Studies on aggressive mass finishing for metal component remanufacturing
This thesis introduces a novel vibratory finishing machine designed for the aerospace industry, featuring a domeless, circular vibratory finishing bowl. The study aims to explore the machine's advantages over conventional dome vibrators, particularly for annular components, with limited existin...
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| Format: | Thesis-Master by Research |
| Language: | English |
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Nanyang Technological University
2024
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| Online Access: | https://hdl.handle.net/10356/172925 |
| _version_ | 1826109818214023168 |
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| author | Ho, Jeremy Weng Keong |
| author2 | Yeo Swee Hock |
| author_facet | Yeo Swee Hock Ho, Jeremy Weng Keong |
| author_sort | Ho, Jeremy Weng Keong |
| collection | NTU |
| description | This thesis introduces a novel vibratory finishing machine designed for the aerospace industry, featuring a domeless, circular vibratory finishing bowl. The study aims to explore the machine's advantages over conventional dome vibrators, particularly for annular components, with limited existing literature in this area.
The investigation focuses on the domeless-type vibrofinishing process, analysing its performance based on varying component-machine sizing and orientation. Results indicate that airfoil orientation relative to the media flow has the greatest impact on material removal. The optimal position for surface finishing is at a 45-degree angle, resulting in the highest surface roughness improvement and material removal. Certain airfoil positions lead to reduced media flow and stagnation, negatively affecting the finishing process. The study also explores indirect media interaction, where media particles interact with surfaces not directly exposed to the primary media flow, contributing to material removal and surface finishing with approximately half the effectiveness of direct contact.
Furthermore, the thesis three vibrofinishing techniques - domeless, dome, and trough – theoretically, experimentally, and economically. Theoretical analysis demonstrates the potential for more efficient processing with the domeless design, with an 80.5% increase in excitation force and up to 144.6% increase in excitation moment compared to the dome design. Experimental results confirm higher material removal in domeless vibrofinishing, while the trough process fails to meet surface roughness requirements. Cost analysis reveals significant differences in capital and operational expenses, with potential cost savings of 70.3% and 60.3% by adopting the domeless bowl to replace the trough and dome bowl, respectively.
In conclusion, this thesis provides strong evidence for a domeless vibratory finishing machine’s advantages in material removal and surface roughness improvement. The experimental and theoretical analysis conducted demonstrates the potential for more efficient processing, higher material removal rate, and cost benefits when compared to the conventional designs. |
| first_indexed | 2024-10-01T02:24:16Z |
| format | Thesis-Master by Research |
| id | ntu-10356/172925 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:24:16Z |
| publishDate | 2024 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1729252024-02-01T09:53:45Z Studies on aggressive mass finishing for metal component remanufacturing Ho, Jeremy Weng Keong Yeo Swee Hock School of Mechanical and Aerospace Engineering Spire Pte Ltd Advanced Remanufacturing and Technology Centre Tan Kai Liang MSHYEO@ntu.edu.sg, tan_kai_liang@artc.a-star.edu.sg Engineering::Mechanical engineering::Kinematics and dynamics of machinery This thesis introduces a novel vibratory finishing machine designed for the aerospace industry, featuring a domeless, circular vibratory finishing bowl. The study aims to explore the machine's advantages over conventional dome vibrators, particularly for annular components, with limited existing literature in this area. The investigation focuses on the domeless-type vibrofinishing process, analysing its performance based on varying component-machine sizing and orientation. Results indicate that airfoil orientation relative to the media flow has the greatest impact on material removal. The optimal position for surface finishing is at a 45-degree angle, resulting in the highest surface roughness improvement and material removal. Certain airfoil positions lead to reduced media flow and stagnation, negatively affecting the finishing process. The study also explores indirect media interaction, where media particles interact with surfaces not directly exposed to the primary media flow, contributing to material removal and surface finishing with approximately half the effectiveness of direct contact. Furthermore, the thesis three vibrofinishing techniques - domeless, dome, and trough – theoretically, experimentally, and economically. Theoretical analysis demonstrates the potential for more efficient processing with the domeless design, with an 80.5% increase in excitation force and up to 144.6% increase in excitation moment compared to the dome design. Experimental results confirm higher material removal in domeless vibrofinishing, while the trough process fails to meet surface roughness requirements. Cost analysis reveals significant differences in capital and operational expenses, with potential cost savings of 70.3% and 60.3% by adopting the domeless bowl to replace the trough and dome bowl, respectively. In conclusion, this thesis provides strong evidence for a domeless vibratory finishing machine’s advantages in material removal and surface roughness improvement. The experimental and theoretical analysis conducted demonstrates the potential for more efficient processing, higher material removal rate, and cost benefits when compared to the conventional designs. Master of Engineering 2024-01-07T12:34:17Z 2024-01-07T12:34:17Z 2023 Thesis-Master by Research Ho, J. W. K. (2023). Studies on aggressive mass finishing for metal component remanufacturing. Master's thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/172925 https://hdl.handle.net/10356/172925 10.32657/10356/172925 en This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0). application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Mechanical engineering::Kinematics and dynamics of machinery Ho, Jeremy Weng Keong Studies on aggressive mass finishing for metal component remanufacturing |
| title | Studies on aggressive mass finishing for metal component remanufacturing |
| title_full | Studies on aggressive mass finishing for metal component remanufacturing |
| title_fullStr | Studies on aggressive mass finishing for metal component remanufacturing |
| title_full_unstemmed | Studies on aggressive mass finishing for metal component remanufacturing |
| title_short | Studies on aggressive mass finishing for metal component remanufacturing |
| title_sort | studies on aggressive mass finishing for metal component remanufacturing |
| topic | Engineering::Mechanical engineering::Kinematics and dynamics of machinery |
| url | https://hdl.handle.net/10356/172925 |
| work_keys_str_mv | AT hojeremywengkeong studiesonaggressivemassfinishingformetalcomponentremanufacturing |