Abstract:
A method for joining two objects by anchoring an insert portion provided on one of the objects in an opening provided on the other one of the objects. The anchorage is achieved by liquefaction of a thermoplastic material and interpenetration of the liquefied material and a penetrable material, the two materials being arranged on opposite surfaces of the insert portion and the wall of the opening. Before such liquefaction and interpenetration, an interference fit is established in which such opposite surfaces are pressed against each other, and, for the anchoring, mechanical vibration energy and possibly a shearing force are applied, wherein the shearing force puts a shear stress on the interference fit.
Abstract:
A method of providing through-thickness reinforcement of a laminated material (100) which includes a matrix material (130) including a step of creating a locally heated zone (180) in the laminated material so as to locally soften the matrix material by focussing a set of at least two energy beams (160) at a location where through-thickness reinforcement is required and a step of inserting a reinforcement element (140) through the thickness of the laminated material at the location of the locally heated zone to through-thickness reinforce the laminated material.
Abstract:
A method for joining two objects by anchoring an insert portion provided on one of the objects in an opening provided on the other one of the objects. The anchorage is achieved by liquefaction of a thermoplastic material and interpenetration of the liquefied material and a penetrable material, the two materials being arranged on opposite surfaces of the insert portion and the wall of the opening. Before such liquefaction and interpenetration, an interference fit is established in which such opposite surfaces are pressed against each other, and, for the anchoring, mechanical vibration energy and possibly a shearing force are applied, wherein the shearing force puts a shear stress on the interference fit.
Abstract:
The invention relates to a sensor arrangement comprising a transducer which is fixed in a rotatable manner to a shaft which can rotate about a longitudinal axis. Said transducer comprises a transducer element which is provided with a readable coding for an associated sensor element and which is supported by a support sleeve. Said support sleeve is made of a thermoplastic material and is moulded into a recess by means of ultrasonic moulding in an area of the shaft provided for mounting.
Abstract:
A metal member 1 and a resin member 2 are brought into contact with each other without interposing a resin layer between the metal member 1 and the resin member 2. A rotation tool 10, which is being rotated, is pressed against the surface 1a of the metal member 1 in an inclined state so that the inclination angle θ of the axis Q of the rotation tool 10 relative to the normal line P of the surface 1a of the metal member 1 satisfies the condition of 0°
Abstract:
The method according to the invention is suitable for anchoring an anchoring element (1) in an object (21), which anchoring element (1) is compressible in the direction of a compression axis under local enlargement of a distance between a peripheral anchoring element surface and the compression axis. The anchoring element (1) comprises a coupling-in face (1,2) which serves for coupling the mechanical vibrations (5) into the anchoring element (1), which coupling-in face (1,2) is not parallel to the compression axis. The anchoring element (1) further comprises a thermoplastic material which in areas of the peripheral surface enlargement forms at least a part of the surface of the anchoring element, the method comprising the steps of: • providing a bore (21.1) in the object (21); • positioning the anchoring element (1) in the bore (21.1); • coupling the compressing force (4) and the mechanical vibrations (5) through the coupling-in face into the positioned anchoring element (1), whereby the anchoring element is compressed and due to the distance enlargement at least locally pressed against lateral walls of the bore and the thermoplastic material is at least partly liquefied where in contact with the lateral walls and pressed into structures of the object (21) to form, after re-solidification, a form-fit connection with the lateral walls.
Abstract:
Eine Vorrichtung und ein Verfahren zum torsionalen Ultraschallschweissen zum Verbinden von zwei Teilen (4,5) unter Verwendung einer Steuermittel (7) zum Einstellen von Verfahrensparametern für den Ultraschallschweiss-Vorgang, mit deren Hilfe eine Sonotrode (2) derart ansteuerbar ist, dass nach Beendigung des Ultraschallschweiss-Vorgangs ein erstes, wenigstens teilweise aus einer Kunststofffolie bestehendes Teil (4) zum Wegreissen lösbar mit einem zweiten Teil (5) verbunden ist.
Abstract:
According to an aspect of the invention, a method of anchoring a connector in a lightweight building element is provided. The connector comprises a sleeve element and a piston element with a shaft portion, wherein the shaft portion is guided by the sleeve element. The piston element and/or the sleeve element comprises a thermoplastic material at least at an interface portion between the head portion and the sleeve portion. The method comprises the steps of providing the connector, of providing a through hole in the first building layer of the lightweight building element, of inserting the connector through the through hole and until a distal portion rests against the second building layer. Therein, it may be the sleeve element or the piston element or both, the sleeve element and the piston element that rest(s) against the second building layer. The method then comprises the further step of coupling mechanical oscillations into the piston element while pressing the piston element towards the distal side, and thereby liquefying portions of the thermoplastic material at an interface portion between the sleeve element and the piston element while a periphery of the interface portion is adjacent the circumferential wall (or slightly distal with respect to it), and causing it to flow radially outward from the periphery and into structures of the first building layer and/or along an inner surface (i.e. surface facing towards the second building layer) of the first building layer. After resolidification, the thermoplastic material portions form a positive-fit connection with the first building layer.