Abstract: Disclosed is an apparatus for ultrasonic inspection of a multi-layered, ML, plate with a stiffener attached on a first surface of the ML plate. The apparatus includes a transmitter directing a first ultrasonic beam along a first guiding medium to the ML plate, along a first axis at an angle to the first surface, the first axis being within a transmission angle with respect to a first normal perpendicular to the first surface, and a receiver for receiving a transmitted ultrasonic beam originating from the first beam after passing through the ML plate along a second axis of a second guiding medium for directing the transmitted beam. The apparatus is configured for setting the transmission angle of the first axis of the first beam to let the second axis pass through a location beneath the stiffener beneath the first surface to which the stiffener is attached.

Abstract: A method of anodizing an article of aluminum or aluminum alloy for forming a porous anodic oxide coating comprises an immersion step of immersing the article to be anodized in an electrolyte in a tank, wherein the electrolyte comprises an aqueous solution of 5-50 g/l sulphuric acid and 2-50 g/l phosphoric acid, and arranging the article as an anode with respect to one or more counter electrodes as arranged cathodes in the electrolyte, and an anodizing step of applying a positive anode voltage Va to the article, while the temperature of the electrolyte is in the range of 33-60° C.

Abstract: An airfoil-shaped body having a variable outer shape, comprising: a first skin, defining a suction surface, a second skin, defining a pressure surface and connected to the first skin at least at a leading edge and/or a trailing edge of the airfoil-shaped body, at least one elongate stiffening beam, arranged inside a cavity of the airfoil-shaped body and secured to at least one of said first and second skins, the stiffening beam including at least a first and a second beam section arranged one after the other and a joining member, arranged between end portions of the beam sections and connected thereto, said joining member being adapted to allow relative movement between the beam sections by an elastic deformation; and an actuator that is operationally associated with said elongate stiffening beam, wherein, upon operating the actuator, the first beam section is moved with respect to the second beam section, or vice versa, changing the orientation of the beam sections with respect to each other, which causes a

Abstract: An integrated panel made of interconnected laminates includes stacked first and second metal layers (5, 5?, 5?) and fibre-reinforced adhesive layers (19) between adjacent metal layers. At the location of the transition from the outer surface (7) of the first outer metal layer (5) to the outer surface (7) of the second outer metal layer (4) is located a filler (11). The panel further includes a cladding layer (14), which includes at least one fibre material layer (15, 24) that extends over the filler (11) and the adjacent outer surface regions (12, 13) of the outer metal layers (5, 4) located on opposite sides and which are adhered to the outer surface regions.

Abstract: Disclosed is a panel for an aircraft structure, including a laminated skin of layers of metal of which in each case two are joined together by a fibre-reinforced adhesive layer, as well as a laminated doubler of layers of metal and at least one fibre-reinforced adhesive layer in each case between two layers of metal, wherein the doubler has a smaller size of perimeter than the skin and is bonded to an outermost layer of metal of the laminated skin by a fibre-reinforced supplementary adhesive layer, with the feature that at least one part of the perimeter of the fibre-reinforced supplementary adhesive layer is staggered inwards relative to the corresponding perimeter of the doubler and that that part of the inwards-staggered perimeter of the fibre-reinforced supplementary adhesive layer is delimited by a glued edge. Also disclosed is a method for manufacturing such a panel.

Abstract: An airplane wing comprises a main wing and a flap system that has a flap at the trailing edge of the main wing. An elongate flap track member is connected to the main wing in such a manner that it can be moved substantially in its longitudinal direction and is guided by supporting bearing elements relative to the main wing between a forward retracted position and a rearward extended position. The flap is rotatably connected to the rear end of the flap track member in such a manner that it can rotate about a rotation axis that extends substantially parallel to the trailing edge of the main wing, so that the flap moves together with the flap track member when the flap track member is moved and so that the flap can be rotated about the rotation axis mechanically independently of the movement of the flap track member. The flap system comprises an actuator system having two actuators.

Abstract: A method for joining together constructional parts which are made of a composite material and extend transversely to one another, such as a flange and a web of a profile, includes the steps of: placing the constructional parts in the desired position with respect to one another so as to form a connecting region in which one of the constructional parts abuts against or in proximity to the other constructional part, causing a thermoplastic material to flow out into the connecting region, fusing together the constructional parts under the influence of heat and pressure.

Abstract: The invention relates to a method for bonding a thermoplastic polymer to a thermosetting polymer component, the thermoplastic polymer having a melting temperature that exceeds the curing temperature of the thermosetting polymer. The method comprises the steps of providing a cured thermosetting polymer component comprising an implant of a thermoplastic polymer at least at the part of the thermosetting polymer component to be bonded, locating a thermoplastic polymer in contact with at least the part to be bonded, heating the assembly to the melting temperature of the thermoplastic polymer, whereby the thermoplastic polymer of the implant melts and fuses with the thermoplastic polymer, and cooling the assembly.

Abstract: The invention relates to a method for bonding a thermoplastic polymer to a thermosetting polymer component, the thermoplastic polymer having a melting temperature that exceeds the curing temperature of the thermosetting polymer. The method comprises the steps of providing a cured thermosetting polymer component comprising an implant of a thermoplastic polymer at least at the part of the thermosetting polymer component to be bonded, locating a thermoplastic polymer in contact with at least the part to be bonded, heating the assembly to the melting temperature of the thermoplastic polymer, whereby the thermoplastic polymer of the implant melts and fuses with the thermoplastic polymer, and cooling the assembly.

Abstract: A laminate of metal layers and plastic bonding layers situated between the metal layers includes two external metal layers extending substantially continuously and at least one internal metal layer. At least one of the internal metal layers has at least one opening, and at the position of the opening the other metal layers and plastic bonding layers are bonded together to the form of a packet of lower thickness. The relatively thick parts of the laminate can be used for the transfer of forces.

Abstract: A method for joining together constructional parts which are made of a composite material and extend transversely to one another, such as a flange and a web of a profile, includes the steps of: placing the constructional parts in the desired position with respect to one another so as to form a connecting region in which one of the constructional parts abuts against or in proximity to the other constructional part, causing a thermoplastic material to flow out into the connecting region, fusing together the constructional parts under the influence of heat and pressure.

Abstract: In a laminate, comprising at least one series of metal layers and fiber-reinforced plastic layers which are attached to one another, at least two different series are provided, these series including a transition, and at the location of the transition at least one of the internal layers is discontinuous and all the other layers are continuous.

Abstract: A joint construction in a laminate of, alternately, at least two metal layers and at least one plastic layer accommodated between them comprises metal layers which each have at least two sections. The two sections of at least one outer metal layer overlap one another and are fixed to one another at the location of the overlap by means of an adhesive. Each metal layer has overlapping sections which are fixed to one another by an adhesive.

Abstract: A joint construction in a laminate of, alternately, at least two metal layers and at least one plastic layer accommodated between them comprises metal layers which each have at least two sections. The two sections of at least one outer metal layer overlap one another and are fixed to one another at the location of the overlap by means of an adhesive. Each metal layer has overlapping sections which are fixed to one another by an adhesive.

Abstract: A device for forming a double-curved object comprises a frame, two elongate clamping heads which are arranged parallel to one another on the frame, a support with an exchangeable shaping die, on either side of which support there are clamping heads, and drive means for moving the clamping heads to and fro transversely with respect to their longitudinal direction, along the shaping die in the direction of a working stroke, during which the sheet is stretched and formed, and a return stroke. At least one of the clamping heads is provided with a double-curved shaping piece.

Abstract: Elements to be joined to one another are clamped such that parts thereof which face one another and are to be joined are immovable with respect to one another. A mandrel is brought into contact with the parts in the region of a joint to be produced. The mandrel is cyclically moved with respect to the elements such that frictional heat is generated and the parts are brought into a plastic state. The distribution of frictional heat is influenced in at least one of the elements such that the frictional heat is essentially concentrated in the parts of the at least one element which have been brought into the plastic state. The parts brought into the plastic stat are allowed to cool in order to form the joint.