摘要:
This invention provides a method for producing a structural component, particularly in the aerospace sector. An unhardened prepreg fabric (6) is formed from a composite fibre material, hardenable at a first hardening temperature, into a predetermined shape. The unhardened prepreg fabric (6) is then connected to at least one hardening part (12, 13) of a composite fibre material partially hardened at a second hardening temperature for holding the unhardened prepreg fabric (6) in the predetermined shape, wherein the second hardening temperature is lower than the first hardening temperature. In a further method step the unhardened prepreg fabric (6) connected to the at least one holding part (12, 13) is hardened at the first hardening temperature to form the structural component. The idea on which this invention is based consists in replacing expensive tools of special steel previously used for holding dimensionally unstable prepreg fabrics with at least one holding part (12, 13) of composite fibre materials, wherein the at least one holding part (12, 13) has a lower hardening temperature than the prepreg fabric (6), and can therefore be produced with a lower cost tool.
摘要:
The invention relates to a method for determining at least one characteristic parameter of blisters (3, 31) of a CRP specimen (1), in particular a specimen of prepreg material, for aerospace, comprising the following method steps: presenting the specimen (1); irradiating the specimen (1) with a predetermined spectrum of electromagnetic radiation (11); recording the interaction between the specimen (1) and the electromagnetic radiation (11) in a data record (13); and determining the at least one characteristic parameter from the recorded data record (13).
摘要:
Disclosed is a connecting arrangement for joining two stiffening elements (1, 2) of an aircraft or spacecraft. The stiffening elements (1, 2) have different cross-sectional profiles with at least one base section (3, 4) and at least one rib section (5, 6). In said connecting arrangement, at least one base section connecting element (7, 7') can be adapted to the geometrical shape of the base section (3) of the first stiffening element (1) on one side and to the geometrical shape of the base section (4) of the second stiffening element (2) on the opposite side and can be fixedly connected thereto. Furthermore, at least one rib section connecting element (8, 8') can be adapted to the geometrical shape of the rib section (5) of the first stiffening element (1) on one side and to the geometrical shape of the rib section (6) of the second stiffening element (2) on the opposite side and can be fixedly connected thereto. A shell component comprising at least two stiffening elements (1, 2) that have different cross-sectional profiles is equipped with said connecting arrangement.
摘要:
Die vorliegende Erfindung schafft ein Verfahren zur Herstellung eines Profils aus Faserverbundwerkstoff, insbesondere im Luft- und Raumfahrtbereich, mit folgenden Schritten: Zunächst wird ein Vorgelege (3), insbesondere aus vorimprägniertem Fasermaterial, in einen Vakuumsack (7) eingepackt. Anschließend werden Stützelemente (17, 18) an das eingepackte Vorgelege (3) zum Abstützen desselben angelegt. Danach wird der Vakuumsack (7) mit einem Vakuum (P1) beaufschlagt. Weiterhin anschließend wird das Vorgelege (3) zu dem Profil unter Einwirkung von Wärme, insbesondere im Autoklaven, ausgehärtet. Vorteilhaft lassen sich bei dem erfindungsgemäßen Verfahren die Stützelemente (17, 18) aus einem günstigen Material, insbesondere Aluminium, anstelle von sehr teurem Nickel-36 Stahl ausbilden, da die Stützelemente (17, 18) mittels des Vakuumsacks (7) von dem Vorgelege (3) in Längsrichtung (8) mechanisch entkoppelt sind, so dass eine Bewegung der Stützelemente (17, 18) in der Längsrichtung (8) relativ zu dem Vorgelege (3) ermöglicht ist.
摘要:
The present invention relates to a production method for a workpiece (15) composed of a fibre-composite material, having the following steps: at least one support means (3) is provided. A main material (6) composed of a pre- impregnated fibre semi-finished product and/or of a secondary material (7) are/is applied to the at least one support means (3) in order to form at least two blank-mould areas (1, 10), in such a manner that at least one of the at least two blank- mould areas (1, 10) has the main material, and at least one of the blank-mould areas (1, 10) has the secondary material. The blank-mould areas (1, 10) are pressure-bonded to one another to form a workpiece blank (14) such that the at least one support means (3) is provided on a surface of the workpiece blank (14). The at least one support means (3) and the secondary material (7) are removed from the workpiece blank (14) in order to form the workpiece (15).
摘要:
Disclosed is a fiber composite part (1) for an aircraft or spacecraft, comprising electrically conductive fibers (6) in at least some sections. The fibers (6) are coupled to an electric power source to apply electricity in order to heat the fibers (6) and/or measure the electric resistance of the fibers (6).
摘要:
Verfahren zur Herstellung eines profilierten Faserverbundwerkstoff (FVW)-Halbzeugs aus einem Halbzeug (2) aus Trockenfaser oder Prepregmaterial, das in seiner Längsrichtung (L) durch eine Verformungs-Vorrichtung (1) bewegt wird, mit einem Hindurchbewegen des Halbzeugs (2) auf einer Trägerfolie in Längsrichtung (L) einer Verformungs-Vorrichtung (1) zwischen den einander zugewandten Verformungskonturen von Werkzeugteilen (11 a, 12a), deren Verformungskonturen der Querschnitte der Werkzeugteile (11 a, 12a) sich von einer Querschnittskontur im Eingangsbereich kontinuierlich zu einer Verformungskontur im Ausgangsbereich ändern, und mit einem In-Schwingung-Versetzen eines Auflageteils im Einzugsbereich der Verformungs-Vorrichtung (2) derart, dass aufgrund der zwischen dem Auflageteil und dem Halbzeug entstehende Reibungswärme das Halbzeug in einen verformbaren Zustand versetzt wird, wobei die Geschwindigkeit der Bewegung des Halbzeugs (2) in Abhängigkeit einer Temperatur des Halbzeugs geregelt wird, sowie Vorrichtung zur Durchführung des Verfahrens.
摘要:
Disclosed is a method for producing a profiled semifinished fiber composite (FC) product from a semifinished product (2) that is made of dry fiber or prepreg material and is moved through a shaping device (1) in the longitudinal direction (L) of the semifinished product (2). The semifinished product (2) is moved through the shaping device (1) on a support film in the longitudinal direction (L) of the shaping device (1), between the facing shaping contours of tool parts (11a, 12a). The shaping contours of the cross-sections of the tool parts (11a, 12a) continuously change from a cross-sectional contour in the feeding zone to a shaping contour in the discharge zone. Furthermore, the support piece in the drawing-in zone of the shaping device (2) is made to oscillate such that the semifinished product is transformed into a shapeable state as a result of the frictional heat generated between the support piece and the semifinished product. The rate of movement of the semifinished product (2) is regulated in accordance with a temperature of the semifinished product (2). Also disclosed is an apparatus for carrying out said method.
摘要:
The invention relates to a method and to a tool (1, 48) for producing a T-stringer, in particular in air travel and space travel. The method is characterised in that two intermediate strips (3, 4) are superimposed, sections (5, 6) of said intermediate strips (3, 4) being associated with a stringer base (60) that is to be formed, are separated from each other by means of separation films (7, 8) and the sections (14, 15) of the intermediate strips (14, 15) associated with a stringer rod (61) are brought into direct contact, in particular in a material fit. In a further method step, the sections (5, 6) of the intermediate strips (3, 4) associated with the stringer rod (61) that is to be formed are clamped in a clamping device (1). In another method step, the sections (5, 6) that are associated with the stinger base (60) that is to be formed, are folded in the counter direction (28, 29) by means of an unfolding pin (25) and pressed counter to the corresponding pressure surfaces (23, 24) of the clamping device (1) by means of a pressing cylinder (37), such that the sections (5, 6) are aligned exactly. Subsequently, only the folded intermediate strips (3, 4) are hardened in order to form the T-stringer that is to be produced. The invention method has an advantage over known methods for producing T-stringers in that a smaller number of steps are required in order to produce the T-stringer, and said steps could easy be automated.
摘要:
The invention relates to a method and to a tool (1, 48) for producing a T-stringer, in particular in air travel and space travel. The method is characterised in that two intermediate strips (3, 4) are superimposed, sections (5, 6) of said intermediate strips (3, 4) being associated with a stringer base (60) that is to be formed, are separated from each other by means of separation films (7, 8) and the sections (14, 15) of the intermediate strips (14, 15) associated with a stringer rod (61) are brought into direct contact, in particular in a material fit. In a further method step, the sections (5, 6) of the intermediate strips (3, 4) associated with the stringer rod (61) that is to be formed are clamped in a clamping device (1). In another method step, the sections (5, 6) that are associated with the stinger base (60) that is to be formed, are folded in the counter direction (28, 29) by means of an unfolding pin (25) and pressed counter to the corresponding pressure surfaces (23, 24) of the clamping device (1) by means of a pressing cylinder (37), such that the sections (5, 6) are aligned exactly. Subsequently, only the folded intermediate strips (3, 4) are hardened in order to form the T-stringer that is to be produced. The invention method has an advantage over known methods for producing T-stringers in that a smaller number of steps are required in order to produce the T-stringer, and said steps could easy be automated.