Designing energy dissipation properties via thermal spray coatings
| Autor: | Aaron Christopher. Hall, Jonathan D. Madison, Matthew R. W. Brake |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Imagination
Work (thermodynamics) Materials science media_common.quotation_subject Mechanical engineering 02 engineering and technology Surfaces and Interfaces General Chemistry Work hardening Dissipation 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure Surfaces Coatings and Films 020303 mechanical engineering & transports 0203 mechanical engineering Coefficient of restitution Materials Chemistry Dissipative system Composite material 0210 nano-technology Thermal spraying media_common |
| Zdroj: | Surface and Coatings Technology. 310:70-78 |
| ISSN: | 0257-8972 |
| DOI: | 10.1016/j.surfcoat.2016.12.034 |
| Popis: | The coefficient of restitution is a measure of energy dissipation in a system across impact events. Often, the dissipative qualities of a pair of impacting components are neglected during the design phase. This research looks at the effect of applying a thin layer of metallic coating, using thermal spray technologies, to significantly alter the dissipative properties of a system. The dissipative properties are studied across multiple impacts in order to assess the effects of work hardening, the change in microstructure, and the change in surface topography. The results of the experiments indicate that any work hardening-like effects are likely attributable to the crushing of asperities, and the permanent changes in the dissipative properties of the system, as measured by the coefficient of restitution, are attributable to the microstructure formed by the thermal spray coating. Further, the microstructure appears to be robust across impact events of moderate energy levels, exhibiting negligible changes across multiple impact events. |
| Databáze: | OpenAIRE |
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