The Acoustic Emission Sensor (AES) is a capacitive micromachined acceleration sensor that is fixed to the structure. The micromechanical transducer element features an an inherent filtering technique to minimize unwanted frequencies, without relying on the use of external electrical filters. The sensor is read out through a printed circuit board.
For more details please check: Technical data sheet - AES
These textile technology based sensors are incorporated into the fiber reinforced composite durings its fabrication. This integrated sensor allows us to reliably detect even the smallest strains.
Conclusions about microscopic and macroscopic damages can be drawn from these two sensors.
Among others, the sensor recognizes:
For further technical details check here: Technical data sheet - IES
The specific characteristics of Acoustic Emission Sensors permits a selective detection of damages within fiber-plastic composites through recording and processing of impulses. The intensity of impulses, corresponding to damage levels, is permanently verified through the status monitoring unit which controls and evaluates damage events. Every impulse can so can be a reliable indicator for emerging damages with a stong damage represented by an accumulation of impulses.
Structural changes, recorded by the Stitched Strain Sensor, are directly transformed into electric signals. Those are permanently verified by the status monitoring unit with a focus on unanticipated deviations. Through continuous monitoring of strains, the specific natural frequencies and the whole frequency spectrum early detection and evaluation of damages events becomes possible.
There is a wide data output available, thanks to an graphic user display, a radio transmission in 2,4GHz-ISM-Band, wireless network or through a USB-port attached to the system.