On the importance of initial volume of eroded material for cavitation erosion curve

• Autorzy: Szkodo M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Cavitation erosion is a surface degradation mechanism which occurs most frequently in fluid-flow machines operating in cavitation conditions. To find way to prediction the cavitation erosion progress, simple mathematical model was proposed. Design/methodology/approach: The model assumes that curve of cumulative volume loss as a function of time approaches initial volume of eroded material. This principle causes dependence of cavitation erosion curve not only from mechanical properties of eroded material and cavitation loading but also from dimensions of initial volume i.e. eroded area of material and even height of cross-section of eroded initial volume of material. Findings: Assessment of cavitation erosion resistant of material upon the base of cavitation erosion curve has to take into account this influence. In the paper the influence of these parameters on the cavitation erosion curve was discussed. Research limitations/implications: Future research concerning cavitation erosion resistance of materials ought to takes into account influence of initial volume of eroded material for cavitation erosion curve. Reported research ought to be completed and full cavitation curves (volume loss in time) for different initial volume of eroded material must be done. Practical implications: Existing standards have recommended assessment of cavitation erosion resistance of materials by comparison of their erosion curves (volume loss in time and volume loss rate of erosion). For this reason one should strive to explanation all factors influencing on the cavitation erosion curve. Originality/value: The work proposes a mathematical model which permits to define the influence of initial volume of eroded material on the cavitation erosion curve.

Słowa kluczowe

EN

computational material science; cavitation erosion curve; evaluation of cavitation erosion resistance

PL

komputerowa nauka o materiałach; erozja kawitacyjna; odporność na erozję kawitacyjną; ocena odporności na erozję kawitacyjną

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 18, nr 1-2
• Strony: 311--314
• Opis fizyczny: Bibliogr. 15 poz., rys., wykr.

Twórcy

autor

Szkodo M.

• Faculty of Mechanical Engineering, Gdańsk University of Technology, 80-952 Gdansk, ul. Narutowicza 11/12, Poland

Bibliografia

• [1] R. Bugała, M. Szkodo, The effect of cavitation loading spectrum on micro hardness in an Al alloy AlMg2Mn, Wear 233-235 (1999) 75-78.
• [2] A. Karimi, J.L. Martin, Cavitation erosion of materials Int. Metals Rev. 31(1) (1986) 1-26.
• [3] H. Krause, M. Mathias, Investigation of cavitation erosion using X-ray residual stress analysis, Wear 119 (1987) 343-352.
• [4] Y. Terauchi, H. Matuura, M. Kitamura, Correlation of cavitation damage tests with residual stress measurements, Bull. JSME 16 (1973) 1829-1840.
• [5] J. Steller (Ed.), International Cavitation Erosion Test. Preliminary Report. Part I: Co-ordinator’s Report. IMP PAN Rep. 19/1998.
• [6] J. Steller (Ed.), International Cavitation Erosion Test. Preliminary Report. Part II: Experimental data. IMP PAN Rep. 20/1998.
• [7] J. Steller, International Cavitation Erosion Test and quantitative assessment of material resistance to cavitation, Wear 233-235 (1999) 51-64.
• [8] J. Steller, in: Pump Congress Karlsruhe’92, October 1992, Fachgemeinschaft Pumpen im VDMA, Frankfurtr M., 1992, Paper B4-06.
• [9] M. Szkodo, Mathematical description and evaluation of cavitation erosion resistance of materials, Journal of Materials Processing Technology, 164-165 (2005) 1631-1636.
• [10] Y. Meged, Modeling of the initial stage in vibratory cavitation erosion tests by use of a Weibull distribution, Wear 253 (2002) 914–923.
• [11] A.P. Thiruvengadam, A symposium presented at the 69th Annual Meeting, ASTM, Atlantic City, 1966. ASTM Special Technical Publication no. 408 (1966) 22–35.
• [12] J. Steller, A. Krella, J. Koronowicz, W. Janicki, Towards quantitative assessment of material resistance to cavitation erosion, Wear 258 (2005) 604-613.
• [13] ASTM Standard G32-85.
• [14] CSN 015082-76 (Czech Standards).
• [15] PN-86/H-04427 Polish Standard.