Overview
Projects
ASTM testing
Technical Drawings
The cavitation erosion rig is a custom built rig using an ultrasonic horn to induce cavitation bubble creation, the bubbles then collapse on the surface, producing a supersonic micro-jet that erodes the surface underneath the horn. This is referred to ‘indirect’ mode of cavitation. The rig complies with ASTM G32, operating at 20 MHz at a displacement of 50 µm. Tests can be conducted in distilled water for pure erosion and salt water for erosion-corrosion experiments.
The rig has been used for study of propeller materials for naval and commercial shipping applications, as well as erosion-resistance of candidate solutions for leading edge turbine blade protection.
Various papers have been produced from the use of this rig and links to DOIs:
- Synergistic effects of cavitation erosion and corrosion for nickel aluminium bronze with oxide film in 3.5% NaCl solution
- Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution
- Cavitation erosion performance of CVD W/WC coatings
- Cavitation erosion performance of CrAlYN/CrN nanoscale multilayer coatings deposited on Ti6Al4V by HIPIMS
- Different methods of measuring synergy between cavitation erosion and corrosion for nickel aluminium bronze in 3.5% NaCl solution
The rig complies with ASTM G32, operating at 20 MHz at a displacement of 50 µm. The amplitude is set up using a Keyence High-speed, High-accuracy CCD Laser Displacement Sensor.
The ASTM G32 can be found at this link.
Cavitation samples are 25 × 25 mm, below is a technical drawing that can be used to make the samples.