Filament Winding — Important Parameters

Fiber Material

When it comes to material selection, it is crucial to decide the material type to be used. Fiber types help to determine the fundamental properties of the composite products. Basically, the range of the typical properties of the fibers are roughly known, thus it is helpful to consider whether material can achieve the required properties with other process parameters in the first step of the manufacturing. The most popular fiber types used in filament winding are carbon fiber and glass fiber.


The one that must be taken into account for the second step is the selection of the resin. After the selection of the fiber type, the resin must be compatible and convenient for the fiber in order to achieve the required specific properties. The most popular resin types used in filament winding are polyester and epoxy resins.


Unlike isotropic materials such as steel, aluminium; fibers have different characteristics and mechanical properties in different directions. It is called orthotropic material. Fibers have a strong tensile strength in the unidirectional directions. Filament winding enables to use of these characteristics of the fibers by placing them in the desired locations to correspond required performance.

Basic illustration of helical winding
Hoop Winding at 90°



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