Masters Theses

Keywords and Phrases

Additive Manufacturing; Aerospace; Defects; Laser Metal Deposition


"Parts or products machined from high performance metals are very expensive, partly due to the processing complexities during manufacturing. Therefore, many high performance metal parts users, such as the aerospace industry, mold/die casting industry, heavy machinery consumers etc., extend the service of these damaged parts by employing repair or remanufacturing technology. The research objective is to use laser deposition and machining processes to repair titanium parts.

This thesis discusses a new way of approach for developing a repair process for Ti-6Al-4V for the aerospace industry using Laser Metal Deposition (LMD). The repairs were conducted in a multi-axis hybrid manufacturing systems in which the laser deposition and the machining processes are integrated. The study broadly included preparing the defects, laser deposition, machining, sample preparations and mechanical tests. Comparative study of mechanical properties (UTS, YS, percentage elongation) of the repaired samples to the ideal conditions was undertaken. The research throws up interesting facts where the data from the test sample shows enhancement of properties of the repaired part."--Abstract, page iv.


Liou, Frank W.

Committee Member(s)

Midha, A. (Ashok)
Cudney, Elizabeth A.


Materials Science and Engineering

Degree Name

M.S. in Manufacturing Engineering


GKN (Firm)
National Science Foundation (U.S.)
Missouri University of Science and Technology. Intelligent Systems Center
Missouri University of Science and Technology. Materials Research Center

Research Center/Lab(s)

Intelligent Systems Center


Missouri University of Science and Technology

Publication Date

Summer 2014


x, 59 pages

Note about bibliography

Includes bibliographical references (pages 47-49).


© 2014 Nanda Kumar Dey, All rights reserved.

Document Type

Thesis - Open Access

File Type




Subject Headings

Pulsed laser deposition
Manufacturing processes
Powder metallurgy
Titanium alloys

Thesis Number

T 10508

Electronic OCLC #


Included in

Manufacturing Commons