Theses and Dissertations

Date of Award


Document Type


Degree Name

Master of Science (MS)


Manufacturing Engineering

First Advisor

Dr. Jianzhi Li

Second Advisor

Dr. Douglas Timmer

Third Advisor

Dr. Ben Xu


An automatic powder deposition and leveling mechanism was designed and constructed to assist in surface roughness experiments for titanium-boron samples. Previously developed energy models and x-ray diffraction analysis was used to confirm the creation of titanium diboride samples. To study TiB2 at different energy values, a 52 (2 factors, 5 levels) factorial design was used and carried out under an argon atmosphere, through the AM250 laser melting system. Two experimental runs were carried out and a total of 50 samples were assigned a surface roughness measurement through the Dektak XT profilometer. Graphically and with statistical analysis, the data was determined to be normally distributed. A statistical analysis software, Minitab, generated a regression for the data and confirmed that laser power and scanning speed were significant in lowering surface roughness.


Copyright 2019 Julian Gonzalez. All Rights Reserved.

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