2022 Fiscal Year Annual Research Report
Electro-acoustic stimulation assisted nano-abrasive blasting system
| Project/Area Number |
20K04192
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| Research Institution | Kyoto University |
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Principal Investigator |
ブカン アントニー 京都大学, 工学研究科, 特定准教授 (30756838)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | nano-abrasive blasting / super-fine finishing / particle agglomerates / material removal rate / surface roughness / acoustic streaming |
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| Outline of Annual Research Achievements |
The process was investigated by smooth particle hydrodynamics modelling and experimental validation, using the prototype system. Blasting experiments (with/without ultrasonic assistance) were carried out on transparent glass windows while observing the ablation zone from behind.
The following observations were found in both simulations and experiments:
(1) De-agglomeration of abrasives by ultrasonic pre-processing makes the flow of particles over the blasted surface more uniform and regular (agglomerates tend to scatter on impact, which impedes the flow of subsequent abrasives).
(2) De-agglomeration was also found to prevent unintended coating of the surface, (surface smearing by scattered agglomerates).
Additionally, an algorithm for feed scheduling of the blasting process was developped.
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