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RESEARCH PAPERS

Simultaneous Pressure Measurement and High-Speed Photography Study of Cavitation in a Dynamically Loaded Journal Bearing

[+] Author and Article Information
D. C. Sun

Department of Mechanical and Industrial Engineering, State University of New York at Binghamton, Binghamton, New York 13902-6000

D. E. Brewe

U.S. Army Aviation Research and Technology Activity-AVSCOM, Lewis Research Center, Cleveland, Ohio 44135

P. B. Abel

NASA Lewis Research Center, Cleveland, Ohio 44135

J. Tribol 115(1), 88-95 (Jan 01, 1993) (8 pages) doi:10.1115/1.2920991 History: Received February 26, 1992; Revised August 01, 1992; Online June 05, 2008

Abstract

Cavitation of the oil film in a dynamically loaded journal bearing was studied using high-speed photography and pressure measurement simultaneously. Comparison of the visual and pressure data provided considerable insight into the occurrence and non-occurrence of cavitation. It was found that (1), cavitation typically occurred in the form of one bubble with the pressure in the cavitation bubble close to the absolute zero; and (2), for cavitation-producing operating conditions, cavitation did not always occur; with the oil film then supporting a tensile stress.

Copyright © 1993 by The American Society of Mechanical Engineers
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