Abstract: The invention relates in particular to a method for manufacturing an element made of composite material from chips of at least one first recycled element, said chips being grouped into families according to chip types. After obtaining (125) a plurality of desired characteristics of said element made of composite material and after obtaining, from the desired characteristics and using a knowledge base (135) comprising a set of composition rules, each composition rule associating characteristics of a sample formed of chips of at least one second recycled element with at least one chip type forming said sample and an arrangement of the chips forming said sample, at least one composition rule of said set, at least one chip type and a chip arrangement to be used for manufacturing said element made of composite material are estimated (130) using said at least one obtained rule.

Abstract: The present invention relates to a chip made from composite material containing carbon fibres in a cured adhesive, said chip having a substantially constant thickness defined between two parallel opposite faces of the chip, the surface of each face comprising carbon fibres that are at least partially not included in the cured adhesive.