Degree Type

Dissertation

Date of Award

2020

Degree Name

Doctor of Philosophy

Department

Electrical and Computer Engineering

Major

Electrical Engineering(Electromagnetics, Microwave,and Nondestructive Evaluation)

First Advisor

Jiming Song

Abstract

The physical modeling and simulation of nondestructive evaluation (NDE) measurements has a major role in the advancement of NDE and structural health monitoring (SHM). In ultrasonic NDE (UNDE) simulations, evaluating the scattering of ultrasound by defects is a computationally-intensive process. Many UNDE system models treat the scattering process using exact analytical methods or high-frequency approximations such as the Kirchhoff approximation (KA) to make the simulation effort tractable. These methods naturally have a limited scope. This thesis aims to supplement the existing scattering models with fast and memory-efficient full-wave models that are based on the boundary element method (BEM).

DOI

https://doi.org/10.31274/etd-20200902-52

Copyright Owner

Praveen Gurrala

Language

en

File Format

application/pdf

File Size

290 pages

Share

COinS