carry inter laminar shear
FUNCTIONS OF MATRIX
• Holds the fibers together
• Protects the fibers from environment
• Distributes the loads evenly between fibers so that
all fibers are subjected to same amount of strain
• Enhances transverse properties of a laminate
• Improves impact and fracture resistance of a
component
• Carry inter laminar shear
FUNCTIONS OF MATRIX
SHORT-BEAM INTERLAMINAR SHEAR
METHOD STRENGTH
FUNCTIONS OF MATRIX
RED-DASHED LINE IS
DUE TO COMPOSITE
ACTION
THERMOPLASTIC RESINS
Thermoplastics, on the other hand, can be repeatedly
softened and re-formed by application of heat. They
soften upon heating and can be reshaped with heat and
pressure.
Thermoplastic can be synthesized by the process called
addition polymerization while thermosets are by
condensation polymerization.
Addition
Polymerization
Monomer alkene ethene
joined to form polyethene
polymer
Condensation
Polymerization
SOME THERMOSETS
Epoxies are the workhorse materials for
airframe structures and other aerospace
applications. They produce composites
with excellent structural properties.
Epoxies tend to be rather brittle materials,
but toughened formulations with greatly
improved impact resistance are available.
The maximum service temperature is
affected by reduced elevated-temperature
structural properties resulting from water
absorption. A typical airframe limit is
about 120∘C (250∘F).
Bismaleimide resins are used for
aerospace applications requiring higher
temperature capabilities than can be
achieved by epoxies. They are employed
for temperatures of up to about 200∘C
(390∘F).
Thermosetting polyimides are being used in applications at
temperatures as high as 250–290∘C (500–550∘F). However,
new resins have been developed with even higher
temperature limits.
Phenolic resins have good high-
temperature resistance and produce less
smoke and toxic
products than most resins when burned.
They are used in applications such as
aircraft interiors
and offshore oil platform structures, for
which fire resistance is a key design
requirement..
SOME
THERMOPLASTICS
Nylon, a crystalline
thermoplastic, tend to have
better solvent resistance and
are extensively used with
chopped E-glass fiber
reinforcements in countless
injection-molded parts.
MMCs
• Non-Brittle Failure
Applications of CCCs
FIBER REINFORCED
COMPOSITES
FIBER REINFORCED COMPOSITES
• COMMONN MATERIALS
HIGH STRENGTH
LIGHTWEIGHT
DURABILITY
DESIGN FREEDOM
DIFFERENT ARRANGEMENTS AND TYPES OF FIBERS
WITHIN MATERIALS
• DISCONTINUOUS AND RANDOMLY ORIENTED FIBERS: SHORT FIBERS RANDOMLY DISTRIBUTED WITHIN A
MATERIAL, RESULTING IN ISOTROPIC PROPERTIES.
DIFFERENT ARRANGEMENTS AND TYPES OF FIBERS
WITHIN MATERIALS
• DISCONTINUOUS AND ALIGNED FIBERS: SHORT FIBERS INTENTIONALLY ORIENTED IN A SPECIFIC DIRECTION
WITHIN A MATERIAL, POTENTIALLY RESULTING IN ANISOTROPIC PROPERTIES.
DIFFERENT ARRANGEMENTS AND TYPES OF FIBERS
WITHIN MATERIALS
• CONTINUOUS AND ALIGNED FIBERS: LONG, UNBROKEN FIBERS INTENTIONALLY ORIENTED IN A SPECIFIC
DIRECTION WITHIN A MATERIAL, OFTEN RESULTING IN STRONG AND STIFF PROPERTIES ALONG THE
ALIGNMENT DIRECTION.
DIFFERENT ARRANGEMENTS AND TYPES OF FIBERS
WITHIN MATERIALS
• FABRIC: A TEXTILE MATERIAL CREATED BY WEAVING OR KNITTING FIBERS TOGETHER, WHICH CAN BE MADE
FROM VARIOUS TYPES OF FIBERS AND HAS DIVERSE PROPERTIES DEPENDING ON ITS CONSTRUCTION.
LAMINAR
COMPOSITES
LAMINAR COMPOSITES
• LAMINAR COMPOSITE IS A TWO-DIMENSIONAL STRUCTURE MADE OF HIGH-STRENGTH SHEETS OR PANELS,
LIKE WOOD AND FIBER-REINFORCED PLASTICS, STACKED AND CEMENTED TOGETHER TO VARY THEIR
ORIENTATION.
COMPONENTS OF LAMINAR COMPOSITES
• LAYERS
• MATRIX MATERIAL
• REINFORCEMENT MATERIAL
• ORIENTATION
• LAYER THICKNESS AND SEQUENCE
• BONDING
COMPONENTS OF LAMINAR COMPOSITES
• LAYERS- LAMINAR COMPOSITES CONSIST OF TWO OR MORE LAYERS STACKED ON TOP OF
EACH OTHER.
• MATRIX MATERIAL- ONE OF THE LAYERS SERVES AS A MATRIX MATERIAL, OFTEN MADE OF A
POLYMER RESIN OR ANOTHER TYPE OF ADHESIVE SUBSTANCE.
• REINFORCEMENT MATERIAL- THE OTHER LAYERS, KNOWN AS REINFORCEMENT MATERIALS,
ARE TYPICALLY MADE OF FIBERS SUCH AS CARBON AND GLASS.
• ORIENTATION- THE ORIENTATION AND ARRANGEMENT OF THE REINFORCEMENT FIBERS
WITHIN EACH LAYER CAN BE CUSTOMIZED TO ACHIEVE SPECIFIC MECHANICAL PROPERTIES.
• LAYER THICKNESS AND SEQUENCE- THE THICKNESS OF EACH LAYER AND THE SEQUENCE IN
WHICH THEY ARE STACKED CAN BE ADJUSTED TO OPTIMIZE THE COMPOSITE'S PROPERTIES.
• BONDING- THE LAYERS ARE BONDED TOGETHER THROUGH PROCESSES SUCH AS CURING,
HEATING, OR PRESSURE APPLICATION, ENSURING A STRONG AND DURABLE CONNECTION
BETWEEN THEM.
ADVANTAGES OF LAMINAR COMPOSITES
HIGH
STRENGTH
LIGHT WEIGHT
DURABILITY
APPLICATIONS
AEROSPACE INDUSTRY
• LAMINAR COMPOSITES USED IN AIRCRAFT STRUCTURES TO REDUCE WEIGHT AND IMPROVE
FUEL EFFICIENCY.
• EXAMPLES: CARBON-FIBER COMPOSITES IN AIRCRAFT WINGS AND FUSELAGE.
APPLICATIONS
AUTOMOTIVE INDUSTRY
• LAMINAR COMPOSITES EMPLOYED IN VEHICLE COMPONENTS TO ENHANCE STRENGTH AND
REDUCE WEIGHT.
• EXAMPLES: CARBON-FIBER REINFORCED PARTS IN SPORTS CARS.
PARTICULATE
COMPOSITES
PARTICULATE COMPOSITES
• PARTICULATE COMPOSITES ARE COMPOSITE MATERIALS MADE BY COMBINING A MATRIX
MATERIAL WITH SMALL PARTICLES OR FILLER MATERIALS TO ENHANCE SPECIFIC PROPERTIES OR
ACHIEVE DESIRED CHARACTERISTICS.
• COMPOSED OF PARTICLES DISTRIBUTED OR EMBEDDED IN A MATRIX BODY. THE PARTICLES MAY
BE FLAKES OR IN POWDER FORM. CONCRETE AND WOOD PARTICLE BOARDS ARE EXAMPLES
OF THIS CATEGORY.
WOOD CONCRETE
KEY Matrix Material
ELEMENTS OF
• This is the primary substance that surrounds and
PARTICULATE holds the particles together.
COMPOSITES
Dispersed Particles
• These are solid particles, often of a different
material than the matrix, which are distributed
uniformly within the matrix.
THE COMBINATION OF THE MATRIX MATERIAL AND THE
DISPERSED PARTICLES IN A PARTICULATE COMPOSITE LEADS
TO SEVERAL ADVANTAGEOUS PROPERTIES
ENHANCE STRENGTH
IMPROVED HARDNESS
TAILORED PROPERTIES
REDUCED WEIGHT
TYPES OF PARTICULATE COMPOSITES
Metal Matrix
Composites (MMCs)
Ceramic Matrix
Composites (CMCs)
Polymer Matrix
Composites (PMCs)
APPLICATIONS
AEROSPACE
• LIGHTWEIGHT, HIGH-STRENGTH COMPOSITES USED IN AIRCRAFT STRUCTURES.
• IMPROVED FUEL EFFICIENCY AND PERFORMANCE.
AUTOMOTIVE
• ENHANCING FUEL EFFICIENCY BY REDUCING VEHICLE WEIGHT.
• ENHANCED CRASH SAFETY THROUGH HIGH-STRENGTH COMPOSITES IN CAR BODIES.
CONSTRUCTION
• REINFORCED CONCRETE WITH PARTICULATE COMPOSITES FOR ADDED STRENGTH.
• REDUCED MAINTENANCE COSTS IN HARSH ENVIRONMENTS.
FABRICATION METHODS
OF COMPOSITES
• Engines bodies
• Piston
• Cylinder
• connecting rod
• crankshafts
• bearing materials
• brake discs
CONSTRUCTION
Concrete
cost-effective and can withstand substantial
compressive forces without breaking.
CONSTRUCTION
Fiber-Reinforced Plywood
A laminar composite
Polymers
used in Bridge structures
Medical Application