Filament winding (also called filament winding or filament winding) is a manufacturing technique for the production of composite materials, generally in the form of cylindrical structures. The process consists in winding filaments subjected to various stresses on a male mold or mandrel. The mandrel rotates as a carriage moves horizontally, depositing the fibers according to the desired pattern. The most common filaments are carbon or glass and are embedded in synthetic resin while deposited and rolled. Once the mandrel is completely covered with the desired thickness, the mandrel is placed in an oven to solidify (cure) the resin. Once the resin has cured, the mandrel is removed, leaving the final product with its internal recess.
The filament winding process is very suitable for automation, since it is thus possible to precisely control the tension of the filaments. If the filaments are placed with a high tension then an end product having greater rigidity and strength is achieved, whereas if the tension applied to the filaments is low then more flexible products are obtained. It is also possible to control the orientation of the filaments in such a way that the successive layers are crossed or with orientations different from those of the previous layer. The angle at which the fiber is placed will determine the properties of the finished product. A high angle provides greater resistance against crushing, while a low angle pattern (called closed or helical) gives a higher tensile strength. A manufacturer of filament winding machines is Autonational
wiki
