Title: Perceived and real roughness variations across machined surfaces

Authors: Ramiz F. Babus 'Haq, Douglas Probert, Brian Snaith, Paul W. O'Callaghan, Hakim E. George

Addresses: Department of Applied Energy, School of Mechanical Engineering, Cranfield Institute of Technology, Bedford MK43 OAL, UK. ' Department of Applied Energy, School of Mechanical Engineering, Cranfield Institute of Technology, Bedford MK43 OAL, UK. ' Department of Applied Energy, School of Mechanical Engineering, Cranfield Institute of Technology, Bedford MK43 OAL, UK. ' Department of Applied Energy, School of Mechanical Engineering, Cranfield Institute of Technology, Bedford MK43 OAL, UK. ' Department of Applied Energy, School of Mechanical Engineering, Cranfield Institute of Technology, Bedford MK43 OAL, UK

Abstract: To measure and specify surface roughnesses, due consideration must be given to the observed parameter variations which can result (i) because of the measurement process itself, and (ii) genuinely from the inherent non-uniformity of surface texture due to the manufacturing process employed. In the current investigation, recommendations have evolved concerning how to reduce the apparent roughness variations, which can occur when using a Talysurf 4 stylus-based profile-tracing instrument. In addition, true local parameter variations, for a range of finishing processes, have been measured in order to indicate typical acceptable tolerances for roughness parameters.

Keywords: surface machining; non-uniform surfaces; surface texture; surface topography; surface roughness; roughness measurement; roughness variations.

DOI: 10.1504/IJMPT.1990.036607

International Journal of Materials and Product Technology, 1990 Vol.5 No.1, pp.12 - 24

Published online: 05 Nov 2010 *

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