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 311 for “"Operating parameters"”.
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Investigation of operating parameters in a vertical stirred mill
… need to be understood. This project investigated operating parameters against performance in a laboratory scale vertical stirred mill (Deswik mill), in an ultrafine grinding (UFG) application of MG2 reef in the bushveld igneous complex. The operating variables that were investigated are stirrer …
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Determining the Optimum Operating Parameters of a Unipolar PWM Inverter
… study presents a determination of the optimum operating parameters of a unipolar PWM inverter through theoretical and experimental analysis. The inverter is investigated in its simplest form without input DC-DC conversion or output filtering. The intent of this study is to understand the core …
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Discharge Pumped Iodine Monofluoride Laser: Operating Parameters and Collisional Kinetics
Lasing has been observed at five different wavelengths ranging from 472 to 497 nm from discharge pumped iodine monofluoride (IF). At the optimum output coupling 4 mJ was measured in a 30 ns FWHM pulse with a peak power of 140 kW. The merits and deficiencies of both HI and CF(,3)I as iodine donors …
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Electrochemical machining: prediction of operating parameters including extreme operating conditions.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1971.
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The effect of ball mill operating parameters on mineral liberation
In previous studies, the analysis of ball mill operating parameters and their effects on breakage phenomena has been limited to homogeneous materials. Though these studies have proven to be an asset in predictions of product size distributions and mill scale-up, they have not addressed the primary …
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An experimental study of dry particle coating : devices, operating parameters and applications
… MAIC, Mechanofusion and the Hybridizer. The key parameters affecting the coating performance of the dry coating devices are examined. The key parameters of MAIC are magnetic particle size, magnetic particle to powder mass ratio, frequency, current and processing time. The effects of the rotation …
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Effect of engine operating parameters and fuel characteristics on diesel engine emissions
… PPM D2. Tests were conducted with three engine operating conditions: 1682 RPM, 474 kPa BMEP; 2011 RPM, 1000 kPa BMEP; 2011 RPM, 1400 kPa BMEP. It was found that FT fuel reduced NOx emissions 19% in low load tests, but alone had little effect in higher load tests. FT fuel reduced particulate …
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Fault diagnosis and prediction in reciprocating air compressors by quantifying operating parameters
… are presented to determine the machine parameters. A personal computer based system used to measure the quantities necessary to solve for the machine parameters and the quantities used to compare with calculations is also documented. The solution algorithm for multi-stage compressors is …
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The effect of operating parameters on the wear behaviour of disc poppet valves in reciprocating slurry pumps
… designed and built which closely simulates the operating conditions experienced by slurry pump valves. Experiments have been conducted to determine the effect of the design parameters, namely - slurry constitution, valve closure velocity and valve angle, on the wear resistance of a low alloy …
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In-Depth Study of Different Magnetorheological Fluid Properties Under Different Operating Parameters, and in Presence of Organic Additives
… function of varying MRF formulation, and various operating parameters simultaneously. The results demonstrated a strong influence of magnetic particle concentration and operating temperature on MRF rheology. The obtained results are used in developing n-alkanethiol surface coating and elastic SEBS …
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An evaluation of the relationship of automobile door distortions to variations in material properties and production operating parameters
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1994, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science & Engineering, 1994.
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Deriving a rate equation for the removal of manganese from solution using a gas mixture of sulphur dioxide and oxygen
… rather as a function of the easily measurable operating parameters. From the literature, the operating parameters identified as playing a role in the rate of manganese precipitation are: the gas composition; the dissolved sulfur dioxide concentration; the dissolved oxygen concentration; the …
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Development of drilling optimization models for autonomous rotary drilling systems.
… of the human-driller in the management of operating parameters to improve system performance. Although existing work has identified the need to upscale from manual drilling to autonomous drilling systems with results based on manipulation of surface drilling parameters to construct …
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Motor simulation and parameter identification in a reciprocating mechanism
… data for the identification of the important operating parameters in the machine. First, a modification of a motor simulation program emphasizing losses is presented. The program is used to generate dynamic motor data for an analysis of a reciprocating mechanism. By analyzing the dynamic motor …
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Thermodynamic evaluation of the gasification of municipal solid waste
… focused on the effects the selected operating parameters have on the syngas composition, H2/CO ratio, and calorific value. The selection of the modelling approach focused on the problem statement. It was necessary to use a model that did not have a lot of limitations or relied on the …
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AN FFT SPECTRAL ANALYSIS FOR SYSTEM IDENTIFICATION
… for more accurate estimates of the system operating parameters becomes greater. One method of obtaining these operating parameters is by the use of the information contained in the spectral density functions of a test signal applied to the system. This thesis reviews the basic relationships …
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Experimental and Numerical Investigation of Tool Heating During Friction Stir Welding
… alloy AL 7075-T7351 over a wide range of process operating parameters using a combined experimental/numerical approach. In a statistical Design of Experiments fashion, 54 experimental welds (bead-on-plate) were performed at 27 different parameter combinations. Measured outputs during each of the …
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