Sandvik Coromant Machining carbon fibre materials - Manual (Page 11)

Unidirectional reinforcement (UD), in which maximum •
strength and stiffness are obtained in the direction of the
fiber
Properties:
- highest strength in direction of fiber orientation
- bad handling features
- critical machining due to high delamination risk
Planar reinforcement, two-dimensional woven fabric •
Properties:
- uniform strength in all directions
- better handling features
- lower delamination risk
Fiber Orientation and Structure
SANDVIK COROMANT USER’S GUIDE - COMPOSITE SOLUTIONS 11