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Erosion and cavity characteristics in rotating components

Veerabhadrarao, P and Syamalarao, BC and Lalshmanarao, NS (1980) Erosion and cavity characteristics in rotating components. In: Journal of Testing and Evaluation, 8 (3). pp. 127-142.

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Abstract

An investigation of the initiation and growth of erosion and of the effect of velocity and pressure on erosion in a rotating disk is presented. Also, the role of an intervening noncavitating period on erosion is studied. The results indicate that at high intensities the peak rate of erosion decreases with increases in pressure. The erosion rate/time curves obtained for metallic materials are explained by the eroded particle distribution and the cavity size. The average size of the eroded particles decreased when pressure and tensile strength of the material were increased. The erosion rate peaked after an intervening noncavitating period. The use of the rate of erosion, defined as an average over the entire test duration, in the equation governing the theory of erosion resulted in reasonably good correlations. The correlations reveal that it is possible to predict the length, width, and area of a cavity when the cavitation parameter σ is known. The normalized width of a cavity may be estimated if its normalized length is known.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ASTM International.
Keywords: erosion, cavitation corrosion, correlations, characteristics, rotating disk, cavity dimensions, prediction, secondary erosion, eroded particles, noncavitating period, cavitation parameter, theory of erosion
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Others
Date Deposited: 06 Jan 2011 08:50
Last Modified: 06 Jan 2011 08:50
URI: http://eprints.iisc.ernet.in/id/eprint/34802

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