Dynaflow, Inc.® has experience with numerous research projects on materials resistance to erosion by cavitation and liquid droplet impact. Based on our experience, we offer accelerated erosion testing service and consulting services to our customer. We can conduct full range of R&D and consulting studies on material erosion, cavitation, and liquid impacts including analytical, numerical, and experimental work.

Our unique experimental capabilities include:

  • Various ASTM1 Standard Erosion Testing including ASTM G32 “Test Method for Cavitation Erosion Using Vibratory Apparatus”, ASTM G73 “Liquid impingement erosion test”, ASTM G134 “Test Method for Erosion of Solid Materials by a Cavitating Liquid Jet”, and ASTM G76 "Test Method for Conducting Erosion Tests by Solid Particle Impigment using Gas Jets", etc.
  • 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
  • Simulated harsh environment, replicating the effect of harsh conditions in controlled laboratory environment
  • Split Hopkinson Pressure Bar (SHPB) Tests for the study of high strain rate material properties
Metallic Sample Eroded by Ultrasonic Cavitation. Composite material sample tested with jet droplet erosion.

We also have numerical modeling capability for the study of:

  • Cavitation bubble and bubble cloud dynamics near free and solid boundaries, and the impact load of collapsing bubbles
  • Fluid-Structure Interaction (FSI) effects of bubble collapse near deformable body
  • Stress wave propagation in materials, multilayered media, and coatings

Dynaflow owns various testing facilities and has experienced staff who has knowledge and experience in both experimental and theoretical studies of erosion. We can assist our customers to select proper test methods, plan and conduct erosion tests, and interpret the test results.

Recent Applications Include:

Cavitation erosion studies

  • Ship propellers
  • Waterjet impellers
  • Marine coatings
  • Various (metallic, ceramic, elastomeric) coatings
  • Mechanical heart valves
  • Engine components
  • Fuel pumps/injectors
  • Flow valves
  • Heat exchanger
  • Cavitation peening

Droplet  and Solid Particle impact erosion studies

  • Helicopter blades
  • Turbine blades
  • Aircraft wings
  • Hovercraft lifting fan coatings
  • New coating material development (metallic, ceramic, elastomeric)
  • Coating thickness optimization
  • Pipe lining coating material
  • Effect of surface heat treatments
  • Valves

Material properties studies

  • Composite materials
  • Metals
  • Rock Samples

Erosion Testing Facilities