ABSTRACTS, cont.

Uncertainty analysis of tool wear and surface roughness
MSEC2013-1245
A. Sequera, The University of Alabama, Tuscaloosa, AL, United States, Yuebin Guo, Ph.D., Univ. of Alabama,
Tuscaloosa, AL, United States
Tool wear development is an important parameter to control in order to obtain a specific surface integrity in
machining operations. Unfortunately, it is difficult to accurately predict the tool life since wear rates generally
exhibit a large scattering, and in consequence a scattering in the surface roughness is also present. This paper
presents an approach to evaluate uncertainty contributors for tool wear and surface roughness in end milling
of superalloy Inconel 718. Multiple regression analysis was applied to develop empirical models of tool wear
and surface roughness based on the experimental data. Principles of uncertainty in measurement were applied
and uncertainty contributors were identified. It was shown that cutting speed is the principal contributor to the
combined uncertainty of tool wear and surface roughness.
JUNE 10-14, 2013 // Madison, Wisconsin
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