Naslov
Experimental study of the effect of plectrum parameters on the performances of plucked piezoelectric energy harvesters

Autori
Marković, Ela ; Zelenika, Saša ; Gljušćić, Petar ; Perčić, Marko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Conference proceedings of the 22nd International Conference of the European Society for Precision Engineering and Nanotechnology / Leach, R. K. ; Akrofi-Ayesu, A. ; Nisbet, C. ; Phillips, D. - Cranfield : European Society for Precision Engineering and Nanotechnology (EUSPEN), 2022, 73-76

ISBN
978-1-9989991-1-8

Skup
22nd International Conference of the European Society for Precision Engineering and Nanotechnology

Mjesto i datum
Ženeva, Švicarska, 30.05.2022. - 03.06.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
piezoelectric energy harvesting ; frequency up-conversion ; autonomous sensor nodes ; DoE ; experimental assessment ; aircraft structural health monitoring

Sažetak
Autonomous sensor nodes, enabled by the integration of energy harvesting principles, create the preconditions for a significant simplification and mass reduction in aircraft structural health monitoring. A promising energy harvesting approach to collect and convert the energy from random aircraft vibrations during operation, is to use piezoelectric energy harvesters. Due to the narrow operating frequency bandwidth of the considered harvesters, a frequency up-conversion mechanism, based on plucking the free end of the piezoelectric devices by using rotating plectra, and letting the transducers oscillate at their eigenfrequencies, is introduced in order to enable their utilization while operating in the considered random excitation environment. An experimental investigation of fused deposition modelling 3D printed plectra is therefore carried on to better understand the effects of the respective design parameters, i.e., their size, stiffness and material types, on the resulting performances of the piezoelectric energy harvesters in terms of the obtainable specific power outputs. The voltages generated by the harvesters, as well as their maximal free end deflections, are thus measured for different plectrum materials, different plucking frequencies and different geometries of the plectra. Design-of-experiments (DoE) methods are employed in the setup of the experiments, whereas advanced numerical algorithms are used for the analysis of the hence obtained results. A comprehensive insight into the effects of plectrum properties on the responses of the piezoelectric energy harvesters is therefore provided, which represents another step towards the design of autonomous energy harvester powered sensor nodes to be used in aircraft structural health monitoring applications.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

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