Comparative Studies of Drop Impingement Erosion and Cavitation Erosion

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Comparative Studies of Drop Impingement Erosion and Cavitation Erosion

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St. Anthony Falls Hydraulic Laboratory




It has been theorized that the fundamental mechanism of cavitation erosion was essentially the same as that of impingement erosion. The tests conducted in this study were intended to provide additional cavitation and impingement data to support this theory. The tests were conducted on three materials supplied for an ASTM round-robin cavitation test program. Complete cavitation tests and limited impingement tests on the three ASTM materials are described together with test data on two other metals. Further descriptive material on details for impingement testing is also included. Only a limited comparison of cavitation and impingement erosion was possible with the data available. This suggests that accelerated laboratory erosion tests may, in fact, over-accelerate the erosion to such an extent that it is not possible to tie the observed erosion to the prototype problem.



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Fluid Dynamics Branch of the Office of Naval Research; Naval Ship Research and Development Center

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Ripken, John. (1969). Comparative Studies of Drop Impingement Erosion and Cavitation Erosion. Retrieved from the University Digital Conservancy,

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