Composite materials and its importance Flashcards
What is the definition of composite materials
A structural material form by combining 2 or non homogenous substances which are the matrix substance and strengthening substance.
State 5 examples of composite function
- reinforced substance
- superconductor
- optic fibre
- fibre glass
- photochronic glass
What is the matrix and strengthening substances does reinforcement concrete contain? State their characteristics
Matrix substance: Steel bare and wire mesh
- corrode easily
- high stretching strength
- low compression strength
Strengthening substance: Concrete
- Low stretching point
- high compression point
- resistant to corrosion
State the characteristics of reinforcement concrete
- high compressing strength
- does not corrode easily
- high stretching strength
What is fibre glass compose of? State the characteristics of the materials
Matrix substance: Plastic
- low melting point
- low boiling point
- light
- flammable
Strengthening substance: glass
- high stretching point
- chemically inert
- poor heat and electric conductor
What is the characteristics of fibre glass?
- corrosion
- chemical properties?
- Electric and heat conductor?
- stretching strength?
- does not corrode
- chemically inert
- electrical insulator
- heat insulator
- high stretching strength
State the 3 layers that make up opticle fibre.
- protective core
- shealth layer
- inner core
What is the inner core of opticle fibre made of?
Silica fibreglass
What is the shealth layer made of?
Plastic
List 2 advantage of the usage of opticle fibre.
- occupies less space
- carries more data with less interference
- transmit signals at high speed
- low cost
What materials is photochronic glass compose of?
- Glass
- silver chloride
State the characteristics of the material that compose photochronic light
1) Glass
- transparent
- does not absorb UV ray
- not sensitive to light
2) Silver Chloride
- transparent to visible light
- absorb UV ray
- sensitive to light intensity
What is the special ability of photochronic light?
- Have the ability to turn dark when exposed to UV rays
Why do superconductors are so efficient in transporting data?
- Can conduct electric with 0 resistance, without loosing energy
What is superconductor made of?
YBCO
- Yttium (III) carbonate
- Copper (II) carbonate
- Barium carbonate
- oxygen
