An analytical model is proposed for the prediction of cavitation erosion of ductile materials. It is based upon a physical analysis of the work-hardening process due to the successive bubble collapses. The material is characterized by its classical stress-strain relationship and its metallurgical behavior is analyzed from microhardness measurements on cross sections of eroded samples. The flow aggressiveness is determined from pitting tests, using the material properties to go back to the impact loads. The histogram of impact loads is applied numerically a large number of times on the material surface and the evolution of the mass loss with the exposure time is computed. The approach is supported by experimental tests.
Issue Section:
Technical Papers
1.
Hammitt
, F. G.
, 1979
, “Cavitation Erosion: The State of The Art And Predicting Capability
,” Appl. Mech. Rev.
, 32
(6
), pp. 665
–675
.2.
Karimi
, A.
, and Martin
, J. L.
, 1986
, “Cavitation Erosion of Materials
,” Int. Met. Rev.
, 31
(1
), pp. 1
–26
.3.
Franc
, J. P.
, and Michel
, J. M.
, 1997
, “Cavitation Erosion Research in France: The State of The Art
,” Journal of Marine Science and Technology
, 2
, pp. 233
–244
.4.
Kato
, H.
, Konno
, A.
, Maeda
, M.
, and Yamaguchi
, H.
, 1995
, “Possibility of Quantitative Prediction of Cavitation Erosion Without Model Test
,” ASME J. Fluids Eng.
, 118
, pp. 582
–588
.5.
Karimi
, A.
, and Leo
, W. R.
, 1987
, “Phenomenological Model for Cavitation Rate Computation
,” Mater. Sci. Eng.
, 95
, pp. 1
–14
.6.
Dominguez-Cortazar
, M.
, Franc
, J. P.
, and Michel
, J. M.
, 1997
, “The Erosive Axial Collapse of a Cavitating Vortex: An Experimental Study
,” ASME J. Fluids Eng.
, 119
(3
), pp. 686
–691
.7.
Filali
, E. G.
, and Michel
, J. M.
, 1999
, “The Cavermod Device: Hydrodynamic Aspects And Erosion Tests
,” ASME J. Fluids Eng.
, 121
, pp. 305
–311
.8.
Filali
, E. G.
, Michel
, J. M.
, Hattori
, S.
, and Fujikawa
, S.
, 1999
, “The Cavermod Device: Force Measurements
,” ASME J. Fluids Eng.
, 121
, pp. 312
–317
.9.
Belahadji
, B.
, Franc
, J. P.
, and Michel
, J. M.
, 1991
, “A Statistical Analysis of Cavitation Erosion Pits
,” ASME J. Fluids Eng.
, 113
, pp. 700
–706
.10.
Berchiche, N., 2000, “Erosion De Cavitation d’un Me´tal Ductile: E´tude Expe´rimentale Et Mode´lisation,” PhD thesis Institut National Polytechnique de Grenoble (in French).
11.
Kubota
, A.
, Kato
, H.
, and Yamaguchi
, H.
, 1992
, “A New Modelling of Cavitating Flows: A Numerical Study of Unsteady Cavitation on a Hydrofoil Section
,” J. Fluid Mech.
, 240
, pp. 59
–96
.Copyright © 2002
by ASME
You do not currently have access to this content.
