Modeling Impacts for Cold-Gas Dynamic Spray

Report No. ARL-TR-3890
Authors: William S. de Rosset
Date/Pages: September 2006; 32 pages
Abstract: A one-dimensional penetration model has been developed to analyze the cold-gas dynamic spray process in hopes of establishing a constant minimum normalized penetration depth for particle adhesion. The simple model was in disagreement with results extrapolated from published copper-on-steel impact data. Possible reasons for the disagreement are discussed. A possible bonding mechanism is proposed that is dependent on the flow properties of both the particle and substrate.
Distribution: Approved for public release
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Last Update / Reviewed: September 1, 2006