Metal/composite assembly method

A method for a structural assembly of a first part made of material comprising a polymer matrix with a second part made of metal, by two opposite surfaces known as assembly faces, along an assembly interface, the method comprising the steps of:

• forming a coupling form on the assembly face of the second part, the coupling form comprising two patterns set at a distance and comprising an extension along a direction normal to the assembly face of the second part;
• stamping the first part with the second part on the assembly interface when a matrix of the first part is in an unconsolidated state to provide the structural assembly;
• over molding the structural assembly with a locking layer comprising a polymer matrix, wherein the locking layer comprises an area that overlaps the first part and an area that overlaps the second part, which oppose a relative displacement of the two parts along a direction normal to the assembly interface;
• before the stamping step, placing an adhesive layer between the assembly faces of the first and second parts;
• wherein the adhesive layer is thermally activable;
• and
• wherein the stamping step is achieved by hot stamping which thermally activates the adhesive layer.