Production Engineering

, Volume 1, Issue 3, pp 233–237 | Cite as

Development of an incremental rolling process for the production of defined riblet surface structures

  • Fritz Klocke
  • Björn FeldhausEmail author
  • Sebastian Mader
Production Process


Viscous drag reduction on fan, compressor and turbine blades may be achieved by employing a riblet surface structure. Such a structure assists in increasing efficiency and in reducing energy consumption in flow applications. In order to produce riblet surface structures industrially, a new and incremental rolling process is being developed and investigated. The process design is being determined by common airstream requirements as well as the forming mechanisms that are predominant during the rolling process. Based on this principle, the required shape of the structured rollers is being developed. Research is focused on the feasibility of manufacturing small riblet structures at a size of a few hundred microns. Experimental production of different riblet geometries made from Ti-6Al-4V (WL 3.7164) provides some initial insights with respect to feasibility, shape accuracy, surface quality, and micro structure.


Production process Riblets Rolling 



The research presented here was carried out with the support of the Volkswagen Foundation within the framework of the “RibletSkin” research project. The research of the fluid dynamics is carried out by the Institute of Aerodynamics (AIA) of the RWTH Aachen.


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Copyright information

© German Academic Society for Production Engineering (WGP) 2007

Authors and Affiliations

  • Fritz Klocke
    • 1
  • Björn Feldhaus
    • 1
    Email author
  • Sebastian Mader
    • 2
  1. 1.Werkzeugmaschinenlabor RWTH AachenAachenGermany
  2. 2.Zwilling J.A. Henckels AGSolingenGermany

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