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Analysis of Surface Topography Changes in Steel Sheet Strips During Bending Under Tension Friction Test by M. Jonasson; A. Wihlborg; L. Gunnarsson is a Engineering article available to read on EtoBox.

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In order to investigate the frictional behaviour and the change in surface roughness of different sheet topographies, a bending under tension friction test, BUT, was used. This test exposes the material to bulkplastic deformation under conditions similar to those present in the drawing radius of a real tool. Each steel sheet material has been tested under different lubrication conditions. To measure the sheet surface topography a 3D stylus technique was used. For each steel strip the original surface, the area in contact with the tool and the resulting surface topography were measured. When comparing "standard" 3D surface roughness data for original and final surfaces, no correlation with friction data was obtained. However, with a special evaluation technique good correlation with oil retention volume and frictional behaviour was found for the surface in contact with the tool. By using measurements from the contact area, filtering the measured surface in two steps, firstly with a 5th degree polynom to get rid of the circular form and secondly with a ball filter to get rid of the waviness located in the topmost layer in the surface and then plotting the bearing area curve for the f

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Author

M. Jonasson; A. Wihlborg; L. Gunnarsson

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0890-6955)

Published

1998

Language

EN

Field

Engineering (Physical Sciences)