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Title: Study of the transmission of heat through tile and concrete fireproofing
Creator: Snow, C. A.
Date: 2009, 1912
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/studyoftransmiss00snow
Thesis (B.S.)--Armour Institute of Technology

Title: COMPUTATIONAL ACCESS FLOW REDUCTION EFFECT ON WALL SHEAR STRESS IN BRACHIOCEPHALIC FISTULAE
Creator: Wlodarczyk, Marta P.
Date: 2017, 2017-05
Description: The population of patients with end stage renal disease (ESRD) is growing at a rate higher than the global population. The only viable...
Show moreThe population of patients with end stage renal disease (ESRD) is growing at a rate higher than the global population. The only viable treatment for these patients is a kidney transplant. However, in the absence of a suitable kidney donor, renal patients are left with hemodialysis as a renal replacement therapy. Hemodialysis is facilitated through arteriovenous fistula (AVF), and the particular interest in this investigation is brachiocephalic fistula (BCF). The survival of dialysis patients depends on maintaining patency of fistula over a prolonged period of time. The extreme hemodynamic environment that is created by BCF triggers the onset of neointimal hyperplasia (NH) in most renal dialysis patients, which leads to access failure via stenosis. This is because the hemodynamics in AVF are well outside the normal physiological range. Computational fluid dynamics (CFD) along with shape optimization allows for the study of the hemodynamic parameters such as wall shear stress that have been shown to be detrimental in the future occurrence of cephalic arch stenosis. In this study, CFD modeling and identification of hemodynamic patterns was possible in three dimensions due to advanced post processing of IVUS patient-specific geometries. A method utilizing 3D CFD and shape optimization has been developed to implement Miller’s banding method used in clinical practice to evaluate its impact on WSS and onset of neointimal hyperplasia. The level of banding represented by a constriction is in fact a patient specific value and is not a trivial solution of minimum flow rate necessary to conduct hemodialysis; hence suggesting that even restoring the inlet velocity to the velocity pre-fistula creation might not reduce incidence of cephalic arch stenosis. The findings of this study support the previous hypothesis that non-homeostatic WSS distributions trigger neointimal hyperplasia and resulting venous stenosis. The important outcome is that the presented computational framework allows for evaluation of Miller's banding method for reducing the blood flow rate via surgical constriction and identification of a patient-specific banding level that restores the WSS to the normal physiological range.
M.S. in Mechanical and Aerospace Engineering, May 2017
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Title: Test of a three ton refrigerating plant
Creator: Beerbaum, A. J, Strale, N. W, Keachie, P. L.
Date: 2009, 1912
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testofthreetonre00beer
Thesis (B.S.)--Armour Institute of Technology, 1912 B.S. in Mechanical Engineering, 1912

Title: FLOW FIELD STRUCTURE AND UNSTEADY AERODYNAMIC LOADS ON AN AIRFOIL IN SURGING FLOW
Creator: Iliev, Simeon Milenov
Date: 2015, 2015-05
Description: Airfoils subject to unsteady freestream velocity as in the case of helicopter rotor blades and vertical axis wind turbines have been observed...
Show moreAirfoils subject to unsteady freestream velocity as in the case of helicopter rotor blades and vertical axis wind turbines have been observed to exhibit very interesting lift behavior. Depending on the frequency of the oscillating freestream velocity, the uctuating lift amplitude can reach values as much as twice of that predicted by a quasi-steady approximation or as low as only one-half of that. Experimental data and analysis presented in this study provide the exact relationship between surging ow frequency and amplitude of the uctuating lift force for a range of reduced fre- quencies between k=0.1 and k=1.5. Furthermore, surface pressure measurements on the suction surface of the airfoil are used to supplement the measured lift force data and provide a measure of the level of unsteady ow e ects. Finally, experimental particle image velocimetry ow eld data is presented for the two surging ow cases corresponding to the maximum and minimum uctuating lift amplitude and is used to extract coherent ow eld structures which are related to the respective lift be- havior. Both the experimental lift force data and ow eld structures are compared to corresponding, low Reynolds number numerical simulation results.
M.S. in Mechanical and Aerospace Engineering, May 2015
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Title: Study and design of tall office building power plant
Creator: Hill, Warren E
Date: 2009, 1905
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/studydesignoftal00hill
Thesis (B.S.)--Armour Institute of Technology

Title: Test of a Delavergne oil engine
Creator: Sieck, William
Date: 2009, 1911
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testofdelavergne00siec
Thesis (B.S.)--Armour Institute of Technology, 1911 B.S. in Mechanical Engineering, 1911

Title: The utility of the pyrometer on carburetted water gas machines
Creator: Heath, Chester S.
Date: 2009, 1911
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/utilityofpyromet00heat
Thesis (B.S.)--Armour Institute of Technology, 1911 B.S. in Mechanical Engineering, 1911

Title: A study and test of a boiler efficiency indicator
Creator: Wetzel, Guy F.
Date: 2009, 1916
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/studytestofboile00wetz
Thesis (B.S.)--Armour Institute of Technology

Title: MESOSCALE DEFORMATION IN A 9310 STEEL AND 2139 ALUMINUM ALLOY
Creator: Snyder, David
Date: 2012-09-10, 2012-12
Description: As technology continues to develop, the need for materials with superior structural performance grows. In recent years, the design of such...
Show moreAs technology continues to develop, the need for materials with superior structural performance grows. In recent years, the design of such high integrity alloys has led to a need for a more fundamental understanding of the deformation response of materials under various loading conditions. In this study, the deformation response of two high performance, high stacking fault metallic alloys are investigated. It has long been known that deformation in high stacking fault metals is a complex process of dislocation interactions that vary substantially with the loading conditions of strain, strain rate and temperature, as well as the chemistry and processing history of the alloy. The flow behavior and recrystallization response of a 9310 steel alloy deformed in the ferrite temperature range were studied in this work. Samples were compressed under various conditions of strain, strain rate and temperature using a Gleeble thermo-mechanical simulator. Deformation was characterized by both qualitative and quantitative means, using standard microscopy, electron backscatter diffraction (EBSD) analysis and flow stress modeling. The results indicate that deformation is primarily accommodated through dynamic recovery in sub-grain formation. EBSD analysis shows a continuous increase in sub-grain boundary misorientation with increasing strain, ultimately producing recrystallized grains from the sub-grains at high strains. This suggests that a sub-grain rotation recrystallization mechanism predominates in this temperature range. Demonstrated trends include a decreasing mean dynamically recrystallized grain size with increasing strain and Zener-Hollomon parameter, and an increasing recrystallized fraction with increasing strain. Another high stacking fault metal that has garnered a great deal of attention for its possible high performance structural applications is the 2139 aluminum alloy. In this study, the effect of chemistry and strain on the deformation response of the alloy system is investigated. 2139 aluminum is a very complex alloy, with multiple strengthening phases and mechanisms contributing to its overall high structural integrity compared to other aluminum alloys in its class. While the structural performance and TEM-scale deformation behavior of this alloy have been extensively analyzed, grain-scale microstructural features of deformation have not been well characterized. In addition, the contributions of each strengthening mechanism in the alloy are not well established. To characterize the deformation response of the alloy, alloys of various chemistries were produced and subjected to room temperature compression testing, in order to isolate and establish the effects of the major strengthening mechanisms on the overall behavior. Through electron backscatter diffraction analysis, the microstructural features of deformation generated in the alloys under these conditions were characterized, and the evolution and distribution of strain on a grain-scale was analyzed. Differences in deformation behavior with alloy chemistry were established by tracking differences in the evolution of lattice rotations with strain in the several alloys. It was determined that, for alloys subjected to artificial aging, the refinement in scale and distribution of the precipitate structure represents the greatest decrease in the development of lattice rotations with strain. This represents a first study into the room temperature, grain-scale deformation response of a heavily alloyed aluminum alloy, and the effect of alloy chemistry and precipitate structure on the deformation behavior of a 2139 aluminum alloy. As a preface to this study, a thorough review of the current state of literature on the deformation response of aluminum alloys was compiled as well.
M.S. in Materials Science and Engineering, December 2012
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Title: Test of a 25 hp type "e" Smith anthracite suction gas producer
Creator: Brown, P. K, Wald, M. D, Wintercorn, J
Date: 2009, 1913
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testof25hptypees00brow
Thesis (B.S.)--Armour Institute of Technology, 1913 B.S. in Mechanical Engineering, 1913

Title: The time factor in the operation of dry pipe sprinkler system
Creator: Metz, F. W., Moore, W. W., Schultz, W. E.
Date: 2009, 1911
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/timefactorinoper00metz
Thesis (B.S.)--Armour Institute of Technology

Title: A test of a pneumatic ASH handling system
Creator: Strong, Arthur P., Grassby, George A
Date: 2009, 1914
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testofpneumatica00stro
Thesis (B.S.)--Armour Institute of Technology

Title: Test of a no. 300 De Laval oil purifier and clarifier
Creator: Webster, Sheldon H
Date: 2009, 1921
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testofno300delav00webs
Thesis (B.S.)--Armour Institute of Technology

Title: Analysis of Maltese Cross Specimens to Determine Three-Dimensional Yield Surfaces
Creator: Chaudesaygues, Ludwig
Date: 2011-11-29, 2011-12
Description: Yield behavior of extremely porous solid foams under multiaxial states of stress is of significant importance because, unlike pressure...
Show moreYield behavior of extremely porous solid foams under multiaxial states of stress is of significant importance because, unlike pressure independent yield response of the majority of engineering materials, solid foams exhibit quadratic as well as linear dependence on hydrostatic stress component in their yield behavior. Therefore, there exists a critical need to analyze and use specimen geometries that allow biaxial and triaxial experiments through which yield surface can be probed under varying amounts of mean stress. This study investigates, through FE analysis, the feasibility of Maltese-Cross (MC) specimen geometry as a potential candidate for using in biaxial and triaxial experiments. Although solid foams have a pressure dependent yield behavior, the current study adopted a linear elastic-hardening J2 flow rule to keep the analysis reasonably simple and focus on the fundamental effect of specimen geometry on strain field and, more importantly, the extraction of yield point from multiaxial force-displacement data. One must recognize that in multiaxial experiments, particularly in triaxial loading, forces and displacements experienced by the nominal gage section cannot be directly measured for practical reasons. Instead, far field forces and displacements have to be used to calculate average measures of stress and strain within the gage section. This study shows through FE analyses that MC specimens can be used to determine the onset of macroscopic yielding under varying amount of mean stress component, provided that certain stress/strain paths, which cause premature deformation localization out of the gage section, are avoided.
M.S. in Mechanical and Aerospace Engineering, December 2011
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Title: DELAYING THE ONSET OF ROTATING STALL IN AN AXIAL COMPRESSOR
Creator: Thomas, Seth
Date: 2011-04-12, 2011-05
Description: The optimal performance of axial compressors is crucial in a number of appli- cations, including power plants and gas turbine engines. Their...
Show moreThe optimal performance of axial compressors is crucial in a number of appli- cations, including power plants and gas turbine engines. Their efficiency is limited by the onset of stall, when the pressure rise across the compressor drops suddenly and destructive flow patterns emerge. Because of this, all compressors operate at conditions away from the stall point, but with an accompanying penalty in efficiency. The objective of this study is to examine the detailed fluid dynamic processes lead- ing to stall and devise a scheme of active flow control to delay stall onset, allowing compressors to operate safely much closer to the stall point and at greater efficiency. This is done on the low speed axial compressor rig in the Fluid Dynamics Research Center at the Illinois Institute of Technology. Results indicated that the stall cell appears at a flow coefficient, φ = 0.292 and that it is small, located close to the casing, rotating with the rotor blade row, but at 55% of the rotor rotation rate. Detailed stall inception investigation revealed that small amplitude modal waves instigated flow breakdown upstream of the rotor blade row, causing a spike stall cell to develop. This spike cell rotates very quickly (70%) and grows rapidly into a finite stall cell, slowing its rotation rate as it becomes fully developed. Stagnation pressure in the wake of the rotor blades was phase locked to both the rotor and stall cell rotation, allowing phase-averaging techniques to reveal the averaged stall cell structure. A new actuator was designed for rotating stall control. Based on the stall inception results, a disturbance rejection scheme was devised to interact with the incipient stall cell, preventing its growth into a finite stall cell. The single blade was studied in a number of open loop control experiments, which indicated that pulsing at 2psi over a range of frequencies can inhibit stall inception, extending the operating range by 0.4% mass flow, thus stabilizing a previously unstable operating point.
M.S. in Mechanical and Aerospace Engineering, May 2011
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Title: A study of the retardation of combustion on passing thru wire screens place in a closed pipe
Creator: Mcdiarmid, E. Wallace
Date: 2009, 1916
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/studyofretardati00mcdi
Thesis (B.S.)--Armour Institute of Technology

Title: EFFECT OF STRAWBERRY ANTIOXIDANTS ON OXIDATIVE STRESS IN INSULIN RESISTANT INDIVIDUALS: A DOSE RESPONSE STUDY
Creator: Vijayakumar, Lakshmi Prabha
Date: 2014, 2014-05
Description: Oxidative and inflammatory stress is associated with chronic disease development and progression. Recent studies suggest that consumption of...
Show moreOxidative and inflammatory stress is associated with chronic disease development and progression. Recent studies suggest that consumption of fruits and vegetables rich in antioxidant compounds attenuate oxidative stress and inflammation. Strawberries are abundant in polyphenolic compounds with antioxidant properties, which have attracted research attention for their possible health benefits. The aim of the project was to determine whether the antioxidant properties of strawberries formulated in a beverage would dose-dependently restore oxidative stress induced by a high fat/ high carbohydrate meal in insulin resistant individuals. Plasma was collected from insulin resistant individuals (n=25) every 30-60 min over 6 h after ingestion after a 650 kcal high fat/ high carbohydrate meal accompanied with a beverage containing 0, 10, 20 or 40 g freeze-dried strawberry powder. The antioxidant capacity of test beverages containing 10, 20 and 40 g strawberry powder were 9.31± 0.66, 19.10 ± 0.60 and 33.57 ± 1.75 μmol Trolox equivalents/mL based on the Oxygen Radical Absorbance Capacity (ORAC) assay. The ORAC value for the placebo (0 g) was below the detectable limits. Biologically relevant oxidative stress was determined using the ORAC assay to estimate antioxidant capacity of the plasma and oxidation of low density lipoprotein (ox-LDL) using an ELISA assay to determine the oxidative damage. Assessment of ox-LDL over 6 hr revealed a significant effect of time (p<0.0001), however no significant difference between the treatment dosages was evident (p>0.05). A marginal treatment by time interaction suggested possible time specific differences between treatments. The evaluation of antioxidant capacity of the plasma was split into assessment of the hydrophilic and lipophilic fractions. Hydrophilic ORAC results showed ix no significant differences between test beverages over 6 hr (p>0.05), including effects of time or treatment by time interactions (p>0.05). The lipophilic ORAC also did not reveal significant differences between treatments (p>0.05). Overall, it appears that beverages with different “doses” of antioxidant capacity did not result in dose-dependent changes in oxidative stress in insulin resistant individuals. There was a trend for protection of ox-LDL by the 20 g strawberry beverage revealed by differences among treatments at 240 min compared to the placebo/0 g strawberry beverage. The findings suggest that antioxidant food properties do not translate directly to plasma antioxidant capacity as measured by ORAC and alternative mechanisms are likely responsible for biological antioxidant effects of strawberry.
M.S. in Mechanical and Aerospace Engineering, May 2014
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Title: SYNTHESIS, PURIFICATION AND CRYSTAL GROWTH OF INDIUM IODIDE SEMICONDUCTORS
Creator: Bertorello, Charles
Date: 2012-04-23, 2012-05
Description: The indium monoiodide (InI) semiconductor is a promising candidate for Gamma-ray and X-ray radiation detector devices. The high atomic number...
Show moreThe indium monoiodide (InI) semiconductor is a promising candidate for Gamma-ray and X-ray radiation detector devices. The high atomic number of indium (In) and iodine (I), along with high density, give the InI detector a higher photon stopping power (attenuation coe cient) compared to germanium based detectors and comparable to that of CdT e. Based on the previous research on melt synthesis and vapor synthesis by Dr. Ostrogorsky at Rensselaer Polytechnic Institute (RPI) and Dr. Burger at Fisk University from 2006 to 2009, the present work improves the purity of indium monoiodide by demonstrating the e ciency of zone re ning of this material. A segregation coe cient study is presented based on a Glow Discharge Mass Spectrometry (GDMS) and an Instrumental Gas Analysis (IGA) analyses performed by Evans Analytical Group (EAG). Two indium monoiodide crystals were grown using the Vertical Bridgman technique and analyses done on one of the crystals shown a resistivity of 3 109 .cm which is the second highest value reported. Indium monoiodide synthesized and puri ed in this current study was used to grow several Czochralski crystals.
M.S. in Mechanical, Materials, and Aerospace Engineering, May 2012
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Title: Test of a 400 hp gas producer at Armour & Co., Chicago, Ill.
Creator: Boblett, K. M., Boughton, N. J.
Date: 2009, 1909
Publisher: Armour Institute of Technology
Description: http://www.archive.org/details/testof400hpgaspr00bobl
Thesis (B.S.)--Armour Institute of Technology; Includes bibliographical references(...
Show morehttp://www.archive.org/details/testof400hpgaspr00bobl
Thesis (B.S.)--Armour Institute of Technology; Includes bibliographical references( leaves 78-84) and index
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Title: NOVEL METHOD OF MANUFACTURING HYDROGEN STORAGE MATERIALS COMBINING WITH NUMERICAL ANALYSIS BASED ON DISCRETE ELEMENT METHOD
Creator: Xuzhe, Zhao
Date: 2015, 2015-07
Description: High efficiency hydrogen storage method is significant in development of fuel cell vehicle. Seeking for a high energy density material as the...
Show moreHigh efficiency hydrogen storage method is significant in development of fuel cell vehicle. Seeking for a high energy density material as the fuel becomes the key of wide spreading fuel cell vehicle. LiBH4 + MgH2 system is a strong candidate due to their high hydrogen storage density and the reaction between them is reversible. However, LiBH4 + MgH2 system usually requires the high temperature and hydrogen pressure for hydrogen release and uptake reaction. In order to reduce the requirements of this system, nanoengineering is the simple and efficient method to improve the thermodynamic properties and reduce kinetic barrier of reaction between LiBH4 and MgH2. Based on ab initio density functional theory (DFT) calculations, the previous study has indicated that the reaction between LiBH4 and MgH2 can take place at temperature near 200°C or below. However, the predictions have been shown to be inconsistent with many experiments. Therefore, it is the first time that our experiment using ball milling with aerosol spraying (BMAS) to prove the reaction between LiBH4 and MgH2 can happen during high energy ball milling at room temperature. Through this BMAS process we have found undoubtedly the formation of MgB2 and LiH during ball milling of MgH2 while aerosol spraying of the LiBH4/THF solution. Aerosol nanoparticles from LiBH4/THF solution leads to form Li2B12H12 during BMAS process. The Li2B12H12 formed then reacts with MgH2 in situ during ball milling to form MgB2 and LiH. Discrete element modeling (DEM) is a useful tool to describe operation of various ball milling processes. EDEM is software based on DEM to predict power consumption, liner and media wear and mill output. In order to further improve the milling efficiency of BMAS process, EDEM is conducted to make analysis for complicated ball milling process. Milling speed and ball’s filling ratio inside the canister as the variables are considered to determine the milling efficiency. The average and maximum speed of balls is critical to affect the collision force among balls. High collision force can be achieved by applying large torque on the milling shaft. The high milling speed and large ball’s filling ratio increase the torque and average speed of balls. However, the high average speed and large torque lead to non-uniformed milled material. Therefore, appropriate milling speed and ball’s filling ratio are ought to be selected to have better milled materials. The results of this study lead to the feasibility of LiBH4 + MgH2 system for reversible hydrogen storage application near ambient temperature. Applying appropriate ball’s filling ratio and milling speed can improve the milling efficiency of BMAS method.
M.S. in Material Science Engineering, July 2015
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