Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components
The understanding and control of wear process can result in advances in manufacturing science. For example, Surface finishing the internal surfaces of a component built using Additive Manufacturing (AM) technique that consists of random roughness distribution throughout its surface is a key problem....
| Main Authors: | , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/136947 |
| _version_ | 1811693457927831552 |
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| author | Nagalingam, Arun Prasanth Yeo, Swee Hock |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Nagalingam, Arun Prasanth Yeo, Swee Hock |
| author_sort | Nagalingam, Arun Prasanth |
| collection | NTU |
| description | The understanding and control of wear process can result in advances in manufacturing science. For example, Surface finishing the internal surfaces of a component built using Additive Manufacturing (AM) technique that consists of random roughness distribution throughout its surface is a key problem. This paper describes an innovative approach of using hydrodynamic flow at its cavitating conditions along with freely suspended abrasive particles for finishing the internal surfaces of additive manufactured components. Experiments are conducted on cylindrical as-built aluminium alloy AlSi10Mg parts manufactured using Direct Metal Laser Sintering (DMLS) technique. Application of controlled cavitation erosion by fluids containing entrained SiC particles resulted in a 40% reduction in the average surface roughness (Sa) on the internal surface of a cylindrical specimen. Scanning electron microscope (SEM) observations showed erosion due to hydrodynamic cavitation removed most of the surface irregularities such as loosely attached and/or partially melted powders. Furthermore, direct abrasion after the addition of micro-abrasive media into the cavitating flow deformed as well as partially removed the larger-sized irregularities and resulted in smoother surfaces. |
| first_indexed | 2024-10-01T06:52:00Z |
| format | Journal Article |
| id | ntu-10356/136947 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:52:00Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1369472023-03-04T17:21:36Z Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components Nagalingam, Arun Prasanth Yeo, Swee Hock School of Mechanical and Aerospace Engineering Rolls-Royce@NTU Corporate Lab Engineering::Mechanical engineering Internal Surface Modification Hydrodynamic Cavitation The understanding and control of wear process can result in advances in manufacturing science. For example, Surface finishing the internal surfaces of a component built using Additive Manufacturing (AM) technique that consists of random roughness distribution throughout its surface is a key problem. This paper describes an innovative approach of using hydrodynamic flow at its cavitating conditions along with freely suspended abrasive particles for finishing the internal surfaces of additive manufactured components. Experiments are conducted on cylindrical as-built aluminium alloy AlSi10Mg parts manufactured using Direct Metal Laser Sintering (DMLS) technique. Application of controlled cavitation erosion by fluids containing entrained SiC particles resulted in a 40% reduction in the average surface roughness (Sa) on the internal surface of a cylindrical specimen. Scanning electron microscope (SEM) observations showed erosion due to hydrodynamic cavitation removed most of the surface irregularities such as loosely attached and/or partially melted powders. Furthermore, direct abrasion after the addition of micro-abrasive media into the cavitating flow deformed as well as partially removed the larger-sized irregularities and resulted in smoother surfaces. NRF (Natl Research Foundation, S’pore) Accepted version 2020-02-06T06:00:37Z 2020-02-06T06:00:37Z 2018 Journal Article Nagalingam, A. P., & Yeo, S. H. (2018). Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components. Wear, 414-415, 89-100. doi:10.1016/j.wear.2018.08.006 0043-1648 https://hdl.handle.net/10356/136947 10.1016/j.wear.2018.08.006 2-s2.0-85051654989 414-415 89 100 en Wear application/pdf |
| spellingShingle | Engineering::Mechanical engineering Internal Surface Modification Hydrodynamic Cavitation Nagalingam, Arun Prasanth Yeo, Swee Hock Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components |
| title | Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components |
| title_full | Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components |
| title_fullStr | Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components |
| title_full_unstemmed | Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components |
| title_short | Controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components |
| title_sort | controlled hydrodynamic cavitation erosion with abrasive particles for internal surface modification of additive manufactured components |
| topic | Engineering::Mechanical engineering Internal Surface Modification Hydrodynamic Cavitation |
| url | https://hdl.handle.net/10356/136947 |
| work_keys_str_mv | AT nagalingamarunprasanth controlledhydrodynamiccavitationerosionwithabrasiveparticlesforinternalsurfacemodificationofadditivemanufacturedcomponents AT yeosweehock controlledhydrodynamiccavitationerosionwithabrasiveparticlesforinternalsurfacemodificationofadditivemanufacturedcomponents |