Title page for ETD etd-07082010-020107

Type of Document Dissertation
Author Hite, Gregory Charles
URN etd-07082010-020107
Title The vibration of instrument ball bearings in a controlled environment and the effect of the resulting fretting corrosion on bearing torque.
Degree PhD
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Mabie, Hamilton H. Committee Chair
Eiss, Norman S. Jr. Committee Member
Hurst, Charles J. Committee Member
Jones, J. B. Committee Member
Ling, Chih B. Committee Member
Myers, Raymond H. Committee Member
Smith, Charles W. Committee Member
  • fretting corrosion
Date of Defense 1970-08-05
Availability restricted

Fretting corrosion is a form of wear which occurs at the interface of two contacting solid materials as the result of small, relative vibratory motion. It is generally identified by the presence of a red oxide, Fe203. Previously, the majority of the investigators studied the fretting corrosion between two flat specimens or between a single ball and a flat plate held in contact by a normal force. There are a number of interrelated influencing factors involved in fretting corrosion including: the vibration frequency and amplitude, the environmental conditions, the characteristics of the material, and the type of lubrication. The present investigation was conducted in order to investigate the effects of frequency and amplitude of axial vibration and the consequent accelerations acting to produce fretting damage within an unlubricated instrument ball bearing. The effect of bearing axial play on the fretting damage was also examined. The reproducibility of the damage resulting from these variables was determined.

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