ISE Graduate Seminar Series

Manufacturing at the Meso, Micro, and Nano Levels - Understanding the Effects of Processing and Surface Features

James B. Taylor
Associate Professor
Industrial & Systems Engineering Department

Date: Thursday, September 15th, 2005
Time: 1:00 - 1:50 pm
Location: Room 09-1149 (Kate Gleason Engineering Building)

Abstract:

All discreet manufacturing processes are used in some ways to generate surfaces that make up the geometry of the part being produced. It is well understood that those surfaces have some features that can affect the overall performance of the part. Bearings and other components are routinely manufactured with tight controls on their surfaces. In meso, mirco and nano applications, the manufactured surfaces tend to have an even greater effect on performance due to the fact that the features have a relatively larger size in comparison to the rest of the structure. This talk will explore the effect that surface roughness has on fluid flow in meso, micro and nano networks. Though macro systems have been studied for well over a century, the exact effect roughness has on fluid flow has not been completely understood, with a working estimate of the effects offered by a variety of authors over time. The concept of relative roughness will be introduced and the effects of constricted flow will be explored. Current work by Kandlikar, Carrano and Taylor has extended the traditional methods of assessing surface roughness effects up to 14% relative roughness by including the effect of constricted flow diameters and modifying the traditional Moody diagram to reflect new experimental data. The future of mico fluidics would suggest that trends for miniaturization will continue and that further udnerstanding and experimentation will be warranted.

Questions?
Contact Dr. Michael Kuhl at 475-2134 or mekeie@rit.edu