Author(s): I Bordeasu; M O Popoviciu; V Balasoiu; A D Jurchela; A Karabenciov

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Keywords: Cavitation erosion; Vibratory test facility; Magnetostrictive device; Piezoceramic device

Abstract: Paper analyses the configuration of area and depth for the laboratory produced cavitation erosion. The affected zones were examined using both an optic microscope and a device for obtaining the cross-sectional profile of the eroded area. The cavitation was produced with a nickel tube magnetostrictive device (vibration amplitude 94 μm, vibration frequency 7 kHz, specimen diameter 14 mm and power 500 W) as well as with a standard piezoceramic crystals device (vibration amplitude 50 μm, vibration frequency 20 kHz, specimen diameter 16 mm and the power 500 W). The test specimens were manufactured from two different materials (steel and bronze). We found that the vibrations amplitude has greater influence upon the erosion (we obtained increase in the erosion maximum depth, in the total eroded mass and in the erosion velocity). Regardless of the running parameters, the way in which the deformations, the cracks and the dislocations are produced, is very similar.

DOI: https://doi.org/10.1088/1755-1315/12/1/012037

Year: 2010