Yuqin Gui

Publication Date

1998

Document Type

Dissertation/Thesis

First Advisor

Kim, Meung J.

Degree Name

M.S. (Master of Science)

Legacy Department

Department of Mechanical Engineering

LCSH

Laser beam cutting--Mathematics; Three-dimensional display systems; Finite element method

Abstract

The formation of a deep groove by evaporation on a solid is considered. Evaporation removal of material is achieved by focusing a high-power, highly concentrated Gaussian laser beam of constant wattage (CW laser) onto the surface of the solid. A numerical solution for the groove shape of the solid with an exponentially decaying source and proper boundary conditions is obtained using a three-dimensional finite-element method. The appropriate dimensionless parameters (N[sub k],B[sub i],N[sub e] and U ) are identified. The results for the groove depth and shape are presented for a variety of laser and solid parameters and compared with the results of the two-dimensional slab.

Comments

Includes bibliographical references (pages [68]-69)

Extent

x, 69 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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