A5088224587- Magnetic Properties and Applications
- Non-Destructive Testing Techniques
- Microstructure and Mechanical Properties of Steels
- Innovative Energy Harvesting Technologies
- Electric Motor Design and Analysis
- Ferroelectric and Piezoelectric Materials
- Magnetic properties of thin films
- Acoustic Wave Resonator Technologies
- Advanced Sensor and Energy Harvesting Materials
- Induction Heating and Inverter Technology
- Ultrasonics and Acoustic Wave Propagation
- Piezoelectric Actuators and Control
- Fractional Differential Equations Solutions
- Energy Harvesting in Wireless Networks
- Magnetic Field Sensors Techniques
- Structural Health Monitoring Techniques
- Characterization and Applications of Magnetic Nanoparticles
- Advanced MEMS and NEMS Technologies
- Metallic Glasses and Amorphous Alloys
- Solidification and crystal growth phenomena
- Additive Manufacturing and 3D Printing Technologies
- Welding Techniques and Residual Stresses
- Multiferroics and related materials
- Electromagnetic Effects on Materials
- Advanced Surface Polishing Techniques
Université Claude Bernard Lyon 1
2013-2025
Tohoku University
2018-2025
Centre National de la Recherche Scientifique
2018-2025
Institut National des Sciences Appliquées de Lyon
2015-2024
Xerox (France)
2020-2023
Lyon College
2023
Ferro (United States)
2019-2022
Purdue University West Lafayette
2019
Université de Lyon
2015
École Centrale de Lyon
2004-2009
This paper presents an experimental piezoelectric energy harvester exhibiting strong mechanical nonlinear behavior. Vibration harvesters are usually resonant systems working at resonance. The resulting amplification gives output power multiplied by the quality factor Q when compared to non-resonant systems, provided that electromechanical coupling k2 is high as well Q. However, increasing value results in a narrowband harvester, and main drawback difficulty of matching given vibration...
Abstract This study presents the development of ultrasound (US) sensors for structural health monitoring (SHM) by directly printing onto components. Unlike traditional ultrasound-based SHM systems, this approach minimizes challenges related to sensor placement and environmental interference, providing a stable, durable, cost-effective solution long-term critical infrastructure. The core technology is piezoelectric composite made an OE 132-43/P189 mixture at 80 vol.% ferroelectric particles...
Vibration energy harvesters are usually resonant mechanical systems working at resonance. The subsequent amplification results in output powers multiplied by the quality factor when compared to non-resonant systems. main drawback is difficulty of matching a given vibration frequency range harvester's resonance frequency. Among several techniques, use nonlinear resonators was proposed studies for enlarging harvester power bandwidth. In addition, microelectromechanical become driven even...
Grain-oriented silicon steel (GO FeSi) laminations are vital components for efficient energy conversion in electromagnetic devices. While traditionally optimized power frequencies of 50/60 Hz, the pursuit higher frequency operation (f ≥ 200 Hz) promises enhanced density. This paper introduces a model estimating GO FeSi laminations’ magnetic behavior under these elevated operational frequencies. The proposed combines Maxwell diffusion equation and material law derived from fractional...
The introduction of accurate material modeling such as hysteresis phenomenon in numerical field calculation leads to problems induced by the nonlinear properties initial system. We focus on solution magnetic diffusion equation, which contains problems. This paper presents a new formulation equation including dynamic hysteresis. resulting linear system solve. A implementation problem and an experimental validation are also presented.
Accurate and simple magnetic material law is necessary to correctly model the complete electromagnetic systems. In this paper, a new formulation based on scalar quasi-static hysteresis Jiles-Atherton extended dynamic behavior using fractional derivative contribution proposed. The solved convolution which highly reduces numerical issues. order of derivation provides degree freedom allows obtaining correct simulation results very large frequency bandwidth. By such formulation, high-memory...
We propose an approach to solve the coupled problem of magnetic field penetration into soft ferromagnets and a frequency dependent hysteresis. The diffusion is related macroscopic eddy currents. hysteresis model microscopic currents derived from domain wall movements, responsible for dependence loops. In this paper, based on lumped fractional derivative operators, we demonstrate that it possible replace diffusion/dynamic in simplest formulation using operators. Such can be solved easily....
This study focusses on a low-frequency induction heating (LFIH) effect in thermoplastic polymer (acrylonitrile butadiene styrene, ABS) filled with iron oxide magnetic particles. The LFIH such ferromagnetic composites appears as soon the sample is exposed to an alternating excitation field and mainly due so-called "microscopic" eddy currents linked motions of domain wall. To generate AC significant amplitude under range few thousand Hz, specific test bench has been designed using rotating...
The properties of ferroelectric ceramics strongly depend on the electromechanical loading and their measurement conditions. In this paper, a nonlinear phenomenological one-dimensional model based dry friction concept is presented to describe hysteretic polarization behaviour. Dielectric permittivities versus dc electric field (or capacitance C voltage V) loops are determined for characterization material. ε33 coefficient used ceramic because it correlated with quality. purpose paper develop...
Polarization phenomena in ferroelectric materials are frequency-dependent, and the present article describes use of a fractional derivative for understanding these as well modeling them functions frequency electric field amplitude. The focus was first directed toward definition validation proposed model through comparisons between simulations measurements high electrical excitation amplitudes on large bandwidth (major hysteresis loops, measured over 4 decades). Subsequently, same were made...
We propose an original approach to solve the coupled problem of alternative magnetic field penetration inside a toroidal soft ferromagnetic sample and frequency dependent hysteresis. Local repartition losses depends on instantaneous material properties excitation waveform. A correct solution model, with respect this repartition, implies higher resolution in two dimensions diffusion equation including local dynamic hysteresis consideration. The resulting model gives precious information but...
Accurate and simple magnetic material behavior law is necessary to correctly model complete electromagnetic systems. In this paper, a new formulation based on the scalar quasi-static hysteresis Preisach extended dynamic using fractional derivation contribution proposed. The solved convolution which highly reduces numerical issues. order of provides degree freedom allows obtain simulation results very large frequency bandwidth. By such formulation, space discretization techniques (finite...