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Now showing items 41-60 of 334
A fault detection scheme for modeled and unmodeled faults in a simple hydraulic actuator system using an extended Kalman filter
(University of Missouri--Columbia, 2006)
In this work an extended Kalman filter (EKF) is used to detect a variety of faults in a simple hydraulic actuator system. Much interest exists in detecting faults in their early stages in the hopes that machine downtime ...
Theoretial [sic] analysis of oscillating motion, heat transfer, minimum meniscus radius and charging procedure in an oscillating heat pipe
(University of Missouri--Columbia, 2008)
With the rapid development of electronic technology, investigation and application of devices with high performance of heat removal have become competitive issues recently. Different from traditional heat transfer strategy, ...
Horizontal zinc oxide nanomaterials growth and their application for surface enhanced raman scattering
(University of Missouri--Columbia, 2008)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT REQUEST OF AUTHOR.] Nanonecklace (NNs) or nanochains (NCs), aligned nanoparticles (NPs) in straight or curled shape, have been demonstrated using metals, silicon, silicides, ...
Electrostatically actuated and bi-stable MEMS structures
(University of Missouri--Columbia, 2007)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Bistable compliant micro-structures offer a tremendous advantage in the industry today, as these structures have an ability to maintain their shape ...
Nanomechanical property characterization of femoral head materials
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Orthopedic Implants under long-term physiological loading could produce changes in the surface mechanical properties and possible failure. The knowledge ...
Analysis and modeling of direct selective laser sintering of two-component metal powders
(University of Missouri--Columbia, 2005)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Direct Selective Laser Sintering (SLS) is an emerging technology of Solid Freeform Fabrication (SFF) that 3-D parts are built from the metal-based ...
Characterization of drillability of sandwich structure of carbon fiber reinforced epoxy composite over titanium alloy
(University of Missouri--Columbia, 2006)
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Composite-over-Titanium structures are the major candidates for substitution of conventional materials in aerospace industries. This paper investigates ...
A development of the motile sperm sorting microfluidic devices
(University of Missouri--Columbia, 2007)
The objectives of this research are developing and improving an inexpensive and convenient microfluidic device to apply to sperm cell sorting. Based on well known soft-lithography fabrication method which contains rapid ...
Neutron diffraction study of load response and residual stresses in WC-(Ni/Co) composites
(University of Missouri--Columbia, 2005)
The in-situ response of WC-Ni and WC-Co composites under compressive loading was measured using neutron diffraction techniques. These measurements give a clear indication of the elastic strain behavior of both the carbide ...
Nonlinear control and active damping of a forced-feedback metering poppet valve
(University of Missouri--Columbia, 2007)
For a metering poppet valve which was developed at the University of Missouri (MU valve), the valve can be configured for performance at the cost of stability. It is desirable to achieve both performance and stability using ...
Parametric and optimal design of modular machine tools
(University of Missouri--Columbia, 2007)
Over the years machine tools for manufacturing have developed into two classes. One is the general purpose machine tools, and the other is designed for machining large quantities of a specific part or process. These ...
Development of tailored preform processing technology for net-shape manufacturing of large monolithic structures
(University of Missouri--Columbia, 2007)
The aim of the present research effort involves exploration of a new processing approach, "Tailored Preform Processing (TPP)" technology for net-shape manufacturing of monolithic structures for the transportation industry. ...
Experimental and analytical study on two-phase impingement cooling with and without electric field
(University of Missouri--Columbia, 2007)
Among the thermal management solutions for power electronics, two-phase jet or spray impingement cooling are two promising candidates. In this study, electrohydrodynamic atomization (EHDA) method is used to generate spray ...
State space formulation of TFEA & uncharted islands of instability in milling
(University of Missouri--Columbia, 2007)
A new approach is developed to examine the stability of delay differential equations that builds upon the previous work in temporal finite element analysis. In contrast to the results of previous work, which could only be ...
Failure of transparent polymer composite laminated glass panels under impact loading
(University of Missouri--Columbia, 2007)
Historically, windows and other facilities during hurricanes have experienced significant damage exposing the occupants and the building envelope to uncomfortable and dangerous conditions. A new approach to the design of ...
Helical tool geometry in stability predictions and dynamic modeling of milling
(University of Missouri--Columbia, 2007)
The temporal finite element analysis (TFEA) method has been used in several publications to analyze interrupted machining dynamics. In this work, a higher order hp-version TFEA method will be presented which offers the ...
Investigation of the "unit cell" concept for air-to-liquid heat exchanger research and development
(University of Missouri--Columbia, 2007)
This study investigated the validity of the Unit Cell concept to explore the performance of air-to-liquid heat exchangers. The Unit Cell concept will test only a 15.24 cm by 15.24 cm portion of a full sized prototype coil, ...
Characterization of mechanical properties and study of microstructures of friction stir welded joints fabricated from similar and dissimilar alloys of aluminum
(University of Missouri--Columbia, 2007)
The objective of this research was to characterize the mechanical properties and study the microstructures of the friction stir welded joints to obtain the optimum process conditions that would result in the desired ...
An investigation of nonlinear tip-sample force models for nanoindentation
(University of Missouri--Columbia, 2007)
Current physical models of tip-sample interactions in nanoindentation and atomic force microscopy are exclusively based on either the Johnson-Kendall-Roberts (JKR) or Derjaguin-Muller-Toporov (DMT) models of adhesive contact ...
Blackbody temperature calculations from visible and newa-IR spectra for gas-fired furnaces
(University of Missouri--Columbia, 2005)
The goal of this research work is to develop a system capable of measuring multiple factors of interest in the operation of gas-fired furnaces. The primary focus is the development of a model for calculating wall or flame ...