This research proposes an experimental methodology towards visually observing high strain rate polymer deformation characteristics at scales relevant to cold spray particle impacts. Macro-scale (~ 3 mm) polymer impact testing via a light gas gun has shown evidence of cold spray indicative features at certain (material, particle/substrate temperature, velocity, etc.) conditions.

cold spraying, density, deformation, impact test, particle analysis, polymers, strain rate, stroboscopic imaging, viscoelastic properties, ultra high-speed videography
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2025
ASM International
Topics
Impact toughness testing Particle analysis Polymers Cold spray coating Strain rate Viscoelastic properties Density
Issue Section:
Cold Spray Process Fundamentals, Simulation, and Particle Impact