Module 6 None-Metallic Materials Objective Five

Question 1

Monolithic Material

Answer 1

Consist of a single material

ex: single phase plastic

Question 2

Composite

Answer 2

the combination of two or more different materials bonded together to provide an improved combination of properties.
Binder (Matrix) and reinforcement

Question 3

Matrix

Answer 3

holds the reinforcement in an orderly pattern, and transfer load to reinforcements

Question 4

Reinforcement

Answer 4

usually stronger/stiffer then the matrix, and gives these properties to the composite

Question 5

Interface

Answer 5

the surface between the matrix and the reinforcement where a physical, mechanical or chemical discontinuity occurs

Question 6

Fiber reinforced composites:

Answer 6

“string and glue materials” use continuous or discontinuous fibres, that carry most of the force and are embedded in the matrix of another. The fibres are thin, they are flexible

Question 7

Laminar (Laminated) Composites

Answer 7

have alternate layers (lamina or ply) of material bonded together in some manner to include thin sandwiches of material giving strength in two directions (bidirectional)

Question 8

Particulate (aggregate) composites

Answer 8

consist of discrete particles of one material surrounded by a matrix of another material
Ex: concrete, ceramic metal, polycrystalline diamond

Question 9

Dispersion Strengthened Composites

Answer 9

particulate composite where small particles are added to the matrix of a material to help the matrix resist deformation, which makes it harder and stronger

Question 10

Particle Reinforced Composites

Answer 10

similar to dispersion strengthened composites, but the particle size is larger. The particles contact one another, and carry a major portion of the load.
Low ductility

Question 11

Metal Matrix Composites (MMC)

Answer 11

metal alloys reinforced with fibres/whiskers/particulates/wires usually in random orientation giving strength in three dimensions