554 research outputs found

    The political role of the people's liberation army 1949-1973

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    This thesis is to study the political role of the People's Liberation Army from the approach of structure and function. The framework of the thesis consists of three major parts, first, the influence of Chinese traditional political culture on, and the formation of, the political role of the PL A; second, the influence of domestic political struggles and external military conflicts on the development of the political role of the PLA; and the third, the analysis of the transition of the PLA's political role from the structure and personnel arrangements of the CCPCC Within the above-mentioned three scopes, this thesis make a thorough discussion on the following: (1) The relationship between the structure of the PRC and the formation of the PLA's political role; (2) How has ideology influenced the army's political role; (3) What is Mao's viewpoint and his influence on the development of the army's political role; (4) What is the link between the army and the party, and how has this developed; (6) What accounts for the expansion of the PLA's political functions; (7) What is the influence of political factional struggles on the PLA's political role; (8) Is it political institution or military institution that controls the recruitment of the military elite; (9) What are the disparities between the military elite in handling international conflicts and what are their political considerations; (10) What is the Party's position in the army; (11) How have the Party’s important meetings and personnel arrangements influenced the rise and fall of the PLA's political role

    Failure analysis of mechanical and electrical components

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    This report focus is about failure analysis, introducing several techniques for metallurgical testing. This is to examine component and determine the clauses on the failure of these components. The experimented specimen, is being determined of its elemental component and as well as the stages it had underwent through several procedures of failure analysis. The importance of failure analysis is to prevent failure occurrence and to improve the functionality of the components.Bachelor of Engineering (Mechanical Engineering

    Investigation on in vitro biodegradation behaviours of Mg-based metallic glass

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    The global world is facing aging population and this ignites the interest for medical advances to keep up with the ageing society. Current technology requires removal of the bio-devices after they have finished serving their function. This step can be eliminated if the implants can disintegrate in the human body after sometime. Mg alloys have been tentatively designed as biodegradable implants for hard tissue repair and for coronary stents. However, the fast degradation rate of Mg alloy in physiological environment has restricted their successful applications. Recently, the developments of Mg-based metallic glass provide a prospect alternative as biodegradable implants instead of crystalline Mg alloys.Bachelor of Engineering (Mechanical Engineering

    Processing of amorphous magnesium glasses

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    This report serves as a documentation of the work and research that the student has accomplished for her final year project on the processing and characterization of designed crystalline/amorphous magnesium alloys. Magnesium-based alloys have unique properties which make it highly desired for applications in the aerospace, automotive and electronic industries. The prime objective of this project is to design and build an injection caster to fabricate and process designed crystalline/amorphous magnesium alloys, followed by the characterization and mechanical testings that will be conducted on the casted alloy. Rapid cooling rate of the copper chill promotes and produces amorphous structures. Design considerations were evaluated and the most feasible method to cast MgCaZn alloys into rods is via injection casting. Modifications to the injection casting unit was made to further improve the casting process.Bachelor of Engineering (Mechanical Engineering

    Report on industrial orientation with CPG Consultants Pte Ltd

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    CPG Consultants Pte Ltd (CPG Consultants) is a subsidiary of CPG Corp that provides consultancy services. In its Mechanical & Electrical (M&E) Division, CPG Consultants offers comprehensive design of M&E Engineering systems that are intelligent, energy-efficient, environmentally friendly and sustainable. With areas of focus on Air-Conditioning and Mechanical Ventilation, Fire Protection System and Plumbing and Sanitary during his internship, Jun Khiang sought to understand the industry better and the design constraints of building services with reference to the Green Mark requirements. He was also tasked with assisting a senior engineer and the Mechanical team in several major and minor projects

    Hybrid superplastic forming of magnesium alloys

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    Superplastic forming has been a useful process applied in the manufacture of complex components in the automotive and aerospace industries with high degree of precision. However, this technology requires expensive materials with fine grain sizes and high temperature conditions with slow forming rates. A hybrid forming technique has been designed with the combination of deep drawing (hot drawing) followed by superplastic forming to achieve a faster forming speed. This report would investigate the formability of non-superplastic grade magnesium alloy AZ31B through series of tensile tests under controlled temperatures and strain rates. Additionally, tests of the new hybrid superplastic forming was also conducted using non-superplastic grade AZ31B blanks. The tensile test results show that strain rates of 1E-3 or above will limit the effects of temperature on ductility. It is likely that high strain rates hinder the recrystallization process. Hybrid superplastic forming technique combines the mechanical preforming process with superplastic forming, creating a hybrid process that forms a component faster while retaining the advantages of superplastic forming to form complex parts. A component can be formed in about 30 minutes. Thickness profiling of the components were done to understand its formability microstructural study was also performed to identify the effects of hybrid superplastic forming on the material.Bachelor of Engineering (Aerospace Engineering
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