A method for the integration of continuous J shaped spars in extended panels of composite material in which J shaped spars are each arranged on a rectilinear support having at least one right triangle shaped portion, and the spars carried by the respective rectilinear supports are subsequently arranged on a stratified structure carried by a mould. A vacuum bag is created which covers the stratified structure, the rectilinear supports, and the J shaped spars. Holes are created in the vacuum bag at respective connection points made along each rectilinear support. A supporting structure provided with hooking and adjusting elements with the connection points adjusts the position of each hooking and adjusting element with respect to the supporting structure in order to position the rectilinear support in a direction parallel to the vertical so that the position of the end portion of the J shaped spar, with respect to the mould, corresponds to that foreseen by the design.

A fiber composite material containing at least one layer of reinforcing fibers embedded in a polymer matrix, with the polymer matrix being formed by a curable resin and including at least one first region having a first curing property of the resin and at least one second region having a second curing property of the resin, wherein the at least one first curing property is different from the at least one second curing property, a method of manufacturing a composite structure, and a composite structure manufactured in the method.

The invention pertains to a method for integrating a fitting fitted between two wings of a composite profile comprising the steps of: obtaining a preform of a fitting impregnated with a thermosetting resin, comprising two flanges and a rib; pre-curing the laminate preform of the fitting to obtain a partial polymerization of the preform; laying up a laminate preform of the profile so that fibers impregnated with a thermosetting resin included in two of the wings of the laminate preform of the profile are laid up over the two flanges of the preform of the partially polymerized fitting; and completely polymerizing an assembly comprising the laminate preform of the profile and the laminate preform of the partially polymerized fitting while maintaining into contact the flanges of the laminate preform of the fitting with the wings of the laminate preform of the profile.