Our Technologies
I. Sensor technologies
Embroidered strain sensor
These strain sensors, manufactured using textile technology, are incorporated into the fiber-reinforced plastic composite structure during component production. This creates a sensor that is firmly connected to the structure and reliably indicates even the smallest strains.
Further details can be found here: Stick sensor data sheet.
Structure-borne sound sensor
The structure-borne sound sensor, also called acoustic emission sensor, is a capacitive acceleration sensor that is fixed directly to the structure. The micromechanical transducer element has an inherent filter to minimize unwanted frequencies without having to rely on external electrical filters. The sensor is read out via a PCB.
Further details can be found here: Structure-borne sound data sheet.
Pseudoelastic shape memory alloys (SMA) as strain sensors
Compared to steel and aluminum, fiber composites and plastics are highly elastically stretchable. Sensors that are also stretchable are therefore required to measure strain on components made of these materials, as conventional strain gauges fail due to fatigue after a high number of cycles. Elastic SMA sensors that are easy to integrate into fiber composites and plastics are suitable for cyclic measurements and mobile applications. They have a high measurement sensitivity and a very long service life. For process and structural monitoring of components, maximum repeatable strains in the range of 10% and strains with a large number of cycles in the range of 2% are reliably measured.
For further technical details contact us » here.
Sensor patch: ies200
The ies200 (integrated embroidered sensor 200 [mm]) can measure the deformations that occur over the entire service life of the rotor blades. By being manufactured in a pre-laminated form, the measuring sheet, the embroidered strain sensor can be applied to the glass fiber material under laboratory conditions and connected to the matrix. This makes it suitable for use directly in the blade production and robustly encapsulated as a subsequent sensor patch.
The ies200 is made of high quality GL-certified glass fibre laminate to
to obtain mechanical properties that are as identical as possible to those of the rotor blade material to be monitored.
Further details can be found here: Datasheet ies200 .
II. Condition monitoring
Digital Condition-Monitoring-System CMS
The FiberCheck condition monitoring system for fiber-reinforced plastic composites enables non-destructive monitoring using material-integrated sensors. It is used for the early detection of problems in the composite matrix (e.g. delaminations) or fiber breaks.
Furthermore, our sensor values are used for load monitoring and to detect mass changes.
III. Damage detection
Damage mechanisms
Due to the complex structural mechanics and the diverse failure mechanisms of highly stressed FRP components, new challenges arise with regard to component monitoring and inspection (structural health monitoring).
With the FiberCheck sensors, conclusions can be drawn about microscopic damage and macroscopic changes and corresponding work steps can be simplified.