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Abstract

Experiments of cavitation erosion are performed on a surface using the “stationary specimen method”. A small diameter horn of 5mm is selected instead of using the standard horn of 15.9mm. The experiments are performed according to these parameters: an excitation frequency of the horn of 20 KHz, a gap between the horn and the specimen within the range from 0.05mm to 0.5mm and the displacement amplitude of the horn within a range of 15μm to 50μm. After examination of the samples two erosion patterns can be clear distinguished, one circular shape centred in the origin and a ring shape around. Moreover, it has been observed that the diameter of this ring shape, the cavitation ring region, is a function that depends on the amplitude and the gap. Existence of the cavitation ring region under the mentioned conditions is explained using a theoretical model based on the combination of Fluid Mechanics and Analytical Mechanics. Results after application of this model reveal the satisfactory agreement between the numerical output and the experimental data.

Available Versions of this Item

• Experimental Study and Analytical Model of the Cavitation Ring Region With Small Diameter Ultrasonic Horn. (deposited 22 Oct 2009 17:54)
  • Experimental Study and Analytical Model of the Cavitation Ring Region With Small Diameter Ultrasonic Horn. (deposited 20 Jan 2010 21:01) [Currently Displayed]