Paper Title:
Prediction of Slip Displacement in Nuclear Fuel Fretting Wear
  Abstract

Slipping characteristic on the contacts between the tubes and the supports is investigated to study the fretting wear of a vibratory tube. Tests were carried out to simulate the vibration of the fuel rods supported by the springs and dimples. A tube was forced to vibrate with 30Hz. The supporting condition was varied artificially: positive contact force or gap existence. During the tube vibration, amplitudes were measured continuously in the vicinity of the supports. Simple equations were derived to evaluate the slip displacement on the contacts. As a result, it was found that the supporting condition affected the vibration characteristic near the contacts. In the positive contact condition, the phase difference of the vibration signals at both sides of the contact was 180 degrees. It is altered in the gap condition and the higher frequency components than 30Hz appeared. The severer wear in the case of the gap existence is discussed with the evaluated slip distance per cycle.

  Info
Periodical
Key Engineering Materials (Volumes 297-300)
Edited by
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages
1365-1370
DOI
10.4028/www.scientific.net/KEM.297-300.1365
Citation
H. K. Kim, J. S. Song, Y. H. Lee, Y. H. Jung, J. H. Kim, "Prediction of Slip Displacement in Nuclear Fuel Fretting Wear", Key Engineering Materials, Vols. 297-300, pp. 1365-1370, 2005
Online since
November 2005
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Price
$32.00
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