Surface texturing has become a valuable technique for reducing friction and wear in contacting parts; laser surface texturing is one such method used to create micro-dimples on the interface surface. This work investigates the surface material property variation caused by laser surface texturing. The hardness and modulus of elasticity of a steel laser surface texture sample were evaluated near the dimples and away from the dimpled zone through nano-indentation. Resulting data shows that no significant difference exists between the material properties from the two positions. An alternate technique for surface texture generation was also explored, involving the use of micro-punches to create surface features in a metal sample. Computational simulations were performed using a second material underneath a thin copper sheet. The second material was present to serve as a support and to allow extensive deformation of the top material. The choice of the support material and ratio of material thicknesses was optimized to minimize pile up. Trials were conducted for three base supporting materials: PTFE, PMMA, and aluminum. Results show that PMMA performed better than the other materials. Positive deflection was minimized when the PMMA thickness was at least fifteen times that of the copper sheet. Physical experiments were completed with a thin copper sheet to verify the results. An array of micro-indentations was also created in a bulk steel sample. In order to assess the effect of dimpling via micro-forming, nano-indentation was performed near and far from the deformed material of the dimples. Similar to the laser textured sample, no significant differences were found between the two locations.
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ASME 2007 International Manufacturing Science and Engineering Conference
October 15–18, 2007
Atlanta, Georgia, USA
Conference Sponsors:
- Manufacturing Division
ISBN:
0-7918-4290-8
PROCEEDINGS PAPER
Effect of Micro-Manufacturing Processes on Surface Behavior Available to Purchase
Tiffany Davis,
Tiffany Davis
Northwestern University, Evanston, IL
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Q. Jane Wang,
Q. Jane Wang
Northwestern University, Evanston, IL
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Richard Lederich
Richard Lederich
The Boeing Company, St. Louis, MO
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Tiffany Davis
Northwestern University, Evanston, IL
Jian Cao
Northwestern University, Evanston, IL
Wei Chen
Northwestern University, Evanston, IL
Q. Jane Wang
Northwestern University, Evanston, IL
Cedric Xia
Ford Motor Company, Dearborn, MI
Raj Talwar
The Boeing Company, St. Louis, MO
Richard Lederich
The Boeing Company, St. Louis, MO
Paper No:
MSEC2007-31113, pp. 779-784; 6 pages
Published Online:
March 24, 2009
Citation
Davis, T, Cao, J, Chen, W, Wang, QJ, Xia, C, Talwar, R, & Lederich, R. "Effect of Micro-Manufacturing Processes on Surface Behavior." Proceedings of the ASME 2007 International Manufacturing Science and Engineering Conference. ASME 2007 International Manufacturing Science and Engineering Conference. Atlanta, Georgia, USA. October 15–18, 2007. pp. 779-784. ASME. https://doi.org/10.1115/MSEC2007-31113
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