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Estimation of Cavitation Erosion with Incubation Periods and Material Properties

Rao, Prahlada BB and Martin, CS and Rao, BC Syamala and Rao, NS Lakshmana (1981) Estimation of Cavitation Erosion with Incubation Periods and Material Properties. In: Journal Of Testing And Evaluation, 9 (3). pp. 189-197.

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A detailed study of the normalized correlations between the incubation period tc and the properties of various materials tested in a rotating disk device indicates that, at very high intensities, the strength properties influence the duration of tc. The analysis of extensive data from other laboratories for cavitation and liquid impingement erosion also indicates that, while both energy and strength properties influence the duration of tc, the latter ones predominate for a majority of cases. A fatigue-type failure occurs during tc. For estimating the time required to pierce a metallic specimen in a rotating device a relationship tp = 160 tc0.44 is proposed. A detailed study of normalized correlations between erosion resistance (inverse of erosion rate) and tc values of different materials tested in the rotating disk shows that correlations are good. Analysis of data from eight other investigators clearly points out the validity and the usefulness of this type of prediction.

Item Type: Journal Article
Publication: Journal Of Testing And Evaluation
Publisher: ASTM International
Additional Information: Copyright of this article belongs to ASTM International.
Keywords: erosion, cavitation, predictions, fatigue (materials), incubation period, correlations, intensities, interaction, liquid impact, failure, rotating disk.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 22 Jul 2009 07:21
Last Modified: 01 Aug 2011 05:27
URI: http://eprints.iisc.ac.in/id/eprint/21670

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