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- W2068777778 abstract "A comparison has been made between surface features which may be deduced from stylus records of surface profiles and the corresponding features indicated by contact area measurements using the same surfaces. Calculation of the average slope of the grooves on the surfaces of various materials unidirectionally abraded with emery cloth shows good agreement between the two experimental methods in many cases, but in some, for example with polytetrafluorethylene (PTFE), there is marked disagreement. For PTFE the slope angles obtained from contact areas are greater by a factor of two than those obtained from profile traces. Microscopic examination of the surfaces suggests that the contact area results are more nearly correct. Reasons for this and for the other discrepancies obtained when comparing the two techniques are examined. It is thought that, sometimes, the stylus trace produces a distorted shape of the groove profile. There is also the possibility that secondary or microroughness can sometimes reduce contact area (e.g. with aluminium or Perspex) but may not produce any measurable effect on the stylus trace due to the smallness of the asperities involved. The best agreement, in general, between the two techniques was obtained by assuming the grooves to be of V-shaped section with rounded peaks." @default.
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- W2068777778 date "1970-11-01" @default.
- W2068777778 modified "2023-09-27" @default.
- W2068777778 title "Comparative studies of surfaces by means of contact area measurements and stylus profile traces" @default.
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- W2068777778 doi "https://doi.org/10.1016/0043-1648(70)90098-0" @default.
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