A method for locating a material having thermoplastic properties in pores of bone tissue includes providing a pin having the material having thermoplastic properties and a core, wherein the material having thermoplastic properties is arranged on the circumferential surface of the core constituting an outer region of the pin. An opening is provided in the bone tissue, and the pin is positioned at least partly in the opening. The outer region of the pin is then impinged with mechanical vibration energy for a time sufficient for liquefying at least part of the material having thermoplastic properties, and, in a liquefied state, pressing it into the pores of the bone tissue surrounding the opening. The vibration energy is stopped for a time sufficient for re-solidification of the liquefied material, and then the core is removed.

A method is provided for joining a plurality of workpiece parts, in particular body parts, in which: a) the workpiece parts are inserted into a joining tool, b) the workpiece parts in the joining tool are monitored for damages, c) the workpiece parts are joined by the joining tool, and d) the joined workpiece is monitored for damages in the joining tool.

A method of joining multiple components is disclosed. The method includes arranging a first component having a first surface, an opposing second surface, and a feature, in contact with a second component having a first surface, an opposing second surface, and defining an aperture. When so arranged, the first surface of the first component is adjacent to the second surface of the second component. The method also includes positioning a fastener on the first surface of the second component and in contact with the feature of the first component, such that at least a portion of the fastener overlaps the aperture on the first surface of the second component. The method additionally includes abutting and fusing the fastener to the feature of the first component to thereby affix the first component to the second component.

The invention relates to a method for producing plastics containers (15) from thermoplastics with inserts (13) which, by exploiting the heat of plasticization, are connected during shaping of the plastics container (15) by a material bond and/or interlocking connection to the container wall (140), wherein the method provides the use of at least one opening (26) on the insert (13), which opening forms a melt duct or melt inlet and/or melt passage for plasticized or plastic material of the container wall (140), wherein the method is distinguished in that the opening (26) is monitored as a reference opening (26) by optical and/or sensory means during the production of the connection, wherein the degree of penetration of the opening (26) with thermoplastic from the container wall (140) is used as a measure of the quality of the connection.