Abstract:
A honeycomb structure comprising carbon-fiber non-woven, sandwich structure comprising the said honeycomb structure, and process for the production of the said honeycomb structure.
Abstract:
Method for manufacturing a dry textile preform, including: pulling a textile fabric sheet; grabbing a first side portion of the sheet between rollers, the rollers forming a first flange of the first side portion of the sheet inclined at a predeterminable angle to the plane of extension of the sheet; grabbing a second side portion of the sheet opposite to the first side portion between other rollers, the other rollers forming a second flange of the second side portion of the sheet inclined at a predeterminable angle to the plane of extension of the sheet; adjusting a difference between the rolling speed of the pair of first rollers and the rolling speed of the pair of second rollers to form a curvature radius of the sheet; and adjusting distance between the rollers perpendicular to the movement direction of the sheet to form a web portion between the first flange.
Abstract:
A method of repairing an affected area of a component of a fiber-reinforced polymer composite, especially having elongate or continuous reinforcing fibers in a polymer matrix, is disclosed. The method includes: providing a controlled atmosphere around the affected area of the component; heating the component in the affected area within the controlled atmosphere to cause pyrolysis or depolymerization of the polymer matrix in the affected area and thereby to remove the polymer matrix from the affected area; introducing polymer resin into a space left by the pyrolyzed or depolymerized matrix to refill the affected area.
Abstract:
An assembly, configured in particular in the form of an aircraft assembly, comprises a plurality of individual components composed of a fibre-reinforced composite material. An edge section of at least one individual component is sealed by means of a sealing tape which contains reinforcing fibres and a curable plastics material.
Abstract:
A honeycomb structure comprising carbon-fiber non-woven, sandwich structure comprising the honeycomb structure, and process for the production of the honeycomb structure.
Abstract:
A process for the recycling of wastes from webs or strands made of prepreg wastes comprising a first reactive resin, having the following steps: homogenization of prepreg wastes, dispersion of fillers and/or additives in a second reactive resin, mixing of the second resin, homogenized prepreg wastes and further processing of the mixture of resin, fillers and/or additives and prepreg wastes to produce molded workpieces.
Abstract:
A method of recycling scraps or offcuts of uncured composite material, such as pre-impregnated or “prepreg” scraps or offcuts having reinforcing fibres and uncured polymer matrix material, includes introducing the scraps or offcuts into a mixing device directly; mixing the scraps or offcuts in the mixing device to blend uncured polymer matrix material and reinforcing fibres of the scraps or offcuts into a generally homogenous or consistent mixture; and feeding or conveying the mixture from the mixing device into a shaping mechanism to form a component or semi-finished product and preferably on a continuous basis.
Abstract:
A method for joining two components of a meltable material comprises the steps of providing a first component having a first border region and a second component having a second border region, placing the second component relative to the first component so as to form an overlap between the first border region and the second border region under a gap between the first border region and the second border region, continuously heating opposed sections of the first border region and the second border region at the same time through at least one energy source arranged in the gap at least partially, continuously providing a relative motion of the at least one energy source along the first border region and the second border region in the gap, and continuously pressing already heated sections of the first border region and the second border region onto each other.
Abstract:
A system and method for producing a composite component, especially for continuous production of such composite components, includes a feeding device for feeding one or more layers of reinforcing material from a material supply along a process path, a resin application device for applying a resin matrix to the reinforcing material fed along the process path, and a forming device configured to shape or mould a profile of the reinforcing material and the resin matrix applied thereto to form a composite component as the reinforcing material is fed or conveyed along the process path.
Abstract:
A method of producing a composite preform having a profile with variable profile height or width is provided. The method includes: providing a plurality of first fiber layers overlapping or upon one another in or substantially parallel to a primary plane; inserting a second fiber layer via a guide member between two of the first fiber layers at an edge region of the preform profile, such that the second fiber layer extends substantially parallel to the first fiber layers; and positioning the edge region of the preform profile, and thus respective edge regions of the first fiber layers, out of the primary plane to set or determine a dimension of the preform profile in the primary plane.