Vibration energy harvesting (VEH) from otherwise dissipated kinetic energy in the environment has attracted intense research effort recently, as a sustainable way to reduce the use (and disposal) of batteries or the need of electric wires. High-voltage overhead lines are susceptible to wind-induced oscillations and, in the case of contact lines, vibrations from passing vehicles (e.g. trains). Wind can generate oscillations in suspended cables due to flutter, with centimeters of amplitudes and a frequency range of 3-150 Hz. Flutter can cause damaging due to fatigue and failure of conductor strands.Traditionally, the so-called Stockbridge damper is used to dissipate the energy of wind-induced oscillations in the main cable to an acceptable level. The damper is typically shaped as a dumbbell device with two masses at the extremes of a short flexible rod, clamped to the main cable.This project aims at converting the currently unused vibration energy into usable low-power electrical energy to supply local sensors for structural health monitoring of the power line and structure. This requires a deep investigation of the system dynamics and its interactions with the damping device when subject to oscillations. A key objective is to design a VEH device that can be embedded within the damper itself. This will impact positively on maintenance services and costs, allowing for targeted interventions based on sensor data. It will also underpin reliability and sustainable mobility.

Good background in mechanical engineering, specifically dynamics and vibrations, is required. Programming skills (MATLAB) are recommended. Candidates with good knowledge in nonlinear dynamics, electronics, measurements, and data analysis are encouraged. Working enthusiasm, creativity and attitude to problem solving are welcome.

The research activity will be carried out at the Dept. of Mechanical, Energy and Management Eng. of the University of Calabria in collaboration with the Dept. of Mechanical and Aerospace Eng. of the Polytechnic of Turin (prof. S. Marchesiello). The overall research group consists of a Full professor, an Associate professor, a Post-doc Researcher, a PHD student, and several Master students. The team has recognized expertise in vibration energy harvesting, nonlinear dynamics, mechatronics, with both theoretical and experimental skills. The candidate will spend a minimum of 6 months at Bertolotti S.p.A., taking advantage of the company know-how in the prototyping of overhead dampers.