T-SHAPED STRINGER WITH A ROUNDED WEB END AND METHOD OF MANUFACTURING IT

摘要

A method of manufacturing T-shaped stringers made of composite material, including a second shaping step for shaping laminates into L-shaped preforms, which includes providing a set of tools formed by a fixed tool comprising a lower portion and an upper portion, and a moveable tool comprising a lower element and an upper element. It also includes the segment of the laminate intended for the foot of the preform being located between the lower portion and the upper portion of the fixed tool, and the segment of the laminate intended for the web of the preform being located between the lower element and the upper element of the moveable tool. It further includes vertically moving the moveable tool to progressively bend the web of the preform supporting it on a vertical wall of the fixed tool. The end of its web adopts a rounded shape.

主权项

1. A method of manufacturing T-shaped stringers made of composite material, comprising:
a first tape laying step for laying tape on two planar laminates; a second shaping step for shaping the planar laminates into two L-shaped preforms; and, a third step in which the two preforms are attached to one another and cured to obtain the T-shaped stringer;the second step comprising:
providing a set of tools formed by a fixed tool comprising a lower portion and an upper portion, and a moveable tool comprising a lower element and an upper element, the fixed tool and the moveable tool being arranged at a pre-determined distance from one another; arranging each planar laminate in the set of tools such that the segment of the laminate intended for the foot of the L-shaped preform is arranged between the lower portion and the upper portion of the fixed tool and the segment of the laminate intended for the web of the L-shaped preform is arranged between the lower element and the upper element of the moveable tool; and, vertically moving the moveable tool at a pre-determined speed to progressively bend the web of the preform, supporting it on a vertical wall of the fixed tool,such that the end of its web adopts a rounded shape.