repairing Fig. 3: Induction coil with an optimized wire geometry embedded in silicon Fig. 5: Exhibition setup on JEC Europe 2015 in Paris Fig. 4: Mobile repair station for generating the required heat and pressure cycle the metal sheet and generates an electric current, which in turn generates an induction current (eddy current) that heats the metal sheet. To heat the entire metal sheet homogeneously, several spiral coils with a few windings are arranged adjacently. During the setup, care must be taken to ensure that the current from neighbouring coils flows in the right direction. This strengthens the electromagnetic field. To enable the use of the induction coil on curved structures as well, the coil wires are attached to a carrier material and enveloped in silicone. 72 jec composites magazine / No97 May - June 2015 Mobile repair station The mobile repair station provides all the systems needed to repair FRP structures. In addition to the system technology for creating the alternating electromagnetic field, the repair station also includes a vacuum pump for applying the necessary pressure to the patch. A netbook was added to manage the systems and control the individual processes via a resistance thermometer and a flowmeter. n More information: www.DLR.dehttp://www.dlr.de http://www.netzsch.com