Journal Published Online: 01 May 1981
Volume 9, Issue 3

Estimation of Cavitation Erosion with Incubation Periods and Material Properties

CODEN: JTEVAB

Abstract

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.

Author Information

Veerabhadra Rao, P
Georgia Institute of Technology, School of Civil Engineering, Atlanta, Ga.
Martin, CS
Georgia Institute of Technology, School of Civil Engineering, Atlanta, Ga.
Syamala Rao, BC
Indian Institute of Science, Bangalore, India
Lakshmana Rao, NS
Indian Institute of Science, Bangalore, India
Pages: 9
Price: $25.00
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Stock #: JTE11555J
ISSN: 0090-3973
DOI: 10.1520/JTE11555J