Index Catalog // ScholarsArchive@OSU

Modes of vibration of inextensible cables suspended from two points

Creator:: Thompson, Roger S.
Abstract:: The equations of motion of a suspended, inextensible cable in the absence of damping are studied. A method is developed and illustrated for determining the frequencies and mode shapes for small oscillations about the equilibrium configuration. With the introduction of a new variable, the fourth order equation governing tangential displacement...
Resource Type:: Masters Thesis
Full Text:: two points AN ABSTRACT OF THE THESIS OF Roger Steven Thompson for the Master of Science (Name

Computational modeling of Lorentz force induced mixing in alkali seeded diffusion flames

Creator:: Thompson, Jon Ira
Abstract:: Lorentz forces provide a unique method for the control and mixing of gas flows without the physical intrusion of objects into the flow. Lorentz forces arise when an electric current is passed through a volume in the presence of a magnetic field. The interaction between the electric current and the...
Resource Type:: Masters Thesis
Full Text:: Maximum Force Left 111111%1111alaa%\5151aa%\1% 1 t 'alftttt 1/1111111till/W/111111////111111/1

A thermodynamic study of energy absorbed by a motored four cycle engine with positive exhaust pressure as applied to commercial exhaust brakes

Creator:: Thompson, Ralph Allen
Resource Type:: Masters Thesis
Full Text:: TO COMMERCIAL EXHAUST BRAKES by RALPH ALLEN THOMPSON A THESIS sub!litted to OREGON STATE

Development of a control system for a walking machine leg

Creator:: Thompson, Eric William
Abstract:: This thesis presents a control system for a walking machine leg. The leg is representative of one of the six legs required for a proposed walking machine based on the geometry of the darkling beetle. Each of the three joints is controlled by a DC servo motor mounted to the...
Resource Type:: Masters Thesis
Full Text:: angle, and the basic path with a constant body velocity. ©Copyright by Eric W. Thompson May 8, 1992

Particulate and total gaseous hydrocarbon emissions from a gas heated veneer dryer

Creator:: Shigehara, Roger T.
Abstract:: A source test was conducted to determine the particulate and the total gaseous hydrocarbon emissions from a gas heated veneer dryer. Samples were taken on eight separate days from the exhaust stacks while the dryer was processing Douglas fir veneer. Of the eight days, three was used to determine the...
Resource Type:: Masters Thesis
Full Text:: content. e = - 0.000660(1 + 0.00115t1)p(t - t') B = -2-(100) w p where t = dry bulb temperature, ° C

Elastic, plastic, and total strains in human and porcine pedicle trabecular bone and PU-foam after pedicle screw insertion by utilizing functional micro-CT imaging

Creator:: Moran, Sean T.
Abstract:: Pedicle screw breakage and loosening remain as clinical complications of short segment instrumentation procedures for spinal stabilization. This study has directly visualized and measured elastic, plastic and total vertebral pedicle trabecular bone full-field strains in the regions immediately surrounding the pedicle screw during pedicle screw insertion by utilizing functional microCT...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Sean T. Moran for the degree of

Optical sensing and metrology for on-machine surface inspection in manufacturing processes

Creator:: Lee, Eddie T.
Abstract:: Optical sensing technologies are pivotal in the manufacturing process, specifically in defect detection, tool condition estimation, and monitoring. The research aims to enhance the accuracy, efficiency, and reliability of manufacturing metrology by employing optical sensing technologies, such as laser profilometers and image processing techniques. The dissertation proposes intelligent and flexible...
Resource Type:: Dissertation
Full Text:: the tool’s life ends. The active grain density, C(w), can be calculated as an indirect measure of

Feasibility of Lorentz mixing to enhance combustion in supersonic diffusion flames

Creator:: Nahorniak, Matthew T.
Abstract:: The purpose of this research was to determine if it is feasible to apply Lorentz mixing to supersonic diffusion flames, such as those found in SCRAMjet engines. The combustion rate in supersonic diffusion flames is limited by the rate at which air and fuel mix. Lorentz mixing increases turbulence within...
Resource Type:: Masters Thesis
Full Text:: Constant S Artificial Viscosity T Temperature u Velocity in x-Direction Velocity in y-Direction W

Thermal annealing of Mo/Si multilayers to assess the stability relevant to soft x-ray projection lithography

Creator:: Viliardos, Michael A.
Resource Type:: Masters Thesis
Full Text:: . Kassner and B. Rosen for all their assistance. I also wish to thank my committee members T. Kennedy, W

An investigation of the effects of radial acceleration on a fluidized bed used for filtration of air-borne particulate of submicron size

Creator:: Junge, David C.
Resource Type:: Dissertation
Full Text:: : R. W. Bo bel The mechanisms which are involved in filtration of air-borne particulate matter have

Performance of a spark-ignition engine with admission of some internal knock-suppressing coolants

Creator:: Seshadri, Erode Venkataramanan
Resource Type:: Masters Thesis
Full Text:: help, and to Professor W. H. Paul, under whose direction and supervision this work was undertaken

Energy Harvesting Performance of a Flapping Foil with Leading Edge Motion

Creator:: Prier, Michael W.
Abstract:: Force data for a flapping foil energy harvester with active leading edge motion operating in the low reduced frequency range is collected to determine how leading edge motion affects energy harvesting performance. The foil pivots about the midchord and operates in the low reduced frequency range of 0.06, 0.08, and...
Resource Type:: Masters Thesis
Full Text:: bound vorticity distribution due to flow perfectly navigating the leading edge, and downwash W (x, t

Modeling hop kilning with respect to energy consumption and drying kinetics

Creator:: Thomas, Matthew W.
Abstract:: Currently, little work has been performed studying energy consumption in hop kilning. This thesis explores drying with an alternative drying schedule that extends the initially elevated drying temperature currently used by growers and examines its impact on drying time and energy use. Extending the time of the initially elevated drying...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Matthew W

The fracture toughness of medium density fiberboard and other fiber bridging composites

Creator:: Matsumoto, Noah T.
Abstract:: In many composites, fiber bridging develops as part of the fracture process. Fiber bridging invalidates many toughness evaluation methods such as the ASTM E399 and complicates the identification of crack length, which is a necessary parameter in energy methods. In order to measure the toughness of fiber bridging composites, an...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Noah T. Matsumoto for the degree of Master of Science in

Detecting fluid flows with bioinspired hair sensors

Creator:: Dickinson, Benjamin T.
Abstract:: Many animals detect prey or enhance their locomotion with information from hair-like receptors that are activated by local fluid flows. The utility of biological hair receptors has motivated the design of artificial hair sensors (AHS) for flow control applications where aerodynamic or hydrodynamic forces play a significant role in the...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Benjamin T. Dickinson for

Quantification of total and plastic 3D strain fields within micro-damaged polyurethane foam

Creator:: Sutton, Matthew T.
Abstract:: Local material damage that occurs within cellular solids, such as polymer foams and trabecular bone, and precedes local fractures of the cell struts or walls is called micro-damage. The accumulation of micro-damage within cellular solids is often undesirable, although it is thought to be vital to the development and health...
Resource Type:: Masters Thesis
Full Text:: T. Sutton for the degree of Master of Science in Mechanical Engineering presented on December 9

Experimental development and characterization of a small-scale planar flow casting (PFC) machine

Creator:: Smith, Mark T.
Resource Type:: Masters Thesis
Full Text:: AND CHARACTERIZATION OF A SMALL-SCALE PLANAR FLOW CASTING (PFC) MACHINE by Mark T. Smith A THESIS

Nonlinear model reduction using the group proper orthogonal decomposition method

Creator:: Dickinson, Benjamin T.
Abstract:: Proper orthogonal decomposition (POD) in conjunction with the Galerkin projection has been used as a model reduction technique for the tractable real-time control of high-dimensional systems. While POD based model reduction may improve the tractability of high-dimensional models, the nonlinear POD based model may be impractical for control due to...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Benjamin T. Dickinson for the degree of

Evaluation of Adoptability : The Iterative Development of an Energy Production Device for the Middle School Classroom

Creator:: Heck, Samuel T.
Abstract:: This study conducts follow up research to my Mechanical Engineering Senior Project that was completed in March 2015. It follows the Student Powered Hydro and Entertainment Device (SPHED) as it is used in various middle school and high school classrooms. SPHED has three modules: a power generation module, a hydropower...
Resource Type:: Honors College Thesis

A methodology for iterative design using physical test data

Creator:: Morris, Wesley T.
Abstract:: This thesis addresses a common knowledge gap that was identified amongst the Society of Automotive Engineers (SAE) competition design teams at Oregon State University. Students that join the SAE teams at Oregon State University typically do not have experience using physically collected data during a design process. This leads to...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Wesley T. Morris

Investigations into the effects of a vibrating meniscus on the characteristics of drop formation

Creator:: Lewis, Kevin T.
Abstract:: As drop-on-demand (DOD) applications continue to gain ground in desktop inkjet-printing, 3D printing, fluid mixing, and other areas the demand for higher frequency operations are beginning to push against the current physical boundaries in DOD technology. The current research is exploring the possibility of controlling drop volume and velocity at...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kevin T. Lewis for

A model for the mechanical behavior of irradiated mixed carbide sphere pac fuel pins

Creator:: George, Thomas L.
Abstract:: A model is developed that allows the prediction of the stress-strain distribution in a mixed carbide sphere pac fuel pin during irradiation. The model is coupled with a previously developed model for the thermal behavior of the pin. The one-dimensional (radial at various axial locations) solution is for quasi-steady pin...
Resource Type:: Dissertation
Full Text:: Behavior of Irradiated Mixed Carbide Sphere Pac Fuel Pins Abstract approved: Redacted for Privacy T. L

A study of laser generated Rayleigh and Lamb waves in graphite/epoxy composites

Creator:: Park, Heeyong
Abstract:: The application of laser generated ultrasonics was first demonstrated in the mid-seventies and has shown good potential when applied to isotropic materials. However, its use with composite materials is still in the early stages of development. This study explores the potential for application of laser generated Rayleigh and Lamb waves...
Resource Type:: Dissertation
Full Text:: committee members, T. C. Kennedy, M. N. L. Narasimhan, E. Wolff, and Graduate Committe Representative, R. H

Lateral fluid motion in nucleate boiling through asymmetric surface structures

Creator:: Kapsenberg, Florian
Abstract:: This thesis presents a feasibility study of a means to passively effect liquid motion parallel to a heated surface though surface geometrical modifications. Such a passive system is beneficial for electronics cooling applications as it reduces the pumping equipment normally required in flow loops and is desired for space applications,...
Resource Type:: Masters Thesis
Full Text:: varied between 2 W/cm2 and 19 W/cm2 at these conditions. Magnified high-speed videos were used to

Optimal control of an underactuated bipedal robot

Creator:: Jones, Mikhail S.
Abstract:: Bipedal robots represent a unique class of control problems that combine many of the most difficult elements of nonlinear control. These robots are typically designed to be mobile and as such have limited energy and actuator authority making efficiency a prime concern. Unlike wheeled robots, legged robots must transition between...
Resource Type:: Masters Thesis
Full Text:: : Jonathan W. Hurst Bipedal robots represent a unique class of control problems that combine many of the

Transient nonlinear deformations of viscoelastic membranes

Creator:: Jenkins, Christopher H. M.
Resource Type:: Dissertation
Full Text:: advisor Dr. John W. Leonard, without whose guidance and patience this thesis would not have been

Undamped oscillations of air springs

Creator:: Moustafa, Mahmoud Abd-elfattah
Resource Type:: Masters Thesis
Full Text:: i 3 h 7 t 10 11 12 13 1 15 16 I O. 0.792 o.76h 0.710 0.66 0.577 0.).W. 0.777 o.28 0.131 0 -0.131

Heat transfer coefficient of boiling ammonia in an incline tube

Creator:: Holstege, Conrad Johan Marie
Resource Type:: Masters Thesis
Full Text:: Calculatea heat transfer coefficients from test data were expressed in an equation: h = at1 100.014t t

Comparing Delay and Reflected Inertia for an Actuated Spring Loaded Inverted Pendulum Model

Creator:: Reinschmidt, Kurt W.
Abstract:: Legged robots, while advancing quickly, have far to go before they can recover from major disturbances safely and consistently. Reflected inertia, which affects how quickly the actuators can physically respond to an environmental disturbance, and delay, which describes the time necessary for the controller to sense, re-plan, and respond to...
Resource Type:: Honors College Thesis
Full Text:: T = Ireflected ∗ a If the reflected inertia is higher then same amount of torque will result in

Fracture energies of Zircaloy and some zirconium alloys

Creator:: Rawers, James C.
Abstract:: The fracture mechanics of Charpy V-notch specimens of Zircaloy-4 and phosphorus contaminated Zircaloy-4 were investigated. Three-point bend and impact tests with Charpy V-notch samples provided an efficient and economical method of fracture evaluation. Fracture failure was monitored by the force-displacement curve. Failure was initially analyzed using fracture toughness values as...
Resource Type:: Dissertation
Full Text:: approved: Redacted for Privacy W. D. McMullen The fracture mechanics of Charpy V-notch specimens of

A model of ciliary streaming in the respiratory system

Creator:: Chambers, Alan B.
Abstract:: The respiratory tract is lined with a mucous blanket which is motivated by a ciliated epithelium. This blanket includes a lower serous layer of fluid through which the cilia beat and an upper viscid layer into which particulates from the inhaled air are deposited. The movement of the mucous blanket...
Resource Type:: Dissertation
Full Text:: is a function which satisfies the condition with boundary conditions: 2 aw aw_o 8X2 aT W(1, T

The application of paramagnetism to the measurement of oxygen in engine exhaust gases

Creator:: Boubel, Richard W. (Richard William), 1927-2010
Resource Type:: Masters Thesis
Full Text:: OWLDGMNTS The author expresses grateful appreciation to Professor W. H. Paul for his guidance and

Experimental evaluation and numerical modeling of a water source heat pump evaporator

Creator:: Means, Paul Morency
Abstract:: Water source heat pumps are increasingly being used for residential and commercial space heating. Typically, these heat pumps are capable of both heating and cooling, and historically the design emphasis has been on improving the units' cooling performance. Recently, there has been more interest in improving the heating performance, however,...
Resource Type:: Masters Thesis
Full Text:: : MR w Flow Direction parallel, counter Dependent: 21 0.11 - 0.53 kg/s (15 - 70 lbm/min) T

The development of the characteristic grid for supersonic diverging jets exhausting into a hypersonic parallel flowing stream

Creator:: Henry, Calvin Scott
Resource Type:: Masters Thesis
Full Text:: DIV I$O x Urto nero PRAITTL :itEA* C4LVXM CTT 4HZ aubaltted t SVT CLG in rttI fuitt11aett f

Forming dimensionless products by using an algorithm developed from matrix theory

Creator:: Bonsu, Osei Kwabena
Resource Type:: Masters Thesis
Full Text:: superscript T. For example, correspond- Ing to V is the transpose matrix (y w x y z), a row matrix, de

A design of a furnace for melting refractory metals using a plasma jet heat source

Creator:: Van Kleeck, Nelson Leeds
Resource Type:: Masters Thesis
Full Text:: ¿I Ç o p C G W a / c r /.5 .S C L2 e a.s .s ¿ t-i L a 3 e a//c s. t7i'/.; Ho/der- A&8r3

Passive dynamics and their influence on performance of physical interaction tasks

Creator:: Kemper, Kevin C., II
Abstract:: For robotic manipulation tasks in uncertain environments, research typically revolves around developing the best possible software control strategy. However, the passive dynamics of the mechanical system, including inertia, stiffness, damping and torque limits, often impose performance limitations that cannot be overcome with software control. Discussions about the passive dynamics are...
Resource Type:: Masters Thesis
Full Text:: Dynamics and Their Influence on Performance of Physical Interaction Tasks Abstract approved: Jonathan W

An analytical model for fatigue crack propagation

Creator:: Anderson, James L.
Abstract:: Beginning with the basic equations from the theory of elasticity and employing a model of crack propagation based on the concept of a constant plastic energy absorption per unti of crack extension, the commonly accepted power law of fatigue crack propagation was derived. This derivation uses an extension of the...
Resource Type:: Masters Thesis
Full Text:: for privacy Dr. Robert W. Thresher Beginning with the basic equations from the theory of elasticity

A comparison of a special cored brake drum with one of conventional design

Creator:: Whitcomb, Carroll Card
Resource Type:: Masters Thesis
Full Text:: Figure 4. Conventional 9rake Druni t') o.. 27 constructed, the direction of rotation, the angle

Initial performance of rigid, porous sheets of sintered-polyethylene powder for filtering airborne sander dust

Creator:: Anderson, Charles Michael
Resource Type:: Dissertation
Full Text:: FILTERING AIR BORNE SANT"'D ThTTCT Redacted for privacy Abstract approved: R. W. Boubel The mechanisms

A quantitative study of recirculation in cooling towers

Creator:: Chiang, Chung
Resource Type:: Masters Thesis
Full Text:: \ b0. OO J (\ o Los [u., (h x ro2 )o'32" ,t,J (sinB ) w Figure 20. Experimental Results Using'(0

The effect of the antiknock fluid content in gasoline on piston ring wear as determined by radioactive tracer

Creator:: McKee, Laird Wesley
Resource Type:: Masters Thesis
Full Text:: ~ · l ~ CJ,L'L s n ld tiO .lO ~ "l ~ O t7c;, I I I l w t- s n ld t i O . l O

An investigation of the removal of ozone by activated charcoal

Creator:: Liffick, Glenn Lonngren
Abstract:: The removal of ozone from an air stream by activated-cocoanut charcoal was investigated from the literature and experimentally. The experimental investigation showed that activated-cocoanut charcoal can be used to remove concentrations of ozone less than 1.0 ppm with high efficiencies. The mechanism of the ozone removal appeared to be a...
Resource Type:: Masters Thesis
Full Text:: REMOVAL OF OZONE BY ACTIVATED CHARCOAL Abstract approved: Redacted for Privacy Richard W. Boubel The

NOx emissions for a gas turbine as a function of fuel-bound nitrogen and other variables

Creator:: Faye, William C.
Abstract:: Emissions of oxides of nitrogen from a small (15 kW) turbine generator burning high fuel bound nitrogen fuels were measured by a chemiluminescence method. Kerosene was used as the base fuel and pyridine was added to achieve different fuel bound nitrogen levels. Mixtures of 0.0%, 0.5%, and 1.0% (by weight)...
Resource Type:: Masters Thesis
Full Text:: , ASME Paper #81-GT-51. 17. P. R. Singh, E. R. Bazarian, P. R. Mulik, G. W. Bauserman, A. Cohn, T. R

Improved part-load economy using high compression and lean mixtures with the Humphreys variable compression ratio engine

Creator:: Houser, Donald Wilfred
Resource Type:: Masters Thesis
Full Text:: , and to kir. W. H. Paul for his constructive guidance and criticism. TABLE OF CONTENTS P age

Effect of engine operating variables and fuel air ratios on knock characteristics of selected hydrocarbons

Creator:: Siegel, Jack Wendel
Resource Type:: Masters Thesis
Full Text:: inolued t facilitate evaluation of antI-ìnoek value. The ive8tiguttorLe were cnacle usiug s CF

Control of spring-mass running robots

Creator:: Vejdani Noghreiyan, Hamid Reza
Abstract:: We seek the control strategies that are applicable on legged robots and control them to run in real world as robust and efficient as animals. To achieve this goal, we need to understand the principles of legged locomotion and the control policies that animals use during running. In this study...
Resource Type:: Masters Thesis
Full Text:: approved: Jonathan W. Hurst We seek the control strategies that are applicable on legged robots and

The effects of various pre-weighing procedures on the reported weights of air pollutants collected by filtration

Creator:: Kowalczyk, John F.
Abstract:: A study was conducted to determine what effects the type of pollutants, storage conditions, storage time, and method of sample conditioning have on the reported weight of an air pollutant collected by filtration. Samples were collected from a refuse dump, an arc furnace smelting nickel ore, and a rotary kiln...
Resource Type:: Masters Thesis
Full Text:: arc furnaces. Figure 2. The Bureau of Mines rotary kiln. ` J _ Y - , . -^ (!w' µt, '4. _ I T

Mixture control testing of a spark-ignition engine with anti-detonant admission

Creator:: Mingle, John Glenn
Resource Type:: Masters Thesis
Full Text:: theory. The following has been pre- sented by A. T. Coiwoll nd a8sociates. The effect of any cooling

Analysis of operating parameters on surface ignition in spark ignition engines

Creator:: Proctor, Robert Swope
Resource Type:: Masters Thesis
Full Text:: his appreciation to W. H. Paul, Professor of Automotive &igineerin, and to S. H. Graf, Head of the

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