Experimental Mechanics

, Volume 33, Issue 3, pp 242–248 | Cite as

Range-pair-counting fatigue gage

  • Y. Nagase
  • Y. Sawaki
  • H. Yoshida


In this paper, the surface roughening phenomenon of an aluminum foil during fatigue process is utilized for monitoring of a variable amplitude stress. It is found that constant mean stress does not affect surface roughness. When the mean stress varies, however, it causes surface roughening. In such a case, the equivalent stress defined by (Σσ i α N i N i )1/α dominates surface roughness of an aluminum foil, where σ i andN i are stress amplitude and the number of cycles counted by the rangepair method, respectively, and α is a gage factor which is peculiar to the foil used. It is concluded that the aluminum foil can be used as the range-pair counting fatigue gage with high accuracy.


Aluminum Fatigue Surface Roughness Mechanical Engineer Fluid Dynamics 
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Copyright information

© Society for Experimental Mechanics, Inc. 1993

Authors and Affiliations

  • Y. Nagase
    • 1
  • Y. Sawaki
    • 1
  • H. Yoshida
    • 1
  1. 1.Shizuoka UniversityHamamatsuJapan

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