Abstract: A riveted union arrangement between parts of composite material in which, in the area of the union, at least one of the parts (11) is a strengthened directionally part whose lay-up comprises ply packets (13, 13?, 13?) with the optimum direction for carrying out the load transmission in the union inserted between at least one continuous ply (15) along said union area, where each of those ply packets (13, 13?, 13?) has a different length, so that said directionally strengthened part (11) be structured in the area of the union in stretches (17, 17?, 17?) with a different number of ply packets (13, 13?, 13?).

Abstract: Joining arrangement for two boxes (11, 11?) of composite material with an intermediate part (31) and method for manufacturing said intermediate part (31). The joint is effected using rivets between the skins (15, 15?; 17, 17?) of said boxes (11, 11?) and the upper and lower flanges (33, 35) of said T-shaped part (31). The manufacturing method includes the following steps: a) Providing two C-shaped preforms (41, 41?), configured such that their central sections (43, 43?) are parallel with one another and their upper and lower flanges (55, 55?; 57, 57?) are approximately parallel to the end zones of said skins (15, 15?; 17?, 15?); b) Providing two flat preforms (45, 47) to reinforce the flanges (35, 37); c) Forming and curing the part (31) made from said preforms (41, 41?, 45, 47) using an RTM method.

Abstract: The invention relates to a piece made of composite material with areas of different thickness manufactured from a stack of composite material fabrics comprising at least two adjacent areas (11, 15) of different thickness and a transition area (13) between both configured with a single slope (17), in which the stack is structured by: a first and a fourth section formed by at least two continuous fabrics (21, 21?; 29, 29?) extending along the three mentioned areas (11, 13, 15); a second section formed by one or more symmetrical and balanced fabric packets (23) ending in the transition area (13) placed among one or more continuous fabrics (25); a third section formed by a symmetrical and balanced fabric packet (27) extending along the three mentioned areas (11, 13, 15) placed among one or more continuous fabrics (25).

Abstract: The invention relates to a piece made of composite material with areas of different thickness manufactured from a stack of composite material fabrics comprising at least two adjacent areas (11, 15) of different thickness and a transition area (13) between both configured with a single slope (17), in which the stack is structured by: a first and a fourth section formed by at least two continuous fabrics (21, 21?; 29, 29?) extending along the three mentioned areas (11, 13, 15); a second section formed by one or more symmetrical and balanced fabric packets (23) ending in the transition area (13) placed among one or more continuous fabrics (25); a third section formed by a symmetrical and balanced fabric packet (27) extending along the three mentioned areas (11, 13, 15) placed among one or more continuous fabrics (25).