De-icing is a known problem in aeronautics, but also more recently in the field of wind power.
The objectives of reducing the consumption of airplanes require de-icing technologies that consume less energy than at present, in particular to replace thermal de-icing methods which have a very high energy consumption.
The setting in vibration of a structure at the resonance of one of its modes allows defrosting for a low energy cost, and this can be achieved by piezoelectric actuators for a reduced weight and size.
These advantages are found on wind turbines, since reducing the consumption of the de-icing system and its on-board weight are essential objectives.
In addition to these advantages for defrosting, there is the possibility of detecting the presence of ice and measuring its thickness with the same piezoelectric transducer.
Two methods for detecting and measuring piezoelectric ice can be used, namely pulse-echo measurement and measurement of the resonant frequency of the structure to which the transducer is fixed.
Piezoelectric technology therefore provides a solution combining defrost, detection and measurement of frost in a single system, in a compact and lightweight manner and with low energy consumption.