Abstract: A method for manufacturing a part made from composite material of a thermoplastic or thermosetting matrix reinforced with fibers includes producing a structure of fibers, that is optionally pre-impregnated. The method further includes aligning and juxtaposing fibers, while stretching them between return elements, and keeping them separated from each other, so as to obtain a first layer. The method includes superimposing, on said first layer, a second layer obtained in an identical manner to the first, in which the fibers are parallel to those of the first layer and kept apart from it. The method includes repeating the superimposing operation until the desired thickness is obtained and stiffening the material making up the matrix (M) by a method that suits its nature.

Abstract: The method for warning of risk of rupture or deformation of a part made of a composite material when it is subjected to a force relates to a part including a fibre-reinforced thermoplastic or thermohardenable matrix. The method includes arranging the fibers in a lattice structure produced by winding fibers to form bars that join together or intersect at nodes. The method includes designing at least one bar of the lattice and/or integrating, into the part, at least one additional bar with a determined location and tensile strength and associating, with the at least one bar, inside the part, a sensor to detect the rupture thereof. The method further includes associating, with the sensor, an emitter, outside the part, for a signal relating to the rupture.

Abstract: A method for producing a part made of composite material includes adding a thermoplastic or thermosetting matrix around a preform of a reinforcing fiber mesh made by filament winding around the spurs or the like of a frame. There is winding in addition to the fibers on one or several reels within the matrix, the axes of the spurs or the like and those of the one or more reels having different orientations, so as to provide the mesh of fibers with a three-dimensional shape.

Abstract: A method for manufacturing a ring-shaped frame made from composite material includes slipping at least one tubular casing of dry fibers over an assembly having at least two coaxial sub-assemblies axially movable relative to one another and between which a peripheral groove is defined. The assembly is disposed in the general plane of the frame. A portion of the tubular casing is forced into the groove and the two sub-assemblies are tightened so as to hold a portion of the tubular casing in the groove. Two parts of the casing that are outside the groove are coupled, and the obtained coupling is folded onto one of the two sub-assemblies in order to obtain a preform of dry fibers. The preform is solidified by polymerization.

Abstract: The single-use valve to be installed on a line for transporting a fluid includes a tubular body, which is intended to be placed on the line and contains a mobile element that is able to take up two positions in the tubular body. Each position allows the fluid to pass through the tubular body or not, one being a standby position, while the other is an active position. Inside the tubular body, a driver able to move the mobile element such that the mobile element passes from its standby position to the active position. The driver includes a pretensioned elastic device. Outside the tubular body, a device for maintaining the pretension connects to a controller able to deactivate the device for maintaining the tension.

Abstract: The fixing device for the assembly and quick release of objects includes a holding element that can be fixed to one of the objects to be held together, and a retaining device that can be fixed to another one of the objects to be held together and engage the holding element. The retaining device includes a plurality of separable parts that can be held closely together around the holding element by a disengageable pre-tensioning device. The separable parts are connected to each other by an elastically deformable mechanisms which stretch to in order to draw the parts located at a distance from each other together, while the pre-tensioning device includes a link wound around the parts in order to keep them closed on the holding element, at least one end of the link being fixed to a tensioning mechanism.

Abstract: The invention relates to a shock-absorber device intended to connect two parts, one part moves relative to the other part, owing solely to an initial temporary thrust provided by a driving device, thereby shifting from an initial position to an end position. The device includes a mechanical system connecting the parts in relative movement, which also includes a kinetic energy accumulator designed to be supplied by the above-mentioned initial thrust, and to return at least the exact amount of energy required to allow the mobile one part to reach the end position.

Abstract: Damping skin for protecting composite parts includes a composite material having at least two superposed layers, namely a first layer formed from the juxtaposition of hollow spheres, which is intended to be applied and fixed, either directly or indirectly, to the surface of the part to be protected and a second layer covering the first and formed from a wall made of a material having plastic deformation properties.

Abstract: The invention relates to a fixing device for the assembly and quick release of objects. The device includes an attaching element that can be fixed to one of the objects to be held together, and a holder that can be fixed to the other object and designed to hold the attaching element. The holder includes a plurality of separable parts that can be held closely together around the attaching element by a disengageable pre-tensioning device. The separable parts include of parts of the holder connected to each other by an elastically deformable mechanisms which stretch to in order to draw closer the parts located at a distance from each other, while the pre-tensioning device includes a link wound around the parts in order to keep them closed on the attaching element, at least one end of the link being fixed to a tensioning mechanism.