Hui Fong-fong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2000. / Includes bibliographical references (leaves 84-85). / Abstracts in English and Chinese. / Chapter 1 --- INTRODUCTION --- p.1 / Chapter 1.1 --- Objective --- p.1 / Chapter 1.2 --- Background --- p.1 / Chapter 1.3 --- Mechanism and History of SMA --- p.3 / Chapter 1.4 --- Organization of the thesis --- p.4 / Chapter 2 --- LITERATURY SURVEY --- p.6 / Chapter 2.1 --- Previous achievements in micro robot --- p.6 / Chapter 2.1.1 --- Micro-robot with mechanical devices --- p.6 / Chapter 2.1.2 --- Micro-robot with smart materials --- p.7 / Chapter 2.1.3 --- Micro-robot with micro actuators --- p.8 / Chapter 2.2 --- Previous work in improving the SMA wire response --- p.10 / Chapter 2.2.1 --- Fixed external cooling System --- p.10 / Chapter 2.2.2 --- Dynamic external cooling system --- p.12 / Chapter 2.2.3 --- Physical Conversion --- p.13 / Chapter 2.3 --- Summary of literature survey --- p.14 / Chapter 3 --- 3-DOF SMA MICRO ROBOT~AN APPLICATION FOR SMA ACTUATORS --- p.15 / Chapter 3.1 --- Robot conceptual design --- p.15 / Chapter 3.2 --- Structural analysis for the propulsion of robot --- p.17 / Chapter 3.3 --- Two-way shape memory effect --- p.18 / Chapter 3.4 --- Material Selection --- p.19 / Chapter 3.4.1 --- Nickel-Titanium Alloys --- p.19 / Chapter 3.4.2 --- Copper-based Alloys --- p.20 / Chapter 3.4.3 --- Comparison of Ni-Ti and Copper-based alloys --- p.20 / Chapter 3.5 --- Fabrication process of micro robot --- p.21 / Chapter 3.5.1 --- Setting the shape of Nitinol wires --- p.22 / Chapter 3.5.2 --- Modifying the spring length --- p.23 / Chapter 3.5.3 --- Training for two-way memory --- p.24 / Chapter 3.5.3.1 --- Over deformation in Martensitic condition --- p.25 / Chapter 3.5.3.2 --- Trained by repeating Cycling --- p.25 / Chapter 3.5.3.3 --- Trained by Pseudoelastic Cycling --- p.26 / Chapter 3.5.3.4 --- Training by Constrained Temperature Cycling of Deformed Martensite --- p.26 / Chapter 3.5.4 --- Fabrication of Body part --- p.26 / Chapter 3.6 --- Locomotion methods --- p.28 / Chapter 3.7 --- Bending control --- p.29 / Chapter 4 --- HEAT TRANSFER ENHANCEMENT BY INCREASING CONVECTIVE SURFACE AREA --- p.31 / Chapter 4.1 --- Heat transfer --- p.31 / Chapter 4.2 --- Simplified Heat Transfer Analysis --- p.32 / Chapter 4.2.1 --- Analysis of Theoretical Results --- p.36 / Chapter 4.3 --- Verifying the reliability --- p.38 / Chapter 4.4 --- Mathematical Model to Match Experimental Conditions --- p.39 / Chapter 4.4.1 --- Mathematical modification by considering the connector --- p.39 / Chapter 4.4.2 --- Matching by introducing the correction factor --- p.40 / Chapter 4.5 --- Experimental model and modification of parameters --- p.41 / Chapter 5 --- LASER-MICROMACHINING --- p.44 / Chapter 5.1 --- Laser micro-fabrication of micro grooves on SMA wires --- p.44 / Chapter 5.2 --- Background on Laser-micromachining --- p.45 / Chapter 5.3 --- Basic Mechanisms in Lasers --- p.46 / Chapter 5.4 --- System Description --- p.47 / Chapter 5.5 --- Laser characteristic and groove fabrication --- p.48 / Chapter 5.5.1 --- Focal Spot Size --- p.48 / Chapter 5.5.2 --- Beam-focusing conditions --- p.49 / Chapter 5.6 --- Grooves measurement --- p.54 / Chapter 5.6.1 --- WYKO measurement --- p.54 / Chapter 5.6.2 --- SEM estimation --- p.57 / Chapter 6 --- EXPERIMENTAL RESULTS --- p.58 / Chapter 6.1 --- Experimental Setup for Temperature Measurement --- p.58 / Chapter 6.2 --- Experimental and Theoretical Comparison --- p.59 / Chapter 6.2.1 --- Improved Performance of lasered SMA wires --- p.59 / Chapter 6.2.2 --- Comparison of Experimental and Theoretical Results --- p.60 / Chapter 6.3 --- Effect of Micro-grooves on SMA Force Output --- p.63 / Chapter 6.3.1 --- Force Measurement Setup --- p.64 / Chapter 7 --- OPTIMUM PARAMETERS FOR HEAT TRANSFER --- p.66 / Chapter 7.1 --- Assumptions --- p.66 / Chapter 7.2 --- Mathematical Formulation --- p.66 / Chapter 7.2.1 --- Width of groove --- p.67 / Chapter 7.2.2 --- Depth of groove --- p.70 / Chapter 7.2.3 --- Number of groove --- p.72 / Chapter 7.3 --- Experimental Validation --- p.75 / Chapter 7.3.1 --- Repetition time and the depth of groove --- p.75 / Chapter 7.3.2 --- Validating the depth effect --- p.77 / Chapter 8 --- CONCLUSION --- p.80 / Chapter 9 --- FUTURE WORK --- p.81 / Chapter A. --- APPENDIX --- p.82 / Chapter A. 1 --- Procedures for quick WYKO surface profile measurements --- p.82 / BIBLIOGRAPHY --- p.84
| Identifer | oai:union.ndltd.org:cuhk.edu.hk/oai:cuhk-dr:cuhk_323133 |
| Date | January 2000 |
| Contributors | Hui, Fong-fong., Chinese University of Hong Kong Graduate School. Division of Mechanical and Automation Engineering. |
| Source Sets | The Chinese University of Hong Kong |
| Language | English, Chinese |
| Detected Language | English |
| Type | Text, bibliography |
| Format | print, xiii, 85 leaves : ill. ; 30 cm. |
| Rights | Use of this resource is governed by the terms and conditions of the Creative Commons “Attribution-NonCommercial-NoDerivatives 4.0 International” License (http://creativecommons.org/licenses/by-nc-nd/4.0/) |
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