A4 Conference proceedings

Fabrication of Surfaces with Reduced Friction Using Nanosecond Laser


Open Access publication

Publication Details
Authors: Kaakkunen Jarno, Tiainen Jonna, Jaatinen-Värri Ahti, Grönman Aki, Lohtander Mika
Publisher: Elsevier: Creative Commons Attribution Non-Commercial No-Derivatives License
Publication year: 2018
Language: English
Related Journal or Series Information: Procedia Manufacturing
Title of parent publication: 28th International Conference on Flexible Automation and Intelligent Manufacturing (FAIM2018)
Start page: 14
End page: 21
Number of pages: 8
ISSN: 2351-9789
eISSN: 2351-9789
JUFO-Level of this publication: 1
Open Access: Open Access publication

Abstract

In this paper a short i.e. nanosecond pulse laser ablation is utilized
to fabricate trapezoidal shaped microstructures i.e. riblets that are
known to reduce friction. They can be applied for example in
turbomachinery applications to make system more economical by reducing
the wall shear stress on flow surfaces. Previously, these structures
have been manufactured using different methods like grinding and
ultrashort pulse lasers. The methods used before have their
disadvantages and therefore they cannot be utilized in all applications.
By using the nanosecond pulse laser instead of the shorter pulses, it
is possible to manufacture riblets with a high fabrication speed and
economically. Although a quality of the nanosecond pulse laser
manufactured riblets is not as good as ones fabricated with the
ultrashort pulse lasers, they are still able to reduce friction in the
turbomachinery application.


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Last updated on 2019-13-03 at 12:00