ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 21 October 2004
Page Count: 12

Modeling of Cumulative Mass Loss—Time Curves for Six Erosion and Abrasion Test Methods

Meged, Y
Haifa,

(Received 20 June 2003; accepted 21 April 2004)

Abstract

Cumulative mass loss-time curves of six erosion and abrasion test methods are studied. These methods include: vibratory cavitation erosion, film cavitation erosion, flow cavitation erosion, cavitating liquid jet erosion, liquid impact erosion, and slurry abrasion. It has been previously well established that the cumulative erosion-time curves of vibratory cavitation erosion tests can be modeled by the Weibull cumulative distribution function. Validity of this model is further extended for the five additional erosion test methods.

The typical Weibull plot for these test methods is bimodal, consisting of two intersecting straight lines. Mode 1 of the plot represents the boundary layer, and Mode 2 represents the base material of the specimen. This type of plot is the result of a two-layered test specimen.

Data obtainable from the cumulative erosion-time curve are rather limited, since the analysis is empirical. Analysis of the Weibull cumulative distribution function plots yields much more information, and facilitates the evaluation of the test specimen's structure, test procedure, and test results.

Keywords:
erosion test methods, abrasion test method, cumulative erosion-time curve, Weibull cumulative distribution function, modeling, Weibull bimodal plot, affected material zone, erosive boundary layer

Paper ID: JTE12057
DOI: 10.1520/JTE12057
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