摘要:
A production method for producing molded articles from fiber composites, superparamagnetic particles are selected which become coupled to an external alternating magnetic field. These superparamagnetic particles are added to a resin portion of a strip-shaped starting material further comprising reinforcing fibers. The strip-shaped starting material is then continuously advanced, and, while being advanced, heated by coupling-in an external alternating magnetic field to which the superparamagnetic particles in the resin portion become coupled. Next, the heated starting material is continuously molded into a molded article; and the resin portion in the molded particle is cured.
摘要:
A fiber composite component comprising at least two, first and second partial elements (1, 2) bordering one another, each having a fiber structure (3, 4) and different matrix systems which respectively embed the fiber structure (3, 4) and cure differently from a liquid state, can be produced with an increased stability of the joint between the two partial elements (1, 2) in that first the matrix system of the first partial element (1) is liquefied and thereby penetrates irregularly into the region of the bordering second partial element (2), in that subsequently the matrix system of the second partial element (2) is liquefied and in that the matrix systems are cured. The forming of the irregular boundary surfaces causes an intermeshing or interlocking of the matrix systems with one another, whereby a boundary surface (5) with an increased shear strength is created.Alternatively, the first partial element is consolidated with a fiber structure (102a) unwetted by the matrix system (103) while leaving a transitional region (104), intended for adjoining to the second partial element (105), and subsequently the second partial element (105) is consolidated once the matrix system (106) of the second partial element (105) has penetrated into the transitional region (104) of the first partial element (101).
摘要:
The invention relates to a method for producing a fibre composite component, comprising the steps: introduction of a first body (12), consisting of fibres and a matrix material, into a mould (10), said first body (12) having a continuous first body edge (18); the first body (12) is irradiated with microwaves (28) to produce a fibre-composite component. According to the invention, the first body (12) is introduced into the mould (10) in such a way that at least parts of the first body edge (18) are brought into contact with the mould (10).
摘要:
An apparatus includes at least one boom including a tip and a foot and being designed and arranged to be rolled up to form a roll. The tip is located in a radial inward region of the roll and the foot being located in a radial outward region of the roll. The apparatus further includes a unit being designed and arranged to unfold the at least one boom and including a bearing being designed and arranged to cooperate with the foot in a way that the boom in the region of the bearing at the beginning of the unfolding process has an enlarged cross section. Especially, the apparatus may be used in space technology for unfolding a solar sail.
摘要:
A fiber composite component comprising at least two, first and second partial elements bordering one another, each having a fiber structure and different matrix systems which respectively embed the fiber structure and cure differently from a liquid state is produced by liquifying the matrix system of the first partial element so that it either penetrates irregularly into the region of the bordering second partial element or leaves an unwetted region in the first partial element adjacent the second partial element, and subsequently liquifying the matrix system of the second partial element so that it can be cured abutting the irregular boundary surfaces of the matrix system of the first partial element. The intermeshing or interlocking of the matrix systems with one another and the fibers increase shear strength.
摘要:
The invention relates to a method for producing a fiber composite component, comprising the steps: introduction of a first body (12), consisting of fibers and a matrix material, into a mold (10), said first body (12) having a continuous first body edge (18); the first body (12) is irradiated with microwaves (28) to produce a fiber-composite component. According to the invention, the first body (12) is introduced into the mold (10) in such a way that at least parts of the first body edge (18) are brought into contact with the mold (10).