Part 13: Composites

Question 1

What are the two phases in a composite

Answer 1

Matrix (continuous) and dispersed (discontinuous and surrounded by the matrix)

Question 2

What does the matrix phase do?

Answer 2

Transfer stress to the dispersed phase and protect dispersed phase from the environment

Question 3

What are fiber reinforcements used for?

Answer 3

Strengthening

Question 4

What are the methods of manufacturing fibers?

Answer 4

1. Pultrusion: pull fibers through a thermosetting resin
2. Prepreg: two sheets combine between the fibres
3. Filament winding: fiber is wound around a cylinder, then add more thermosetting resin