Masters Theses
Abstract
"This work is concerned with numerical modeling of striation phenomena in continuous wave CO2 laser reactive gas cutting of steel. The mechanism of heating and melting by a scanning Gaussian laser beam is analyzed. It is shown that the sequence of ignition, burning and extinction causes the striation pattern. The mathematical model is based on heat conduction and oxygen mass transfer. Irregular geometry of the striation and the moving liquid-solid interface is handled by a boundary-fitted-coordinates method. The influence of laser parameters on striation pitch and frequency is studied. It is found that beam spot size and laser scan speed are controlling factors in determining the striation pitch and frequency. The calculated striation geometry and frequency compares qualitatively well with the experimental results"--Abstract, page iv.
Advisor(s)
Hai-Lung Tsai
Committee Member(s)
K. Chandrashekhara
Vy Khoi Le
Department(s)
Mechanical and Aerospace Engineering
Degree Name
M.S. in Mechanical Engineering
Publisher
University of Missouri--Rolla
Publication Date
Fall 2002
Pagination
ix, 45 pages
Note about bibliography
Includes bibliographical references (pages 27-28)
Rights
© 2002 Arindom Joardar, All rights reserved.
Document Type
Thesis - Restricted Access
File Type
text
Language
English
Subject Headings
Steel
Metal-cutting
Thesis Number
T 8194
Print OCLC #
53120640
Recommended Citation
Joardar, Arindom, "Modeling the striation phenomena in oxygen-assisted laser cutting of steels" (2002). Masters Theses. 2286.
https://scholarsmine.mst.edu/masters_theses/2286
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