Date of Award

2020

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical Engineering

First Advisor

Dryver Huston

Abstract

Location and identification of subterranean infrastructure is crucial for managing

and maintaining urban infrastructure and utility, and locating subsurface hazards.

Low-frequency oscillating magnetic fields suffer less attenuation due to propagating

through media than ground penetrating radar. Here, electronically-geared, rotating neodymium magnets project oscillating magnetic fields which are manipulated

to provide object identification from rapid analysis of dynamic magnetometer data.

Ferromagnetic materials interact directly with the rotating magnetic field. Eddy currents, which induce a counter-propagating magnetic field, are generated in conductive,

non-ferromagnetic materials. Two applications are highlighted by preliminary experiments: discrimination between copper, aluminum and steel pipes, and improved

detection of buried explosive devices.

Language

en

Number of Pages

114 p.

Available for download on Saturday, July 30, 2022

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