Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 43 for “"machinability"”.
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The machinability of a gamma titanium aluminide intermetallic
The work reported details the machinability of the gamma titanium aluminide intermetallic (-TiAl) Ti-45Al-8Nb-0.2C currently under evaluation to be the material of choice for blades and stators in the intermediate compressor (IP) and low pressure (LP) turbine sections of an aeroengine due to the …
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Comparative Analysis of the Machinability of Various Titanium Alloys
… it is used is most titanium applications. The machinability of titanium alloys varies depending on the method the titanium alloy was manufactured. There is a lack of knowledge for drilling additive manufactured titanium and powdered metallurgy titanium. This study will investigate and compare …
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The development of a standard drilling test for machinability
… and development of a standard drilling test for machinability which would employ the modified machine. The first mission was accomplished by the substitution of a specimen-holder in the form of an angle iron for the tool holder already attached to the carriage. One other modification consisted of …
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Machinability study of particle reinforced aluminium metal matrix composites
In this thesis, machinability of particle-reinforced aluminium metal matrix composites, Comral-85 and DURALCANTM, has been studied. Continuous turning of round composite bars, using polycrystalline diamond (PCD) inserts has been selected as the test method. The test conditions included cutting …
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The development of a testing machine for machinability tests
… by other investigators in the field of machinability was the factor of time. The question was, “Could a machine be built which was capable of measuring the differences in materials in terms of the variation in the times required to remove metal under a given set of conditions?” The first …
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Expert system for machinability data integrated with a CAD system
This work defines an expert machinability data system integrated with a CAD system, for computing complete machining parameters required for further processing with NC software. The main objective is to move toward the concept of a fully computerized system, from design to the generation of NC code …
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Fundamental Study of the Machinability of Carbon Nanotube Reinforced Polymer Composites
Alignment of CNTs in the polymer matrix is important from a material property improvement stand point. Therefore, a microstructure-based finite element machining model was used to study the effect of CNT orientation on the machining responses. The predicted machining responses for aligned CNT …
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Investigation of Machinability and Dust Emissions in Edge Trimming of Laminated Carbon Fiber Composites
The use of carbon fiber reinforced plastic (CFRP) systems for product structures has been steadily increasing because of superior material properties, including high strength, low weight, and corrosion resistance. CFRP parts may be molded to near net-shape geometry; however, machining operations …
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Machinability Study on Silicon Carbide Particle-Reinforced Aluminum Alloy Composite with CVD Diamond Coated Tools
… of pMMC. Previous research studies focus on the machinability of pMMCs with low ceramic content. The aim of this research is to determine the optimal cutting parameters for machining AlSiC material containing high silicon carbide particle reinforcement (>25%). The optimal cutting parameters are …
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Improvement of machinability and surface integrity during electro discharge machining of inconel 718 using nano powder suspension dielectric
… compared to the base material. In the case of machinability, Cu electrode is the best option in EDM machining of Inconel 718.
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Drilling of carbon fibre reinforced plastic composites
… an extensive literature survey focusing on the machinability of carbon fibre reinforced plastics (CFRP), three main phases of experimental work were undertaken to evaluate the drilling of CFRP and associated stack materials. Phase 1 and 2 involved small diameter holes (1.5 mm) in thin CFRP …
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Effects of milling methods, cooling strategies and end-mill coatings on machinability in high speed end-milling of Inconel- 718 using carbide end-mills
… end-milling of Inconel-718 to improve its machinability and reduce cost. Firstly, a comparative investigation of milling methods and cooling strategies using uncoated tools was conducted and analyzed to find better milling method and three best cooling strategies to perform further …
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MODELLING AND SIMULATION MICROMACHINING OF THE ADDITIVELY MANUFACTURED METAL PARTS
… and machining process parameters on the machinability and surface roughness of additively manufactured metal is analyzed through modelling, simulation, and experiments. Frameworks of this thesis include four core parts: quasi-static compressive mechanical response and split-Hopkinson …
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SUSTAINABLE FACE MILLING OF INCONEL 718 USING MQL AND NANOFLUIDS MQL WITH VEGETABLE OIL AS BASE FLUID
… aerospace and nuclear industries leading to poor machinability (high cutting forces, rapid tool wear, shorter tool life, and poor surface integrity). Conventional flood coolant (CEC) used in industry is environmentally unfriendly, hazardous to operators, and unsustainable. These problems motivated …
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Casting a one-lunger Atlantic marine engine
… terminology in addition to theory of sand types, machinability, engine cycles, and ignition systems. In depth descriptions of basic and advanced casting processes using the ignitor body and piston as examples.
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Processing and characterization of ceramic superconductor/polymer composites
… compared on the basis of mechanical performance, machinability, environmental resistance, diamagnetic strength, electrical resistance, and shielding effectiveness. If the superconductor/polymer 0-3 composites are processed well, they have improved mechanical performance, machinability, and …
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Evaluation of the atomization-based cutting fluid spray system in milling of titanium alloy
… Ti-6Al-4V, leading to significant improvement in machinability of titanium alloys. However, the efficacy of the ACF spray system is yet to be tested for other machining operations that are different from turning, like milling. The droplet impingement dynamics in milling are different than that in …
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Electrical, Thermal, and Machining Behaviour of Injection Moulded Polymeric CNT Nanocomposites
… moulded CNT nanocomposites, such as their machinability, plays an important role in their economic viability. The addition of CNTs to polymers can improve the machinability of the polymers, mostly due to the high thermal conductivity of these nano particulates. However, there are some …
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