Characterization and Prediction of Surface Erosion Caused from High-Speed Micrometer Particle Impacts on Metallic Materials

Austin J. Andrews, Ioannis Pothos, Nathan A. Bellefeuille, Hasan F. Celebi, Bernard A. Olson, Christopher J. Hogan, Thomas E. Schwartzentruber

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Materials selected for high-speed vehicles must withstand a wide range of extreme conditions, including encounters with airborne particulate matter. For vehicles traveling in excess of 1km s-1, solid particles in the micro meter size range can cause damage to vehicle surfaces, with potential to alter surface heating and leading to vehicle failure. Therefore, an understanding of material performance under high speed particle impacts for a variety of materials is in need. Here we present on going experimental characterization of single micro meter particle impact events onto various metallic surfaces including Aluminum 6061-T6, Copper 110 and Nickel 200.These surfaces are impacted by mono disperse 1.8 and 6.2 µm diameter ferrous sulfate and 2.2 µm diameter ammonium sulfate particles in the velocity range of 0.2 to 0.9 km s-1 at various impact angles with impact velocities measured by laser Doppler velocimetry. Post-mortem surface topology analysis is carried out using atomic force microscopy. We utilize commonly used dimensionless groups that describe crater formation to establish empirical relationships between the resulting topology changes and the properties of the impacting particles. We observe that crater formation is sensitive to the density ratio between the projectile and target material. Accounting for this density ratio, we suggest the existence of a power law relationship between dimensionless groups for a wide range of ductile materials. We find that dimension less crater volume for both copper and aluminum scales with dimensionless material strength with a scaling exponent of -1.5 for a wide range of impact conditions.

Original languageEnglish (US)
Title of host publicationAIAA SciTech Forum and Exposition, 2024
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624107115
StatePublished - 2024
EventAIAA SciTech Forum and Exposition, 2024 - Orlando, United States
Duration: Jan 8 2024Jan 12 2024

Publication series

NameAIAA SciTech Forum and Exposition, 2024


ConferenceAIAA SciTech Forum and Exposition, 2024
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 2024 by Austin J. Andrews.


Dive into the research topics of 'Characterization and Prediction of Surface Erosion Caused from High-Speed Micrometer Particle Impacts on Metallic Materials'. Together they form a unique fingerprint.

Cite this