Molding core for the manufacture of a stiffener hollow piece made of a structural composite material, and method of manufacturing a piece of composite material structural self - stiffened

摘要

The present invention relates to a core (10) of the molding for the manufacture of a stiffener (30) of structural part (20) of a composite material, said core being intended to be removed and characterized in that it consists of a composite material comprising a porous aggregates are not spherical and / or of the hollow beads, linked together by an organic or inorganic matrix, said composite material being coated with a sealed sheath and antiadhesive, and in that said core is destroyed by a directional jet of water under a pressure greater than 50 bars.