In the present work, the topographical images of cavitation erosion surfaces at water and oil-in-water (o/w) emulsions were quantified using fractal analysis. The oil-in-water emulsion concentrations were 2, 5 and 10 wt. %, which are in the popular range used in hydraulic systems. The study showed that the variation of fractal dimension calculated from slope of linearized power spectral density for water and o/w emulsions can be used to characterize the cavitation intensity in similar manner to the weight loss. Both the fractal dimension and the weight loss decrease with adding oil to water. It was also found that the variation of fractal dimension versus concentration of oil-in-water emulsions has a general trend that does not depend on magnification factor. The cavitation erosion behavior and mechanism for water and o/w emulsions has been studied. It was found that the predominant failure mode was fatigue for water and o/w emulsions.
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October 2011
Research Papers
Fractal Analysis of Cavitation Eroded Surface in Dilute Emulsions
A. Abouel-Kasem,
A. Abouel-Kasem
Mechanical Engineering Department, Faculty of Eng.-Rabigh,
King Abdulaziz University
, P.O. Box 344, Rabigh 21911, Kingdom of Saudi Arabia
; Department of Mechanical Engineering, Assiut University, Assiut 71516, Egypt e-mail:
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F. A. Alturki,
F. A. Alturki
Electrical Engineering Department, King Saud University,
Majmaah University
, Saudi Arabia e-mail:
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S. M. Ahmed
S. M. Ahmed
Mechanical Engineering Department, Faculty of Engineering,
Majmaah University
, North Riyadh, Kingdom of Saudi Arabia
e-mail:
Search for other works by this author on:
A. Abouel-Kasem
Mechanical Engineering Department, Faculty of Eng.-Rabigh,
King Abdulaziz University
, P.O. Box 344, Rabigh 21911, Kingdom of Saudi Arabia
; Department of Mechanical Engineering, Assiut University, Assiut 71516, Egypt e-mail:
F. A. Alturki
Electrical Engineering Department, King Saud University,
Majmaah University
, Saudi Arabia e-mail:
S. M. Ahmed
Mechanical Engineering Department, Faculty of Engineering,
Majmaah University
, North Riyadh, Kingdom of Saudi Arabia
e-mail: J. Tribol. Oct 2011, 133(4): 041403 (9 pages)
Published Online: October 10, 2011
Article history
Received:
February 27, 2011
Revised:
August 15, 2011
Online:
October 10, 2011
Published:
October 10, 2011
Citation
Abouel-Kasem, A., Alturki, F. A., and Ahmed, S. M. (October 10, 2011). "Fractal Analysis of Cavitation Eroded Surface in Dilute Emulsions." ASME. J. Tribol. October 2011; 133(4): 041403. https://doi.org/10.1115/1.4004927
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