METHOD FOR PRODUCING A STIFFENER ON A SURFACE OF AN ELEMENT TO BE STIFFENED

摘要

The aim of the invention is to provide a method for producing a stiffener (12) on one surface (14) of a stiffened element (10), at least one of the two being made of a composite material not completely polymerized, said stiffener (12) including, along a transverse direction, two contact areas (16.1, 16.2) with the surface (14), between which the stiffener (12) and the stiffened element (10) form a cavity (18) emerging into at least one of the ends of the stiffener (12), comprising the use of a core (24) placed in the cavity (18) and removed from said cavity after polymerization; and characterized in that it involves the use of a core (24) with a first portion (26) having a weak expansion coefficient to ensure the required geometric precision and at least one second portion (28) having an elongation coefficient necessary for enabling the extraction of said portion by traction on one of the ends of said second portion such that a contraction of the section thereof is caused.