Research Papers

Quantitative Analysis of Holes Produced in Laser Micromachining: A New Quality Index

[+] Author and Article Information
Benjamin Campbell, Murat Tiryakioğlu

Department of Engineering, Robert Morris University, Moon Township, PA 15108

J. Manuf. Sci. Eng 131(3), 031011 (May 19, 2009) (7 pages) doi:10.1115/1.3123341 History: Received September 26, 2008; Revised March 12, 2009; Published May 19, 2009

Prior methods of assessing the quality of laser machined features are reviewed. The common features that contribute to a quality analysis for laser-drilled holes are described and the best methods to measure them are presented. A new quality index based on the Taguchi loss function is introduced. The use of the new quality index in laser micromachining applications is demonstrated.

Copyright © 2009 by American Society of Mechanical Engineers
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Figure 4

Example of cross sectioned holes (19).

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Figure 5

Effect of α on q

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Figure 6

The change on Aq with α

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Figure 7

Sample set of laser-drilled holes for quality analysis demonstration. The scale shown is accurate for all ten holes.

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Figure 1

Diagram of suggested factors to study to determine hole quality

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Figure 2

Examples of holes showing different levels of melt rim and debris with hole (a) being the worst quality to hole (d) as the best (19) (the scale for the image is different but each hole is approximately 0.05 mm in diameter)

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Figure 3

Example of interferometer scan of laser-drilled holes



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