Physics-based Lifetime Model of Electrical Components
Name of applicant
Bo Yao
Title
Postdoctoral Fellow
Institution
University of Cambridge
Amount
DKK 1,692,643
Year
2025
Type of grant
Internationalisation Fellowships
What?
Lifetime prediction of components is an integral part of the design of power electronics. This project aims to reveal how non-equilibrium physical processes affect the degradation of electrical components and build a cross-scale physical model of the evolution of microscopic defects associated with macroscopic performance degradation.
Why?
Traditional empirical lifetime models for electrical components underestimate aging under dynamic stresses, as they ignore microscopic defect dynamics driving macro-scale changes. Bridging this gap addresses a core physics question: how micro-damage governs macro-parameter evolution, critical for accurate lifetime predictions for electrical components.
How?
Focusing on capacitors, one of the three basic electronic components, we will perform stress tests and local observation experiments from micro to meso to macro. The non-equilibrium physics in the microscopic is linked to the performance parameters in the macroscopic by tracking the evolution of defects and analyzing the internal degradation mechanisms through multiscale physical modeling.