Paper Contents
Abstract
Structural Health Monitoring (SHM) has become a vital approach for ensuring the safety and longevity of engineering structures. The Electro-Mechanical Impedance (EMI) technique, which employs piezoelectric sensors bonded to host materials, provides a reliable method for detecting fatigue-induced damage. In this study, a numerical fatigue model was developed in COMSOL Multiphysics to simulate cyclic loading on a copper host structure. The model incorporated a stress-based fatigue approach to assess damage evolution under progressive loading conditions. Piezoelectric transducer interaction with the host medium was simulated, and variations in conductance signatures were analyzed. Results indicated that fatigue damage in copper significantly influenced the EMI response, leading to resonance shifts and reduced admittance peaks. This confirms the feasibility of EMI as an efficient non-destructive evaluation technique for monitoring fatigue progression in copper-based structures.
Copyright
Copyright © 2025 Shivani Verma. This is an open access article distributed under the Creative Commons Attribution License.
