Which of the following properties are fiber dominated? Transverse modulus Longitudinal modulus    Transverse thermal expansion Longitudinal thermal expansion   Transverse strength

The properties that are fiber dominated in a composite material are the Longitudinal modulus and the Longitudinal thermal expansion.

Here's why:

1. Longitudinal modulus: The longitudinal modulus is the measure of the stiffness of the composite material in the direction of the fibers. Since the fibers are the primary load-bearing component in the composite, the longitudinal modulus is largely determined by the properties of the fibers themselves.

2. Longitudinal thermal expansion: Similarly, the longitudinal thermal expansion, which measures how much the composite material expands or contracts in the direction of the fibers when heated or cooled, is also primarily determined by the properties of the fibers.

On the other hand, the transverse modulus, transverse thermal expansion, and transverse strength are not fiber dominated. These properties are influenced more by the matrix material and the interaction between the fibers and the matrix.