Composite Materials (week 8-14) Flashcards
combinations of two or more materials that differ in composition or form but each composite material retain their individual identities
Composite Material
E-Glass is manufactured from?
borosilicate glass
S-Glass is manufactured from?
Magnesia-alumina silicate
Which fibres can undergo very high heat?
Ceramic
Boron has a figment of what element?
Tungsten
The bonding substance or adhesive is called?
Matrix
is the element within the composite that is designed to carry the loads.
Reinforcing Material
The third element of a composite structure is the _____ between the matrix and the reinforcing material.
Interface
5 common types of Reinforcing Material
FIBERGLASS CARBON / GRAPHITE BORON CERAMICS ARAMID
_________ is made of molten glass that has been drawns into a fine strand, the stands are then spun and sewn together to form a cloth
Fiberglass
________ is more commonly known as Kevlar, and is flexible
Aramid
_________ ________ is very high in compressive strength and stiffness, and will produce corrosion when bonded to metals
Carbon Fiber
_________ is mostly found in military applications, is also carcinogenic
Boron
_________ is used in high heat applications, like the hot sections of a turbine engine
Ceramic
_______ fibers are ones in which all of the major fibers run in one direction, and provide maximum strength in only that direction.
Unidirectional
Which Fabrics are made where the major fibres are woven so that they run in 2 directions?
Bi-directional
Fabrics are woven on a large machine called a?
Fabric Loom
are fabrics that consist of chopped fibers that are compressed together. There are many strands oriented in random directions
Mat Fabrics
The purpose of the Matrix
to hold the reinforcing fibers in the desired position.
________ ________ is used more in aircraft, has 2 parts: Resin, Catalyst used for bonding, and is moisture resistant
Epoxy Resin
For basic applications, the most common type of materials that will be used will come from the manufacturer in ___ FORM.
Raw
The inclusion of one thing within another so that the included thing is not apparent.
Encapsulation
are materials where the matrix material is already saturated into the material.
Pre-Impregnated Materials (Pre-Pregs)
Advantages of using pre impregnated materials:
1) Convenience.(The materials contain exactly the right amount of matrix material)
2) Complete encapsulation. (Using pre-impregnated materials assures the user that all of the reinforcing material fibers are totally enclosed by the matrix material.)
3) All of the matrix is evenly distributed within the fabric, so there is no need to disturb the fibers.
4) Big advantage is speed. Time is money, especially in aviation.