Biomedical Engineering Reference
In-Depth Information
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Figure 1. Effects of Impact Velocity and Particle Diameter. Reproduced with
permission.
The problem of this study is to experimentally develop a simple, cost
effective device capable of projecting particles of various size and material
types onto substrates with precise control of impact velocity for research
purposes. This device allows for further investigation of effects on the
substrate from desired high-speed impacts. To achieve this, an accurate
method of determining impact velocity must also be developed before
measurements can be recorded. This data will additionally be used in an
attempt to correlate experimental design of the pneumatic projector to
analytical models and numerical simulations for prediction of impact
velocities. Unlike existing projection device technologies employing
continuous gas flow through a nozzle, a single-shot approach is taken in an
attempt to make the process more cost effective.
Existing surface treatments for materials can be employed to achieve
desirable characteristics including improved wear resistance, thermal
insulation, environmental protection, electrical conductivity, and oxidation
protection. While significant research has been carried out to investigate
effects of high-speed particle impacts for the purpose of enhancing surface
