Theses and Dissertations
Date of Award
5-1-2026
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Civil Engineering
First Advisor
Mohsen Amjadian
Second Advisor
Constantine M. Tarawneh
Third Advisor
Heinrich D. Foltz
Abstract
This study presents an Electromagnetic Energy Harvester designed to overcome the narrow bandwidth limitations of conventional vibration-based harvesters for low-frequency applications. The system integrates two flexurally coupled cantilever beams with a controlled mechanical impact mechanism to achieve broadband energy harvesting through frequency up-conversion. An analytical 2DOF lumped-parameter model and finite element analysis were developed to characterize the coupled electromechanical behavior and nonlinear impact dynamics, followed by experimental validation using a fabricated prototype. Results demonstrate that the harvester significantly enhances voltage output, achieving up to 3 V and 0.59 mW under optimal conditions. Additionally, the introduction of impact increases the effective bandwidth by approximately 2.4 Hz near the second resonant frequency. Furthermore, a vibration-amplified configuration introduces an additional degree of freedom by incorporating a compliant base, effectively transforming the system into a 3DOF model with closely spaced resonant modes. The device can sufficiently power wireless sensors, highlighting the system’s strong potential for structural health monitoring of railway infrastructures.
Recommended Citation
Monsury, M. (2026). Design, Modeling and Testing of a High-performance Electromagnetic Energy Harvester for Broadband Power Generation From Train-Induced Vibration of Railway Bridges [Master's thesis, The University of Texas Rio Grande Valley]. ScholarWorks @ UTRGV. https://scholarworks.utrgv.edu/etd/1961
Comments
Copyright 2026 Md. Ismai Monsury. All Rights Reserved. https://proquest.com/docview/3371456280