Fiberglass is the trade name for a man-made fiber that also may be called fibrous glass or glass wool. A fiber is a particle that is at least three times as long as it is wide. The main fiber-forming substance in fiberglass is glass.
Fiberglass was first used in the 1930s for home furnace filters and insulation.
Fiber Glass is a composite material. Composite materials are formed by the combination of two or more materials that retain their respective characteristics when combined together to achieve superior properties. The main components of composites are reinforcing agents and matrix. The fibers, particulates and whiskers act as the reinforcement and provide most of the stiffness & strength. The matrix binds the reinforcement together. Other substances such as fillers are used to reduce the cost and improve process ability and dimensional stability.