Fundamentals Of Composites - Shamsuddin

Question 1

What are the roles of constituents in a composite?

Answer 1

Fibres = Cary load
Matrix =

1) transfers load between fibres
2) protects and holds fibres in place

Question 2

What happens when the composite is loaded in transverse? (90 degrees or 22)

Answer 2

Fibre and matrix carry the same load. I.e. no reinforcement efficiency

Question 3

Describe basically, UD PMC tape properties.

Answer 3

• common
• most consistent performance
• most expensive
• high performance application
• poor drape -> poor mould-ability
• lack of through thickness reinforcement

Question 4

Describe basically, Woven PMC Properties

Answer 4

• improved drape and damage tolerance
• fabric integrity is maintained by interlocking
• reduce stiffness and strength = low performance
• ‘crimp’ reduces compression strength