Masters Theses


"This thesis focuses on the design and development of a microwire feeder for laser applications. The use of wire-feeders in laser welding and electrical discharge machining applications has been prominent which can handle wire of 0.25 mm and it can go up to 10.0 mm in other applications. Development of microwire handling devices is complicated and difficult due to its low buckling strength; the need for high accuracy for its use; and the harsh environment it is exposed to, in laser applications. This paper presents a systematic methodology for the design and development of a high-precision microwire handling device. This was done by dividing the microwire feeder into four basic sub-mechanisms: (1) feeding mechanism (2) transfer mechanism (3) precision guidance mechanism (4) adjustment mechanism and then integrating them to account for compactness, flexibility and precision. This microwire feeder is capable of handling wires as low as 0.05 mm in diameter. The device was experimentally tested for initial design failures, high precision, and repeatability. A case study on laser deposition is presented; where; a 316 stainless steel microwire of 0.125 mm diameter is fed into a melt pool of 0.2 mm. The wire feed and the traverse speed of the table is varied to achieve a uniformly distributed clad. The effect of wire feed and traverse speed is studied and a deposition process window is developed for future experimentation. Thus, the effectiveness of the microwire feeder in terms of accuracy and precision of delivering micro-diameter wires to very small melt pool sizes without damaging the wire is experimentally verified"--Abstract, page iv.


Liou, Frank W.

Committee Member(s)

Du, Xiaoping
Newkirk, Joseph William


Mechanical and Aerospace Engineering

Degree Name

M.S. in Manufacturing Engineering


National Science Foundation (U.S.)
Product Innovation and Engineering, LLC


Missouri University of Science and Technology

Publication Date

Summer 2010

Journal article titles appearing in thesis/dissertation

  • Research and development of microwire handling devices
  • Microwire feeder for laser applications


x, 71 pages


© 2010 Amogh Jeevan Shenoy, All rights reserved.

Document Type

Thesis - Open Access

File Type




Library of Congress Subject Headings

Design -- Methodology
Laser welding
Welding -- Equipment and supplies -- Design and construction

Thesis Number

T 9686

Print OCLC #


Electronic OCLC #


Included in

Manufacturing Commons