Chong, Kam Cheong. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1998. / Includes bibliographical references. / Text in English; abstract also in Chinese. / Chong, Kam Cheong. / ACKNOWLEDGMENT --- p.i / ABSTRACT --- p.ii / 摘要 --- p.iv / Table of contents --- p.v / Chapter 1 --- Introduction / Chapter 1.1 --- Metal Matrix Composites / Chapter 1.1.1 --- Background --- p.1-1 / Chapter 1.1.2 --- Some metallic matrix materials --- p.1-2 / Chapter 1.1.2.1 --- Aluminum alloys --- p.1-2 / Chapter 1.1.2.2 --- Titanium alloys --- p.1-3 / Chapter 1.1.3 --- Different kinds of reinforcements --- p.1-3 / Chapter 1.2 --- Conventional fabrication Methods --- p.1-5 / Chapter 1.2.1 --- Primary liquid phase processing --- p.1-5 / Chapter 1.2.1.1 --- Squeeze casting --- p.1-5 / Chapter 1.2.1.2 --- Spray deposition --- p.1-5 / Chapter 1.2.1.3 --- Slurry casting --- p.1-5 / Chapter 1.2.1.4 --- In Situ processing --- p.1-6 / Chapter 1.2.2 --- Primary solid state processing --- p.1-6 / Chapter 1.2.2.1 --- Physical vapour deposition (PVD) --- p.1-6 / Chapter 1.2.2.2 --- Powder blending and sintering --- p.1-7 / Figures for chapter 1 --- p.1-9 / Tables for chapter 1 --- p.1-14 / References --- p.1-15 / Chapter 2 --- Powder metallurgy --- p.2-1 / Chapter 2.1 --- Introduction --- p.2-1 / Chapter 2.2 --- Fabrication of metal matrix-particulate composites --- p.2-2 / Chapter 2.3 --- Our motivation --- p.2-4 / Figures for chapter 2 --- p.2-5 / References --- p.2-7 / Chapter 3 --- Effects of sintering in processing of metal matrix composites --- p.3-1 / Chapter 3.1 --- Introduction of sintering processing --- p.3-1 / Chapter 3.1.1 --- Solid state sintering --- p.3-2 / Chapter 3.1.2 --- Liquid state sintering --- p.3-5 / Chapter 3.1.3 --- Sintering in metal matrix composites(reactive sintering) --- p.3-7 / Figures for chapter 3 --- p.3-11 / Reference --- p.3-14 / Chapter 4 --- Experiments --- p.4-1 / Chapter 4.1 --- Introduction --- p.4-1 / Chapter 4.2 --- Methodology --- p.4-3 / Chapter 4.2.1 --- High temperature furnace experiment --- p.4.3 / Chapter 4.2.2 --- Arc-melting furnace experiment --- p.4-4 / Chapter 4.3 --- Sample preparations --- p.4-4 / Chapter 4.3.1 --- Sample requirements --- p.4-4 / Chapter 4.3.2 --- Sample milling --- p.4-6 / Chapter 4.3.3 --- Cold pressing --- p.4-6 / Chapter 4.3.4 --- Annealing conditions for high-temperature furnace --- p.4-7 / Chapter 4.3.4.1 --- Different sintering temperatures --- p.4-7 / Chapter 4.3.4.2 --- Different sintering duration --- p.4-8 / Chapter 4.3.5 --- Sample conditions in arc-melting furnace --- p.4-8 / Chapter 4.4 --- Instrumentation --- p.4-10 / Chapter 4.4.1 --- Arc-melting furnace --- p.4-10 / Chapter 4.4.2 --- Vickers hardness tester --- p.4-11 / Chapter 4.4.3 --- X-Ray powder diffractometer (XPD) --- p.4-13 / Chapter 4.4.4 --- Scanning electron microscopy & energy dispersive x-ray analysis --- p.4-15 / References --- p.4-18 / Chapter 5 --- Results / Chapter 5.1 --- High-temperature furnace --- p.5-1 / Chapter 5.1.1 --- XPD results --- p.5-1 / Chapter 5.1.2 --- Different sintering temperatures in 10 weight percent of Cr203 - A1 samples with 1 hour sintering time --- p.5-2 / Chapter 5.1.3 --- Different sintering temperatures in 15 weight percent of Cr203 一 A1 samples with 1 hour sintering time --- p.5-6 / Chapter 5.1.4 --- Different sintering temperatures in 20 weight percent of Cr203 ´ؤ A1 samples with 1 hour sintering time --- p.5-10 / Chapter 5.1.5 --- Different sintering temperatures in 30 weight percent of Cr203 ´ؤ A1 samples with 1 hour sintering time --- p.5-13 / Chapter 5.1.6 --- Different sintering time for 10 weight percent of Cr203 ´ؤ A1 samples at 1100°C sintering temperature --- p.5-19 / Chapter 5.1.7 --- Different sintering time for 15 weight percent of Cr203 ´ؤ A1 samples at 1100°C sintering temperature --- p.5-21 / Chapter 5.2 --- Arc-melting furnace --- p.5-24 / Chapter 5.2.1 --- XPD results --- p.5-24 / Chapter 5.2.2 --- Samples that were melted in arc-melting furnace --- p.5-25 / Chapter 5.2.3 --- Powder samples that were melted in arc-melting furnace --- p.5-28 / Figures for chapter 5 --- p.5-30 / References --- p.5-55 / Chapter 6 --- Discussions --- p.6-1 / Chapter 6.1 --- Chemical reactions --- p.6-1 / Chapter 6.2 --- Sintering --- p.6-6 / Chapter 6.2.1 --- Conditions for having larger Al13Cr2 intermetallic compound --- p.5-7 / Chapter 6.3 --- Vickers hardness results --- p.6-10 / Chapter 6.4 --- Comparisons between the two furnace results --- p.6-12 / Chapter 6.4.1 --- Cooling rates --- p.6-12 / Chapter 6.4.2 --- Volume fraction of all the intermetallic compounds --- p.6-14 / Chapter 6.4.3 --- Pore sizes --- p.6-15 / Chapter 6.4.4 --- Vickers hardness --- p.6-16 / References --- p.6-17 / Chapter 7 --- Conclusions and suggestions for further studies --- p.7-1 / BIBLIOGRAPHY

Fong King Yan = 光栅衍射及含週期結構的金屬片的透射增強效應的理論研究 / 方敬恩. / Thesis submitted in: September 2006. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2007. / Includes bibliographical references (leaves 111-119). / Abstracts in English and Chinese. / Fong King Yan = Guang zha yan she ji han zhou qi jie gou de jin shu pian de tou she zeng qiang xiao ying de li lun yan jiu / Fang Jing'en. / Chapter 1 --- Introduction --- p.1 / Chapter 2 --- Review on Grating Theories --- p.6 / Chapter 2.1 --- Basic Concepts --- p.6 / Chapter 2.1.1 --- Maxwell's Equations --- p.6 / Chapter 2.1.2 --- Translational Symmetry --- p.8 / Chapter 2.1.3 --- TM and TE Polarizations --- p.10 / Chapter 2.1.4 --- The Grating Equation --- p.11 / Chapter 2.2 --- Rayleigh's Method --- p.12 / Chapter 2.3 --- Integral Method --- p.13 / Chapter 2.4 --- Classical Modal Method --- p.15 / Chapter 2.5 --- Rigorous Coupled-Wave Analysis --- p.16 / Chapter 2.5.1 --- General Form of Electromagnetic Modes --- p.17 / Chapter 2.5.2 --- Fourier Factorization Rules --- p.20 / Chapter 2.5.3 --- Matching Boundary Conditions --- p.21 / Chapter 2.5.4 --- Multilayered Gratings and Staircase Approximation --- p.25 / Chapter 2.5.5 --- Model Calculations --- p.25 / Chapter 2.6 --- Anisotropic Gratings --- p.26 / Chapter 2.6.1 --- General Form of Electromagnetic Modes --- p.29 / Chapter 2.6.2 --- Matching Boundary Conditions --- p.30 / Chapter 2.6.3 --- Model Calculations --- p.31 / Chapter 3 --- Grating Diffraction by Linear Superposition of Retarded Field --- p.33 / Chapter 3.1 --- Basic Ideas --- p.33 / Chapter 3.2 --- Formalism --- p.35 / Chapter 3.2.1 --- Field Induced Currents --- p.36 / Chapter 3.2.2 --- Field due to Current and Charge Densities --- p.38 / Chapter 3.2.3 --- "Internal, Transmitted, and Reflected Fields" --- p.39 / Chapter 3.2.4 --- Points of Physical Interest --- p.41 / Chapter 3.3 --- Model Calculations --- p.43 / Chapter 3.4 --- Application to Systems with Anisotropy or Nonlinearity --- p.46 / Chapter 3.5 --- Summary --- p.52 / Chapter 4 --- Introduction to Surface Plasmonic Excitations and Phenomenon of Enhanced Transmission --- p.55 / Chapter 4.1 --- Introduction to Surface Plasmons --- p.55 / Chapter 4.2 --- Phenomenon of Enhanced Transmission --- p.60 / Chapter 5 --- Enhanced Transmission Through Stacking Grating with Subwavelength Slits --- p.72 / Chapter 6 --- Controlling Enhanced Transmissions via Anisotropic Effects --- p.81 / Chapter 6.1 --- Effects of Anisotropic Waveguide on The Phenomenon of Enhanced Transmission --- p.82 / Chapter 6.1.1 --- Control of Enhanced Transmission by Anisotropic Waveguide --- p.83 / Chapter 6.1.2 --- Electromagnetic Modes in Anisotropic Waveguide --- p.87 / Chapter 6.1.3 --- Single Mode Model for Studying Transmission of Grating with Slits Filled with Anisotropic Material --- p.89 / Chapter 6.2 --- Effects of Strong Applied Magnetic Field on the Phenomenon of Enhanced Transmission --- p.95 / Chapter 6.2.1 --- Magnetic Field Induced Anisotropy in Metals --- p.95 / Chapter 6.2.2 --- Enhanced Transmission under Influence of Strong Magnetic Field --- p.97 / Chapter 6.2.3 --- Modification of Surface Plasmon Dispersion relation by Strong Applied Magnetic Field --- p.101 / Chapter 7 --- Conclusion --- p.107 / Bibliography --- p.111 / Chapter A --- Fourier Factorization Rules --- p.120 / Chapter A.l --- Notations --- p.120 / Chapter A.2 --- Factorization rules [28] --- p.121 / Chapter A.3 --- Fourier Factorization of Quantities in Anisotropic medium [32] --- p.122 / Chapter B --- Derivation of Integral in Eq. (3.10) --- p.124

Reducing the amount of metal used within a timber structure has many advantages, particularly when dealing with connections. Fire resistance and durability are commonly cited benefits. In addition the use of alternative connector materials minimises thermal bridging and can also provide a lighter weight structural solution. Existing contemporary forms of non-metallic timber connections are commonly provided through the use of adhesives. However, these connections are reliant on a need for careful offsite, prefabricated construction. Traditional green oak carpentry connections provide a mechanically fastened non-metallic solution. However, carpentry connections are not widely compatible with contemporary architectural design or with the use of modern engineered timber products such as glulam. Building upon research completed at the University of Bath, the aim of this thesis was to develop a mechanical, non-metallic connection system suitable for contemporary applications. Specific objectives were to investigate the structural performance of a defined connection system and to develop analysis methods to facilitate design. A review of the literature demonstrated a lack of uptake and use of mechanical non-metallic connections. Guidance for the design of mechanical fasteners reflects the lack of innovation and research into the use of non-metallic materials. Following an initial experimental investigation of non-metallic materials, an experimental testing programme was completed to investigate the use of glass fibre reinforced plastic (GFRP) dowels in conjunction with densified veneer wood (DVW) plates. The findings of the experimental study demonstrate that the use of these materials can provide a robust connection system for contemporary applications. The results of the experimental work provide guidance on dowel spacing requirements, connection response to load and connection failure modes. The failure modes of the proposed connection system were shown to be unique to the materials used and specific strength analysis methods have been developed to predict connection yield and ultimate strength. A method for predicting initial connection stiffness was also developed through the use of a beam on elastic foundation model.

No description available.

Choi Ching Yeung = 鎂和氧化銀粉反應制備鎂基復合材料 / 蔡靜洋. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references. / Text in English; abstracts in English and Chinese. / Choi Ching-Yeung = Mei he yang hua yin fen fan ying zhi bei mei ji fu he cai liao / Cai Jingyang. / Abstract --- p.i / 摘要 --- p.iii / Acknowledgement --- p.iv / List of Figures --- p.xi / List of Tables --- p.xvi / Chapter Chapter 1 --- Introduction --- p.1.1 / Chapter 1.1 --- Metal matrix composites (MMCs) --- p.1.1 / Chapter 1.1.1 --- Introduction --- p.1.1 / Chapter 1.1.2 --- Reinforcement in metal-matrix composites --- p.1.1 / Chapter 1.1.2.1 --- Particle-reinforced composites --- p.1.2 / Chapter 1.1.2.2 --- Laminated composites --- p.1.2 / Chapter 1.1.2.3 --- Fibre-reinforced composites --- p.1.2 / Chapter 1.1.3 --- Conventional fabrication of metal matrix composites --- p.1.6 / Chapter 1.1.3.1 --- Liquid state processes --- p.1.6 / Chapter 1.1.3.1.1 --- Liquid infiltration --- p.1.6 / Chapter 1.1.3.1.2 --- Pressure infiltration --- p.1.8 / Chapter 1.1.3.1.3 --- Spray forming --- p.1.10 / Chapter 1.1.3.2 --- Solid-state process --- p.1.11 / Chapter 1.1.3.2.1 --- Powder consolidation --- p.1.11 / Chapter 1.1.3.2.2 --- Diffusion bonding --- p.1.11 / Chapter 1.1.3.2.3 --- In-Situ processes --- p.1.13 / Chapter 1.1.4 --- Properties of metal matrix composites --- p.1.13 / Chapter 1.2 --- Magnesium based metal matrix composites --- p.1.14 / Chapter 1.2.1 --- Properties of Mg-based metal matrix composites --- p.1.14 / Chapter 1.2.2 --- Application of Mg-based metal matrix composites --- p.1.16 / Chapter 1.3 --- Magnesium and silver (I) oxide --- p.1.16 / Chapter 1.3.1 --- Magnesium --- p.1.16 / Chapter 1.3.2 --- Silver (I) oxide --- p.1.17 / Chapter 1.4 --- Pervious works --- p.1.17 / Chapter 1.5 --- Aims of Current works --- p.1.18 / Chapter 1.6 --- Thesis layout --- p.1.20 / References --- p.1.21 / Chapter Chapter 2 --- Methodology and fabrication --- p.2.1 / Chapter 2.1 --- Introduction --- p.2.1 / Chapter 2.1.1 --- Powder metallurgy --- p.2.1 / Chapter 2.1.1.1 --- Powder production --- p.2.3 / Chapter 2.1.1.2 --- Powder consolidation --- p.2.4 / Chapter 2.1.1.3 --- Sintering process --- p.2.6 / Chapter 2.1.1.4 --- Properties of sintered parts --- p.2.10 / Chapter 2.2 --- Sample preparation --- p.2.12 / Chapter 2.3 --- Characterization methods --- p.2.13 / Chapter 2.3.1 --- Thermal analysis - Differential Thermal Analysis (DTA) --- p.2.13 / Chapter 2.3.2 --- Phase determination - X-ray Powder Diffractometry (XRD) --- p.2.13 / Chapter 2.3.3 --- Microstructure analysis --- p.2.14 / Chapter 2.3.3.1 --- Scanning electron microscopy (SEM) --- p.2.14 / Chapter 2.3.3.1 --- Transmission electron microscopy (TEM and HRTEM) --- p.2.14 / Chapter 2.3.4 --- Physical property - Thermomechanic analyser (TMA) --- p.2.14 / Chapter 2.3.5 --- Mechanical property - Vickers hardness measurement --- p.2.15 / References --- p.2.16 / Chapter Chapter 3 --- Thermal analysis of Mg-Ag20 --- p.3.1 / Chapter 3.1 --- Introduction --- p.3.1 / Chapter 3.2 --- Experiments --- p.3.2 / Chapter 3.3 --- Results --- p.3.2 / Chapter 3.3.1 --- DTA curve of the Mg-30wt%Ag20 --- p.3.5 / Chapter 3.3.2 --- DTA curve of the pure Ag20 powder --- p.3.7 / Chapter 3.4 --- Discussions --- p.3.7 / Chapter 3.5 --- Conclusions --- p.3.10 / References --- p.3.11 / Chapter Chapter 4 --- Fabrication and characterization of Mg-£-AgMg3 MMCs --- p.4.1 / Chapter 4.1 --- Introduction --- p.4.1 / Chapter 4.2 --- Experiments --- p.4.2 / Chapter 4.2.1 --- Sample preparation --- p.4.2 / Chapter 4.2.1.1 --- Effect of temperature --- p.4.2 / Chapter 4.2.1.2 --- Effect of time --- p.4.3 / Chapter 4.2.1.3 --- Effect of composition --- p.4.3 / Chapter 4.2.1.4 --- Effect of cooling rate --- p.4.3 / Chapter 4.3 --- Results --- p.4.4 / Chapter 4.3.1 --- Samples sintered at different temperatures --- p.4.4 / Chapter 4.3.1.1 --- XRD spectra --- p.4.4 / Chapter 4.3.1.2 --- SEM micrographs and EDS analysis --- p.4.7 / Chapter 4.3.1.3 --- Discussions --- p.4.11 / Chapter 4.3.2 --- Sample with different dwelling times --- p.4.13 / Chapter 4.3.2.1 --- SEM micrographs --- p.4.13 / Chapter 4.3.2.2 --- Weight loss against dwelling time --- p.4.16 / Chapter 4.3.2.3 --- Discussions --- p.4.18 / Chapter 4.3.3 --- Samples with varied weight percentage of Ag2O --- p.4.19 / Chapter 4.3.3.1 --- SEM micrographs --- p.4.19 / Chapter 4.3.3.2 --- Discussions --- p.4.22 / Chapter 4.3.4 --- Samples with different cooling rate --- p.4.23 / Chapter 4.3.4.1 --- XRD patterns --- p.4.23 / Chapter 4.3.4.2 --- Optical photographs --- p.4.25 / Chapter 4.3.4.3 --- SEM micrographs --- p.4.28 / Chapter 4.3.4.4 --- TEM micrographs and high-resolution TEM micrographs…… --- p.4.31 / Chapter 4.3.4.5 --- Discussions --- p.4.35 / Chapter 4.3.4.5.1 --- XRD spectra --- p.4.35 / Chapter 4.3.4.5.2 --- Optical photographs --- p.4.35 / Chapter 4.3.4.5.3 --- SEM micrographs --- p.4.35 / Chapter 4.3.4.5.4 --- TEM micrographs --- p.4.36 / Chapter 4.4 --- Conclusions --- p.4.37 / References --- p.4.38 / Chapter Chapter 5 --- Mechanical hardness and thermal expansion of Mg-Ag20 --- p.5.1 / Chapter 5.1 --- Introduction --- p.5.1 / Chapter 5.2 --- Mechanical properties --- p.5.1 / Chapter 5.2.1 --- Experiments --- p.5.1 / Chapter 5.2.2 --- Results --- p.5.2 / Chapter 5.2.3 --- Discussions --- p.5.8 / Chapter 5.3 --- Thermal properties --- p.5.9 / Chapter 5.3.1 --- Experimental details --- p.5.9 / Chapter 5.3.2 --- Results --- p.5.10 / Chapter 5.3.3 --- Discussions --- p.5.12 / Chapter 5.4 --- Conclusions --- p.5.13 / References --- p.5.14 / Chapter Chapter 6 --- Conclusions and future works --- p.6.1 / Chapter 6.1 --- Conclusions --- p.6.1 / Chapter 6.2 --- Further works --- p.6.2

The viscosity of Zr[subscript 41.2]Ti[subscript 13.8]Cu[subscript 12.5]Ni[subscript 10.0]Be[subscript 22.5] (Vit1) has been measured above the liquidus temperature, T[subscript liq]=1026 K, using a high vacuum high temperature rapid annealing furnace equipped with a Couette Concentric Cylinder Rheometer. Steady state measurements have been taken over a temperature range of 1075-1300 K and a shear rate range of 10⁰-10² s⁻¹. It has previously been discovered that there exists a pronounced decrease in viscosity with increasing shear rate which is contrary to the general belief that metallic systems above the liquidus temperature should show Newtonian behavior due to high atomic mobility. This suggests that there is short or medium range order present in the liquid state that can be destroyed by shearing. This current study has discovered that this shear rate dependence of the viscosity of Vit1 decreases with increasing temperature and approaches the Newtonian behavior and viscosities of simple monatomic or binary liquid alloys at 1225 K. Once this state is reached the viscosity will remain Newtonian in the liquid state and no order is reformed until the sample is cooled into the supercooled region. This indicates a strong temperature history dependence of the viscosity. It has also been discovered that initially crystalline Vit1 has an order of magnitude lower viscosity than initially amorphous Vit1 at 1075 K after melting. This difference decreases with increasing temperature until similar viscosities are obtained at 1175 K. The Vogel-Fulcher-Tammann relationship shows decreasing fragility of Vit1 with increasing shear rate and increasing temperature. It was also seen that temperature has a larger and more permanent effect on the fragility than shear rate. The development and results of converting viscosity data to configurational entropy using the Adam-Gibbs entropy model for viscous flow are discussed. This shows that the configurational entropy present after melting is on the order of the entropy of fusion. / Graduation date: 2006

Thèse : Sciences physiques : Paris, Faculté des sciences : 1880. / Titre provenant de l'écran-titre.

Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains viii, 89 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 79-80).

Thesis (M.S.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains xii, 79 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 78-79).

Thesis (M. Phil.)--University of Hong Kong, 1974. / 'Discussion of points raised in the oral examination' inserted: after p.73.