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2,028 results on '"Das, S.K."'

165. A probabilistic model to characterize erosion-oxidation damage on boiler grade steel impacted by solid particle

Author

Das, S.K., Hegde, Shubha, Godiwalla, K.M., Mehrotra, S.P., and Dey, P.K.

Subjects
Tribology -- Analysis, Tribology -- Models, Runoff -- Analysis, Runoff -- Models, Steel -- Analysis, Steel -- Models, Erosion -- Analysis, Erosion -- Models, Heating -- Equipment and supplies, Heating -- Analysis, Heating -- Models, Science and technology
Abstract

A probabilistic model based methodology has been applied to describe the relative rate of material loss from the steel surface subjected to simultaneous action of high temperature oxidation and mechanical erosion. Growth of the oxide scales is treated deterministically and erosion is described using an established probabilistic modeling methodology. Oxidation is described with a parabolic growth law to quantify the rate of growth of the oxide scales, namely; nickel, iron, and chromium, respectively. In consonance with the published model, erosion is treated using a probabilistic methodology as spatially random phenomena on the oxide surface. The model has been applied to predict the relative erosive loss of material as a function of time resulted as a consequence of influence oxidation on mechanical erosion in a synergetic manner. Keywords: probabilistic modeling, erosion-oxidation interaction, oxidation kinetics, erosion footprint, scale thickness, gamma function, dimensionless variables

Published
2008

193. Large amplitude free vibration analysis of a rotating beam with non-linear spring and mass system

Author

Das, S.K., Ray, P.C., and Pohit, G.

Subjects
Time-series analysis -- Usage -- Analysis, Vibration -- Analysis -- Usage, Physics, Usage, Analysis
Abstract

Abstract: The free, out-of-plane vibration of a rotating beam with a non-linear spring--mass system has been investigated. The non-linear constraint appears in the boundary condition. The solution is obtained by [...]

Published
2005

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