Shareholdings of Fraunhofer
Fraunhofer Venture
SURAGUS GmbH
The Company
SURAGUS GmbH, founded in 2010, develops customized eddy current-based testing technology for inline and offline quality assurance in different industries. This main area of application of this process is in non-destructive testing of structured and unstructured functional layers (e. g. TCO layers), of fiber and composite materials, as well as of classic metallic materials.
Technology and Products
The eddy current method utilizes local conductivity variations for the characterization of quality characteristics such as thickness, sheet resistance, material homogeneity or other physical changes in the test material. The powerful eddy current electronics implemented allows for up to 50,000 measurements per second and offers a wide frequency range from 10 kHz to 100 MHz enabling the application of different penetration depths and sensitivities depending on the testing task. For all products, SURAGUS offers a user-friendly software fitted to each individual testing task for fast real-time evaluation. The products of the EddyCus® range provide for both offline and inline use. The EddyCus®MPECS (Multi Parameter Eddy Current Scanner), developed by Fraunhofer IZFP in Dresden, is designed to create high-resolution conductivity images. It may be used for a wide range of applications. For the detection of carbon fiber materials, specially adapted sensors, software modules and measuring recipes are implemented.
For the quality assurance of carbon fiber materials, high-resolution eddy currents are induced and characterized in a contact-free procedure. The conductivity images created in a scanning process or through the implementation of arrays show individual fiber bundles in the different hidden layers. Thus, it is possible to detect important errors or to precisely prove the quality.
Besides the testing of fiber composite materials, the inline quality control of functional thin layers in the photovoltaic, display, and architectural glass industry is the main application of the SURAGUS GmbH EddyCus® series.
EddyCus®MPECS
 | • Contact-free, real-time representation of results
• Frequency from 10 kHz to 100 MHz • Creation of conductivity images (C scans) with up to 4 frequencies by means of eddy current sensors • Representation of structured conductive thin layers • Quality assurance of carbon fiber materials, also in hidden layers • Quality assurance of solar cells: e. g. delamination, finger failures, impurities, cracks, inhomogeneities • Representation of sheet resistance • Representation of layer thickness • Topography • Automated analysis with color coding and comprehensive filtering options • Data archiving |
EddyCus®TF lab
 | • Contact-free and real-time
• Layer thickness measuring of low and high-conductive layers on non-conductive substrates at nanometer resolution (e. g. layers on wafers, glass and plastic foils) • Sheet resistance measuring of conductive layers on non-conductive substrates (e. g. layers on wafers, glass and plastic foils) • Sheet resistance and/or layer thickness measurement in multi-layer systems by means of differential measurements • Wall thickness of low and high-conductive substrates • Suitable for most various substrate thicknesses |
EddyCus®TF inline
EddyCus®Pro 100 MHz
 | • Detection of minor changes in conductivity and thickness
• High-resolution thin-film thickness measurement of low and high-conductive layers • Roughness characterization of conductive materials with constant conductivity (RA > 1 µm in material approx. 30 MS/m) • Detection of surface defects, delamination, geometry variations • Layer thickness determination of thick and thin conductive layers on non-conductive or low-conductive substrates with very high precision, spot size of approx. 5-8 mm • Generation of near-surface depth profiles • Layer thickness determination of thick conductive layers (> 10 µm) on conductive substrates or from different layer stacks • Characterization of material properties such as hardness or micro structure in thin near-surface layers of high and low-conductive materials |
EddyCus® Sensor Series
SURAGUS offers numerous sensors optimized for different testing tasks, levels of accuracy, and environmental conditions. For innovative testing tasks, the performance of the different sensors will be tested in feasibility studies and/or simulation-based sensor concepts will be developed.
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