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Fabrication of Metal Micro-pin Array for Mechanical Interlocking on Rough Surface : 거친 표면에 인터로크를 위한 금속 미세 핀 배열의 가공
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 주종남 | - |
dc.contributor.author | 이세원 | - |
dc.date.accessioned | 2017-07-13T06:13:57Z | - |
dc.date.available | 2017-07-13T06:13:57Z | - |
dc.date.issued | 2014-02 | - |
dc.identifier.other | 000000018044 | - |
dc.identifier.uri | https://hdl.handle.net/10371/118372 | - |
dc.description | 학위논문 (박사)-- 서울대학교 대학원 : 기계항공공학부, 2014. 2. 주종남. | - |
dc.description.abstract | In this research, fabrication of metal micro-pin array for mechanical interlocking on rough surface was carried out. Nanosecond pulsed laser beam machining which has advantages for large area machining was applied and the machining methods that appropriate to the machining property of metals were proposed. In the case of stainless steel that has high viscosity and surface tension of its liquid state and that generates much dross and recast layer in laser beam machining process, dross and recast layer were piled for fabricating high aspect ratio micro-pin array. In the case of tungsten that is disadvantageous to precise machining using laser beam machining due to high melting point and high thermal conductivity, laser beam machining and electrochemical etching were used for fabricating micro-pin array. And the machining characteristics for each process were investigated according to machining parameters.
Fabricated micro-pin array was applied for interlocking on rough surface. The interlocking force was measured according to micro-pin shape and rough surface conditions. The principle of micro-pin array interlocking on rough surface was investigated. Calculated force using interlocking model was compared with measured force. And interlocking force was estimated using surface profile and developed interlocking model. To increase applicability of micro-pin array interlocking, tilted micro-pin array and flexible base micro-pin array were developed. Tilted micro-pin array could generate more and directional interlocking force. Flexible base micro-pin array could interlock on curved rough surface | - |
dc.description.tableofcontents | Abstract ...................................................................................................................i
Contents ................................................................................................................iii List of Figures ........................................................................................................v List of Tables ........................................................................................................xii 1. Introduction ......................................................................................................1 1.1 Research background ...................................................................................1 1.2 Research purpose and dissertation overview ................................................6 2. Fabrication of micro-pin array using recast layer piling ..............................9 2.1 Laser beam machining of stainless steel (AISI 304) ....................................9 2.2 Dross and recast layer piling ......................................................................11 2.3 System for laser beam machining ..............................................................15 2.4 Fabrication of micro-pin array on stainless steel ........................................18 3. Fabrication of micro-pin array using laser beam machining and electrochemical etching ..................................................................................42 3.1 Laser beam machining of tungsten .............................................................42 3.2 Asymmetric distribution of recast layer .....................................................46 3.3 System for laser beam machining and electrochemical etching .................49 3.4 Fabrication of micro-pin array on tungsten ................................................52 4. Interlocking of micro-pin array on rough surface ......................................71 4.2 Interlocking on rough surface .....................................................................71 4.2 Principle of the micro-pin array interlocking on rough surface .................78 4.3 Interlocking force according to micro-pin shape ........................................89 5. Applications on micro-pin array ...................................................................92 5.1 Fabrication and application of tilted micro-pin array .................................92 5.2 Fabrication and application of flexible base micro-pin array .....................99 6. Conclusion .....................................................................................................104 7. References .....................................................................................................107 국문초록 ............................................................................................................110 | - |
dc.format | application/pdf | - |
dc.format.extent | 2282201 bytes | - |
dc.format.medium | application/pdf | - |
dc.language.iso | en | - |
dc.publisher | 서울대학교 대학원 | - |
dc.subject | Metal micro-pin array | - |
dc.subject | Precise machining | - |
dc.subject | Laser beam machining | - |
dc.subject | Electrochemical machining | - |
dc.subject | Interlocking | - |
dc.subject | Rough surface | - |
dc.subject.ddc | 621 | - |
dc.title | Fabrication of Metal Micro-pin Array for Mechanical Interlocking on Rough Surface | - |
dc.title.alternative | 거친 표면에 인터로크를 위한 금속 미세 핀 배열의 가공 | - |
dc.type | Thesis | - |
dc.description.degree | Doctor | - |
dc.citation.pages | 112 | - |
dc.contributor.affiliation | 공과대학 기계항공공학부 | - |
dc.date.awarded | 2014-02 | - |
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