Data-driven Structural Health Monitoring involves leveraging measured vibration data to assess the integrity and safety of engineering structures. Instead of relying solely on physics-based models, this approach integrates signal processing, machine learning, and statistical methods to identify, localize, and classify structural damage. By combining domain knowledge with data-driven techniques, it enables robust monitoring of complex structures under real-world operating conditions, even in the presence of noise and uncertainty.
Modeling of Electrode Particles in Lithium-Ion Batteries focuses on capturing the complex interplay between electrochemical reactions, ion transport, and microstructural characteristics of electrode materials. By representing how lithium ions diffuse within electrode particles and interact with the active material, these models provide insights into charge–discharge behavior, capacity fade, and degradation mechanisms. Such modeling serves as a bridge between material-scale physics and cell-level performance, enabling improved battery design, optimization, and lifetime prediction.
This is a new neural network based training framework developed primarily my me with the guidance of my mentor (Anders) at CEA. In contrast to the Lagrangian or Hamiltonian neural networks—which operate in the full coordinate space, lack separate control over the architectures of kinetic and potential energy networks, typically require an ODE solver within the training loop, and have often been demonstrated on unforced/autonomous systems—our approach first learns latent coordinates sufficient to capture the dynamics using an autoencoder, allows independent design of the kinetic and potential energy networks, leverages force supervision to eliminate the need for an ODE solver during training, and has been validated on several forced nonlinear systems.
Aging-aware State of Health (SOH) and Remaining Useful Life (RUL) Estimation Algorithms are critical for reliable and safe operation of lithium-ion batteries in real-world applications. These algorithms account for the progressive aging mechanisms—such as capacity fade and internal resistance growth—when estimating the battery’s current health status and predicting its future performance. By integrating electrochemical models, data-driven methods, and adaptive filtering techniques, aging-aware estimation enhances the accuracy of battery management systems (BMS), enabling better energy utilization, safety assurance, and predictive maintenance.