Luca Dalessandro
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Bio-inspired rotor designs: enhancing thrust, energy efficiency, and noise reduction Open
Urban noise pollution is an increasingly pressing concern, driven by rapid infrastructural development and evolving environmental regulations. Among its most significant sources is the aeroacoustic emission from mechanical ventilation syst…
A Metamaterial Solution for Soundproofing on Board Ship Open
The design of innovative metamaterials with robust and reliable performances is attracting increasing interest in shipbuilding, due to the potential and versatility of these materials. In particular, soundproofing is becoming an even more …
A design strategy to match the band gap of periodic and aperiodic metamaterials Open
The focus of this paper is on elastic metamaterials characterised by the presence of wide sub-wavelength band gap. In most cases, such mechanical property is strictly connected to the periodic repetition of the unit cell. Nonetheless, the …
European Ph.D. School 2019 [Chapter News] Open
Presents information on various IES Society chapters.
The Flagship Event for Ph.D. Graduates in Europe [Chapter News] Open
Presents news of interest to IES society members.
Harmonic analysis and mitigation in distribution grids with high penetration of power inverters Open
Inverters of large heat pumps in an urban low voltage grid generate current harmonics and cause consequently significant variations of the respective voltage harmonics. The voltage level at each grid point is not only influenced by the ope…
View article: Low frequency 3D ultra-wide vibration attenuation via elastic metamaterial
Low frequency 3D ultra-wide vibration attenuation via elastic metamaterial Open
The design of innovative metamaterials with robust and reliable performances is attracting increasing interest in the scientific community because of their unique properties and for their unexplored potential. In particular, dynamical prop…
Performance assessment of the VSC using two model predictive control schemes Open
Finite control set model predictive control (FCS-MPC) methods in different power electronics application are gaining high attention due to their simplicity and fast dynamics. This paper introduces an experimental assessment of the two-leve…
Single-phase engineered metamaterials for wave filtering with optimal performances Open
The paper present the comparative study of different acoustic metamaterials, with unprecedented features in terms of sub-wavelength ultrawide bandgap, overstepping of passing bands, mechanical tuning of wave propagation. The investigation …
Mechanical low-frequency filter via modes separation in 3D periodic structures Open
This work presents a strategy to design three-dimensional elastic periodic structures endowed with complete bandgaps, the first of which is ultra-wide, where the top limits of the first two bandgaps are overstepped in terms of wave transmi…
Air-coupled PMUT at 100 kHz with PZT active layer and residual stresses: Multiphysics model and experimental validation Open
In this paper a complete Multiphysics modelling via the Finite Element Method (FEM) of an air-coupled Piezoelectric Micromachined Ultrasonic Transducer (PMUT) is described, with its experimental validation related to the mechanical and aco…
Multiphysics analyses of the effect of package on the performances of PMUT transducers Open
The paper deals with the multiphysics modeling of piezoelectric micromachined ultrasound transducers (PMUT), that can be used in several practical applications. The model accounts for the multiple couplings between the mechanical fields an…
Modeling and experimental verification of an ultra-wide bandgap in 3D phononic crystal Open
This paper reports a comprehensive modeling and experimental characterization of a three-dimensional phononic crystal composed of a single material, endowed with an ultra-wide complete bandgap. The phononic band structure shows a gap-mid g…
Application of optimally-shaped phononic crystals to reduce anchor losses of MEMS resonators Open
This work is focused on the application of Phononic Crystals to reduce anchor losses of MEMS contour mode resonators. Anchor losses dominates the losses in these type of released resonators at low frequency and at low temperature. The use …
BESO APPROACH TO TOPOLOGY OPTIMIZATION OF GAN PHONONIC CRYSTALS Open
The use of Phononic Crystals (PnC) in suspended structures and microstructures, such as plates and slabs, has gained a lot of attention in the past years for the wide range of feasible applications (acoustic waveguides, acoustic insulation…