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 66 for “"Tool Wear"”.
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Tool wear in titanium machining
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981.
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An analytical approach to tool wear prediction
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1979.
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Local tool wear profiles prediction using physics-based models
Thesis (Ph. D.)--Michigan State University. Mechanical Engineering, 2009
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A study of tool wear measurement by using image processing system
<p>Cutting tools in a manufacturing system play a significant role in metal cutting process. Cutting tools arc consumable. Tool wear affects the outcomes of machining processes such as machined· surface quality and it is normally used as an indicating parameter for tool life. It is crucial to …
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An investigation of the diamond impression method for measuring tool wear
Thesis (B.S.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1952.
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An investigation into tool-wear and phenomena influencing tool-life in milling
The subjects of tool-life, tool-wear and machinability have attracted extensive research interest most of which have been directed toward turning operations. The added complexity of milling operations, resulting from both the discontinuous nature of the process and the varying chip thickness during …
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An analytical tool wear model for drilling of continuous fibre reinforced composites
… during aircraft manufacture and high rates of tool wear are experienced in commercial practice. Unmonitored tool wear can lead to increased cutting forces, heighted cutting temperatures, and subsequently, delamination, fibre pull out or thermal degradation of the polymer matrix. Understanding …
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A Tool Wear Comparative Study in Turning Versus Computer Simulation in 1018 Steel
<p>The material removal process uses cutting tools in order to produce the desired shape of the workpiece. Tool wear has been a problem for cutting tools, since cutting tools wear and break. Research has been accomplished in the tool wear field for tool life and more recently tool wear. The …
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Tool wear monitoring in turning using fused data sets of calibrated acoustic emission and vibration
… aim of this research is to develop an on-line tool wear condition monitoring intelligent system for single-point turning operations. This is to provide accurate and reliable information on the different states of tool wear. Calibrated acoustic emission and vibration techniques were implemented …
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Design and characterization of a smart bit for in-situ force measurement, using capacitive load cells and acoustic spectra analysis to determine rock type and tool wear in rock excavation process
… This work investigates methods for determining tool wear and material type with a sensing system, which would enable operators to make decisions using objective feedback from a safer location. Continuous mining machine operators must determine tool wear and material type during operation, and …
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Machinability study of particle reinforced aluminium metal matrix composites
… with constant depth of cut of 0.5 mm. The main wear mechanism of machining these Al MMC materials is abrasion by the reinforcing particles and the primary type of tool wear is flank wear. Linear regression techniques has been used to derive Taylor equations to describe the tool performance. The …
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eyeDNA : Tool Condition Monitoring for a desktop CNC milling machine
Tool wear is a major obstacle to realizing full automation in metal cutting operations. In this thesis, we designed and implemented a low cost Tool Condition Monitoring (TCM) system using off-the-shelf sensors and data acquisition methods . Peripheral end milling tests were done on a low carbon …
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Machinability Study on Silicon Carbide Particle-Reinforced Aluminum Alloy Composite with CVD Diamond Coated Tools
… particles (AlSiC) require special cutting tools due to the high hardness and abrasive properties of the ceramic particles. Diamond coated cutting tools are ideal for machining this type of pMMC. Previous research studies focus on the machinability of pMMCs with low ceramic content. The aim …
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The design of an effective sensor fusion model for condition monitoring systems of turning processes
… model for turning processes for the detection of tool wear. Multi-sensors combined with a novelty detection algorithm and Learning Vector Quantisation (LVQ) neural networks are used in this research to detect tool wear and provide diagnostic and prognostic information. A novel approach, termed …
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Cutting tool condition monitoring of the turning process using artificial intelligence
… to the application of Artificial Intelligence to tool wear monitoring. The main objective is to develop an intelligent condition monitoring system able to detect when a cutting tool is worn out. To accomplish this objective it is proposed to use a combined Expert System and Neural Network able to …
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Study of Pulse Electrochemical Micromachining using Cryogenically Treated Tungsten Microtools
… and metal matrix composites. Absence of tool wear is a major advantage expected of PECMM. However, tools are often chemically corroded by certain electrolytes used in PECMM. In this thesis a novel approach i.e. cryogenic treatment of in-house made microtools has been studied to …
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Multivariate tool condition monitoring in a metal cutting operation using neural networks
… of an investigative study to develop a modular Tool Condition Monitoring System (TCMS) for metal cutting operations (turning in particular) through the application of multivariate process parameters and perceptron neural networks. The initial phase of the work was concerned with a literature …
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Mathematical modelling and in-process monitoring techniques for cutting tools.
… mathematical models which describe the cutting tool-workpiece interaction and for accurate on-line monitoring of tool-state. These are essential requirements for the achievement of unmanned and computerized machining processes. Techniques are used to design the experiments which substantially …
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The use of variable spindle speed for vibration control in face milling process
… influenced by vibrations: e.g., surface finish, tool wear, and cutting force characteristics. Vibrations result in a poor surface finish of the machined workpiece, reduce the life of the cutter, accelerate machine tool system component wear, and may lead to an unacceptable noise level in the work …
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