JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS
Online ISSN : 2189-9967
Print ISSN : 0915-1168
ISSN-L : 0915-1168
Volume 57 , Issue 11
Special Issue on Green Tribology (Part 1)
Showing 1-16 articles out of 16 articles from the selected issue
Announcement
Tribo Museum
Contents
Serial Messages to Tribologists
Special Issue on Green Tribology (Part 1)
Explanation
Explanation
Essay The Tribo-Soshi, Essays from Tribologists
Original Contribution
  • ―Effects of Running-In Conditions on Real Contact Area―
    Masao EGUCHI, Tetsuji MIKI, Tsuyoshi HIRAYANAGI, Tatsuro MIYOSHI
    2012 Volume 57 Issue 11 Pages 768-776
    Published: November 15, 2012
    Released: December 27, 2019
    JOURNALS FREE ACCESS
    Under non-lubricating conditions, the real contact area (Area 1) and its vicinity of micro-gap (Area 2) which influence the frictional characteristics of paper-based wet friction materials, were statistically measured. The effects of the number of running-in cycles (N) and the contact pressure on Area 1 and Area 2 were examined by measuring the reduction in thickness of the friction material and by conducting particle analysis considering the real contact points. The results are as follows: Area 1 increased with N and contact pressure, but hysteresis behavior appeared in the unloading process. However, no hysteresis was observed in the thickness reduction of the friction material. (2) As N increased, Area 1 increased but there was little increase in Areal 2. (3) The average real contact pressure obtained from nominal contact pressure and also the number of contact points (n) based on particle analysis decreased with N, owing to the increase in n. (4) Regardless of contact pressure and N, the relation between Area 1 and n was expressed as a line with a folding point where the slope changed.
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