Laboratory Testing Methods of Cavitation Erosion

Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution

“…The ultrasonic vibratory apparatus was used for the research as it is the most commonly used device that produces a periodic pressure field, inducing the periodic growth and collapse of a cloud of cavitation bubbles [54]. The ultrasonic vibration mechanism also provides the fastest approach to obtaining cavitation results for a wide range of engineering materials amongst all the various cavitation test methods [55]. The indirect cavitation method was chosen in order to conduct in-situ electrochemical analysis.…”

Improvement of cavitation erosion resistance of structural metals by alternating magnetic field treatment

“…The cavitation erosion investigation for treated and untreated alloys was carried out in compliance with the ASTM G32-10 standard [32] through a vibratory cavitation apparatus using the stationary specimen method [32,33]. The test apparatus consisted of a dedicated ultrasonic device (Vibra Sonic), which was operated at a maximum electrical peak power of 750 W and a frequency equal to 20 kHz ± 50 Hz with a vibration amplitude of 50 lm.…”

“…For the NAB sample the cavitation erosion tests were tested up to 8 h. The mass loss due to cavitation was weighed using a precision balance (Denver Instrument). The ultrasonic horn induces the cyclic formation of very high and very low pressures [33]. This process induces the formation and collapse of cavities in the liquid which causes the cavitation erosion damage of the specimen [32,33].…”

“…The ultrasonic horn induces the cyclic formation of very high and very low pressures [33]. This process induces the formation and collapse of cavities in the liquid which causes the cavitation erosion damage of the specimen [32,33]. Table 2 shows the initial mass of the EN8 steel, NAB, 70/30 brass alloy and AA2014-T6 cavitation erosion samples.…”

Evaluation of Internal Cohesion of Multiphase Plasma-Sprayed Coatings by Cavitation Test: Feasibility Study

“…It may be relatively easily adapted and simulates conditions in applications where the cavitation occurs, such as hydraulic turbines, pumps, steering rudders, etc. [7,8]. Sample (in this case a coated part) is immersed into appropriate liquid and its surface is repeatedly exposed to aggressive pressure waves generated by collapse of cavitation bubbles.…”