Bidirectional reflectance is a fundamental property
used for the analysis of radiative heat transfer. It is a
form of reflectivity in which the spectral and directional
dependencies of both the beam incident on a surface and the
beam reflected from the surface are specified.
A new system has been designed...
The main source of the time-dependent behavior of fiber-reinforced composites is their polymeric matrix, which causes concerns about their long term durability. Although for composites where organic fibers such as Graphite are used, the fibers are also a contributing factor. A composite material may exhibit an appreciable amount of creep,...
During the operation of phase-change ink-jet printers a bubble formation
phenomenon often occurs. These bubbles are detrimental to the operation of
the printer and substantial efforts are made to remove them. The objective of
this research was 1: to develop a fundamental understanding of how bubble or
void formation occurs...
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...
A two-dimensional model for predicting the rate of radiation
heat transfer for the interior of an industrial furnace is described.
The model is two-dimensional due to the assumptions of the heat
source as an infinite radiating plane and the heat sink as rows of
parallel tubes that are both infinite...
A method to design foot trajectory in Cartesian
coordinates for a six-leg walking machine is presented in
this thesis. The walking machine is based on the geometry of
the darkling beetle.
The walking procedure developed by Y.S. Baek is
introduced first to provide step length and leg swing time
for...
The sketching software developed in this thesis, is aimed to serve as an intelligent design tool for the conceptual design stage of the mechanical design process. This sketching software, Sketch Pad for Windows, closely mimics the traditional paper-and-pencil sketching environment by allowing the user to sketch freely on the computer...
The engineering design process and the advancement of future computer-aided-design systems need new design aids to be used during the conceptual design phase. This design phase is where information gathering and understanding of the problem are developed, analyzed and broken into small more manageable elements. These elements consist of customer...
There are many situations in which contact between two
bodies is at a single point so there can be no tensile
(force). This form of contact only provides a single degree
of restraint, and is defined as a unidirectional point
contact. The analysis of Reuleaux shows that four suitably
placed...
Mechanical behavior of Nb-Ti superconducting composites with copper matrices have
been studied experimentally and theoretically.
Experimental work includes extensive measurements of Cu/Nb-Ti composite system.
Techniques for fine fiber testing and composite wire measurement have been developed.
Experimental parameters examined in this research include geometry, hardness, Young's
modulus, Poisson's ratio, yield...
A continuous process for the production of ceramic materials has been studied.
This method reacted metal and oxidizer in a diffusionally controlled process,
demonstrated by reacting a magnesium particle stream and hot water vapor. Many small
rich hydrogen/air diffusion flames provide an atmosphere of hot water vapor, hydrogen,
and nitrogen...
An optical diagnostic system capable of measuring angular displacements in a torsionally loaded shaft through noncontact means has been developed. Conventional
torsion diagnostic mechanisms must come in contact with the shaft to be analyzed. The signal-to-noise ratio response of conventional systems is compromised by dirt and wear. Another consequence of...
