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Material Erosion Testing
Dynaflow, Inc. has experience with numerous research projects on materials resistance to erosion by cavitation and liquid droplet impact. We offer our experience and testing capabilities to our customers.
Our testing capabilities enable:
- Various ASTM Standard Erosion Testing – Cavitation erosion test using vibratory apparatus (ASTM G-32), Liquid impingement erosion test (ASTM G-73) and Erosion of solid materials by a cavitating liquid jet (ASTM G-134)
- Cavitating Jet Erosion Testing using DynaJets
- Droplet Impact Erosion Testing using DynaJets
- Accelerated testing - compressing the effects of years of service life into hours of testing
- Harsh Environment exposure
- Turbine blades
- Artificial heart valves
- Helicopter blades
- Fuel pumps
- Aircraft wings
- Ship propellers
- Radiators
- Cavitation peening
- Fuel metering Valve
Cavitating Water Jets for conducting both ASTM G-134 and other test procedures.
Cavitating Water Jets offer the advantages of:
- Rapid tests using jet facility
- Easily adjustable erosive power
- Accommodation of materials with widely differing erosion resistance
- Economical obtainment of meaningful data
- Broad range of test sample size and geometries
- Controlled ambient pressure
High Frequency Vibratory Cavitation induces growth and collapse of cavitation bubble clouds by high frequency (14-20 kHz) oscillation of a sample immersed in a liquid.
- ASTM G-32 and similar tests
- Controlled ambient temperatures and a variety of liquids
- Ultrasonic horns for conducting ASTM G-32 and similar test
Rotating Disk for studying the effects of multiple liquid drop impact
- ASTM G-73 and similar test
- Impact speed up to 750 ft/s
- Simultaneous multiple sample testing
- Sub atmospheric pressure testing
- Controlled number of impacts and test duration
Interrupted Water Jets create impulsive impact pressures from a droplet stream
- High speeds and frequencies
- Great flexibility in sample size and geometry
Dynaflow, Inc. conducts a full range of research, development, and consulting studies on erosion, cavitation, and their effects on materials including analytical, numerical and experimental work. Numerical models are available for:
- Cavitation bubble and bubble cloud dynamics and interaction with surrounding bodies
- Fluid- structure interaction effects
- The effects of stress wave propagation in multilayered media -e.g., coatings
High Frequency via magnetoslrictive device. Accelerated testing at 14-20 KHz. Rapid evaluation of materials subject lo high cycle fatigue.
Low Frequency . 3-30 Hz flexure
Exposure to a sail water environment
Split Hopkinson Pressure Bar measures properties at high loading rates which can differ significantly from those for quasi static loading.
- Compressive and tensile stress-strain curves
- Fracture
- Strain rates in the thousands of in/in/sec
