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Title: Design of a foam fire extinguisher system
Creator: James, Garret B
Date: 2009, 1920
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/designoffoamfire00jame
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 78-79

Title: ANALYSIS OF MECHANICAL NOISE GENERATION IN WIND TURBINE DRIVE TRAIN
Creator: Patel, Hirenkumar J.
Date: 2012-05-01, 2012-05
Description: The research work presented here is a part of a project, funded by U.S. Department of Energy to study mechanical noise generated by a wind...
Show moreThe research work presented here is a part of a project, funded by U.S. Department of Energy to study mechanical noise generated by a wind turbine drive train. In our study a Viryd 8 kW wind turbine drive train test bed located at the Illinois Institute of Technology was used. Various wind speeds and turbulence levels could be simulated using a computer program that is used to control the test bed. Acoustic measurements were carried out using a single microphone and a microphone array. The microphone array was used to localize noise sources on the drive train. Various beamforming algorithms such as FDBF, DAMAS2, CLSC, DAS and TIDY were used to study the noise sources. Quali cation experiments using synthetic sources showed that \Clean based on spatial coherence" beamforming algorithm localizes noise sources very accurately for narrowband frequency analysis and TIDY was found to work best for broadband analysis. The resolution of the beamform maps improved for higher frequencies of interest (>700 Hz). The continuous variable planetary (CVP) gearbox, which is a proprietary gearbox by Viryd was used in the drive train to optimize the generator rotational speed. An interesting trend was observed in active power generated for the wind speeds greater than 10 m/s, where the power does not increase signi cantly as it is regulated at 6000 Watts. CVP speed ratio, ratio of input rotational speed to output rotational speed of CVP, was also found to be having similar e ect after wind speed reaches a value of 10 m/s. Vibrations of the drive train test bed were studied using accelerometers. It was observed that the test bed was vibrating at a fundamental frequency of 120 Hz, with harmonics of decreasing amplitude at 240 and 360 Hz. Vibrations in all degrees of motion were found to be occurring at similar frequencies. Acoustic beamforming using a microphone array showed that the test bed was a dominant noise source at the same frequencies. Initially the entire test bed was covered by a Plexi-glass casing for safety reasons. It was found that the glass casing a ected the microphone array measurements as the noise produced by the components had no direct path to the array. Almost all the measured noise was refracted through the gaps between the glass casing and the stretcher holding it, that led to spurious microphone array results. As a result of this, the experiments were conducted without the glass casing. It was discovered after the experiments that the glass casing not only a ects the path of sound but the amplitude is also a ected. The components of the drive train namely gearbox, brake, CVP and generator, were found to be emitting sound at various discrete frequencies ranging from 165 to 3885 Hz. They were also found to be emitting broadband noise, where gearbox and generator were found to be most dominant noise sources. We were able to separate each noise source on a complex wind turbine drive train that contributed to the mechanical noise generation from a wind turbine.
M.S. in Mechanical and Aerospace Engineering, May 2012
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Title: Installation and test of a three-ton York refrigerating plant
Creator: Bradford, Jesse Dudley, Robertson, Alexander F, Newman, Irwin
Date: 2009, 1913
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/installationtest00brad
Thesis (B.S.)--Armour Institute of Technology

Title: Installation and operation of boiler control apparatus
Creator: Durhan, E. J.
Date: 2009, 1918
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/installationoper00durh
Thesis (B.S.)--Armour Institute of Technology; Bibliography: leaves 134-135

Title: Influence of weight of governor balls on the speed and economy of a simple corliss engine
Creator: Irving, George F., Johnson, P. O. E.
Date: 2009, 1913
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/influenceofweigh00irvi
Thesis (B.S.)--Armour Institute of Technology, 1913 B.S. in Mechanical Engineering, 1913

Title: Installation and operation of 100 horse power Sprague electro-dynamometer, including tests of 40 horse power 4 cylinder tee head Teetor motor
Creator: Erickson, Harry Elmer, Gumpper, Harold Dickinson
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/installationoper00eric
Thesis (B.S.)--Armour Institute of Technology

Title: Influence of depth of fire on efficiency & capacity of a 200 H.P. stirling boiler with McKinzie Stoker
Creator: Byers, A. A., Young, D. A
Date: 2009, 1910
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/influenceofdepth00byer
Thesis (B.S.)--Armour Institute of Technology, 1910 B.S. in Mechanical Engineering, 1910

Title: Installation and test of a three-ton ice making plant
Creator: Beck, C. E., Mccague, J. A., Fenn, J. G.
Date: 2009, 1911
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/installationtest00beck
Thesis (B.S.)--Armour Institute of Technology; Includes bibliographical references and index

Title: ACOUSTIC BEAMFORMING USING PHASED MICROPHONE ARRAY: A NOVEL METHOD TO DETECT AIR INFILTRATION
Creator: Prakash, Manisha
Date: 2013, 2013-12
Description: The major issue of air in ltration in buildings is the soaring energy consumption. According to the US Department of Energy, in 2003 it was...
Show moreThe major issue of air in ltration in buildings is the soaring energy consumption. According to the US Department of Energy, in 2003 it was estimated that there was 48% of space conditioning energy consumption due to air in ltration. This is responsible for 9.19 quadrillion Btu (quads) of energy which costs half billion dollars annually. If, just the HVAC energy consumption due to in ltration can be taken care of; then 1.2 quads of energy can be saved i.e., around 60 million dollars per year. The present state-of-the-art technique to measure air leakage rates is the Blower Door method. In order to locate air leakage spots in buildings, Tracer Gas/ Smoke Stick technique is used. The major drawbacks of these techniques are; the blower door method requires building evacuation and becomes impractical for large spaces and the tracer gas technique uses chemicals that can be hazardous. An innovative remote air leakage technique namely, beamforming using phased array, is proposed in this thesis. It is fast, compact and economical compared to methods like blower door and tracer gas which are both time consuming and require a lot of resources. It is important to validate our approach by some preliminary experiments and to benchmark these against the \real building" experimental data. We perform tests to compare the present state-of-the-art technique i.e., the blower door test with our proposed remote detection method of using acoustic phased array to detect air in ltration. To resolve sources at low frequency and get better beamform maps, subwoofers are used. Detailed description of the technique along with details of the experimental setup and discussion of results are presented in this thesis.
M.S. in Mechanical and Aerospace Engineering, December 2013
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Title: YIELD BEHAVIOR OF SOLID FOAMS UNDER MULTIAXIAL STATES OF STRESS
Creator: Ehaab, Mohammad
Date: 2011-12-14, 2011-12
Description: Growing use of solid foams as core material in load bearing composite sandwich structures requires the development as well as validation of...
Show moreGrowing use of solid foams as core material in load bearing composite sandwich structures requires the development as well as validation of predictive yield criteria for these extremely porous and, hence, lightweight engineering materials. It has been well established that solid foams, unlike the majority of bulk materials, have a pressure dependent yield behavior. This makes the validation of various yield criteria proposed in literature a challenging task because of the need for complex biaxial and triaxial experiments, which is the main reason for both the scarcity of data and the lack of predictive power in existing models. Although there have been a limited number of studies recently in literature to generate data beyond uniaxial compression and tension experiments by introducing new loading apparatuses such as Arcan apparatus and universal biaxial testing device (UBTD), they have been limited to probe shear-compression and shear-tension states of stresses without independent control of the shear component. Therefore, the data extracted from these experiments cover only a small fraction of stress space. An example of a truly biaxial testing machine with independent load control is biaxial crushing machine (BICURMA) which, however, is restricted to only compressive loads. One must recognize that biaxial testing, even with full tension/compression control, doesn’t expand the fraction of yield surface that can be probed in any significant proportion beyond shear/compression techniques. Extremely pressure dependent mechanical behavior of solid foams requires triaxial experiments for a full description of their yield surface, hence the challenge. This work addresses this challenge by using a multiaxial testing apparatus (MATA) developed at IIT to comprehensively probe the yield surface of Divinycell H100 and H130 PVC foams through uniaxial, biaxial and triaxial experiments where loads are independently controlled in each orthogonal direction. Data reduction relies on new scalar measures of characteristic stress and strain proposed by Ayyagari and Vural (2011), and yield data is compared with their newly developed pressure dependent yield criterion. Experimental results reveal that solid foams exhibit both quadratic and linear pressure dependence. Although quadratic dependence on pressure has been previously shown in literature with a limited number of experimental yield data, extensive yield data of the current study suggests a significant linear dependence as well. The final portion of this study outlines a set of new micro-scale experiments designed to test mechanical behavior of individual ligaments that make up Duocell aluminum foam, and some preliminary results.
M.S. in Mechanical, Materials, and Aerospace Engineering, December 2011
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Title: INFEASIBILITY OF A POINTWISE TRUNCATION ERROR ESTIMATE TO DRIVE MESH ADAPTATION
Creator: Singh, Manpreet
Date: 2016, 2016-12
Description: An investigation of the Fast Approximation Scheme or FAS multigrid truncation error estimates at grid points with application to mesh...
Show moreAn investigation of the Fast Approximation Scheme or FAS multigrid truncation error estimates at grid points with application to mesh redistribution is presented. Feasibility of the error estimate as a means to adapt the mesh to a physical problem by solving the elliptic mesh equations derived from minimization of the error estimate based on the principle of equidistribution is examined by solving 1-D numerical test cases. To keep mesh movement under control, a parabolized version of the mesh equation is also tested to make an active comparison of the possible improvements in adaptivity and mesh quality. The results reveal smoothness issues indicating the need for a more robust estimator within the adaptive redistribution framework. Particularly, the prevalence of poor zonal e↵ects on the mesh points alone, point to lack of information over each cell thereby rendering the estimate ine↵ective to adapt the mesh.
M.S. in Mechanical Engineering, December 2016
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Title: Mathematica Tutorial
Date: 2011, 2011
Description: A tutorial to help you learn the Mathematica tools that are particularly useful in engineering. Note that some of the graphics output has been...
Show moreA tutorial to help you learn the Mathematica tools that are particularly useful in engineering. Note that some of the graphics output has been removed from the download version to reduce the size of the notebook. Evaluate the notebook to regenerate these and complete the notebook.
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Title: Influence of Injector Location on Part-Load Performance Characteristics of Natural Gas Direct-Injection in a Spark Ignition Engine
Creator: Hall, Carrie, Sevik, James, Pamminger, Michael, Wallner, Thomas, Scarcelli, Riccardo, Boyer, Brad, Wooldridge, Steven, Miers, Scott
Date: 2016
Publisher: SAE International

Title: An application of polarized light to resolution with the compound microscope
Creator: Stump, Dan M.
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/applicationofpol00stum
Thesis (B.S.)--Armour Institute of Technology

Title: MECHANICAL PROPERTIES AND DEFORMATION MECHANISMS OF TERNARY γ-γ’-δ NICKEL-BASED SUPERALLOYS
Creator: Di Sciullo Jones, Alexander
Date: 2012-12-03, 2012-12
Description: The primary drive towards the continued development of nickel-based superalloys lies in the turbine industry, both for propulsion and power...
Show moreThe primary drive towards the continued development of nickel-based superalloys lies in the turbine industry, both for propulsion and power generative uses, where approximately 90% of such materials are used. The ongoing trend is to increase the temperature, increase the rotational speed, and decrease the weight of turbines to increase their efficiency. Thus, much of the improvement of the efficiency of these machines rests on what materials are available to the industry. This has led to the design of superalloys specifically tailored to withstand the varied and increasingly demanding properties of turbine parts. Turbine discs, as one such part, experience substantially lower temperatures than the turbine blades, thus the creep properties of materials to be used in such an application are not quite as important. However, in the drive to increase turbine rotation speed and reduce weight, the industry is looking for materials which can withstand higher stresses. It is with this goal in mind that the material focused on in this work, V204H, was designed. The material utilizes a novel, three-phase microstructure consisting of γ-γ’-δ rather than a conventional two-phase γ-γ’ microstructure. It has been theorized that the addition of δ precipitates, formed through the addition of niobium, will behave as a reinforcement phase as in a particulate composite. The material was also heavily alloyed to increase strengthening and improve creep behavior via the addition of elements which decrease diffusion rate and deter grain boundary damage. It was discovered that this material has a fourth phase between the γ’ precipitates, and this was identified using SAD to be γ”. Flow stress tests over a range of temperatures and creep tests, both performed in compression, were conducted. These properties were seen to be exemplary for use in a turbine disc. It was, however, found that such properties deteriorated when the testing was conducted in tension. This xv
M.S. in in Materials Science and Engineering, December 2012
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Title: GRAIN BOUNDARY ENGINEERING IN INCONEL 600
Creator: Li, Baishun
Date: 2013, 2013-12
Description: Grain Boundary Engineering (GBE) is a process consisting of deformation-anneal iterations that increase special boundaries, especially the...
Show moreGrain Boundary Engineering (GBE) is a process consisting of deformation-anneal iterations that increase special boundaries, especially the fraction of Σ3 boundaries, to improve material properties such as corrosion resistance, intergranular fracture resistance or ductility. In this work, Inconel 600 super alloy was chosen as the research material. Different levels of compression at various temperatures followed by a subsequent anneal were used on the Inconel 600 to investigate the respective Σ3 boundary fractions as a function of processing. Orientation Image Microscopy (OIM) was applied to scan, observe and analyze the microstructures of the samples before and after deformation. The work was aimed at investigating the effect of hot deformation on the Σ3 boundary fraction in Inconel 600 and understanding the mechanisms of Grain Boundary Engineering. The formation of twins was studied with emphasis on their formation following elevated temperature deformation.
M.S. in Material Science and Engineering, December 2013
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Title: ELECTROSTATIC SPRAY DEPOSITION OF SOLID OXIDE FUEL CELL ELECTROLYTE
Creator: He, Quanzhi
Date: 2013-04-30, 2013-05
Description: 8mol% yttria-stabilized zirconia (YSZ) is the most currently used electrolyte material for solid oxide fuel cell (SOFC) due to is chemical and...
Show more8mol% yttria-stabilized zirconia (YSZ) is the most currently used electrolyte material for solid oxide fuel cell (SOFC) due to is chemical and thermal stability and its high oxygen ion conductivity at high temperature. However, SOFC based on YSZ electrolyte operate generally at very high temperatures (900-1000℃) for adequate oxygen conductivity, therefore the selection of materials for other cell components has a lot of problems, such as high materials costs and degradation of performance. To avoid the problem associated with high temperatures, it would be desirable to reduce the operating temperature from 900℃ to intermediate temperatures, typically 600-800℃. But, at these temperature, the ohmic losses due to the low ionic conductivity of the electrolyte become too high for thick (100μm) YSZ electrolyte. Therefore, a thin (less than 10μm) but dense and tight electrolyte is needed. Because the thin film YSZ electrolyte makes the oxygen ions have a shorter conducting path, unit cells have less ohmic resistance at a reduced temperature. To make SOFC working at intermediate temperature, a thin (less than 10μm) but dense and tight electrolyte is needed. This work takes a closer look at electrostatic spraying of ceramic suspensions and the ability of sprayed layer to sinter into dense layer under the 10μm thickness range. In this study, a new ESD deposition system was designed and produced, the relationship between ESD parameters and the deposition results was established, most of all, pore free and complete dense ultra-thin YSZ electrolyte thin film (less than 1μm) was successfully made with ESD technique.
M.S. in MaterialsS ciencea ndE ngineering, May 2013
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Title: Bibliography of power plant engineering
Creator: Keeth, Grover
Date: 2009, 1906
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/bibliographyofpo00keet
Thesis (B.S.)--Armour Institute of Technology; Includes bibliographical references leaves...
Show morehttp://www.archive.org/details/bibliographyofpo00keet
Thesis (B.S.)--Armour Institute of Technology; Includes bibliographical references leaves. 53-54 and index
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Title: Bursting strength of standard pipe and fittings
Creator: Hatman, J. G., Leawell, R. A
Date: 2009, 1910
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/burstingstrength00hatm
Thesis (B.S.)--Armour Instit\ute of Technology, 1910 B.S. in Mechanical Engineering, 1910

Title: Broman steam separating and water circulating device
Creator: Broman, John G., Jr
Date: 2009, 1916
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/bromansteamsepar00brom
Thesis (B.S.)--Armour Institute of Technology

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