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Dr. Eugene Olevsky, Director SDSU-UCSD
Joint Doctoral Program in Engineering Sciences,
Distinguished Professor of Mechanical Engineering
Novel Manufacturing
Principle for Fabrication of Advanced Composite Materials
A novel technique for the fabrication
of complex shape composite materials with functionally
distributed properties will be presented. The technique is
based on the electrophoretic deposition of powders which
allows continuous manufacturing of three-dimensional objects
- particle-by-particle, layer-by-layer. The developed
technological approach enables the net-shape production of
functionally-graded components which have applications in
thermal management of electronic circuitry.
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Gordon Brown, PhD Candidate,
Computational Science Department
3-D Solar Cell Finite
Element Sintering Simulation
The sintering process is ubiquitous in
manufacturing, but so far no standard simulation or modeling
program exists to model the deformation that occurs in this
process. An application of the Skorohod Olevsky Viscous
Sintering constitutive equation in a finite element model is
developed and used to model a solar cell manufacturing
problem. Material properties are measured and a solar cell
is then modeled using these properties. Simulation results
are compared to experimental results and analysis has been
made to evaluate the adequacy and usefulness of this
approach.
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Evan Khaleghi, PhD Candidate,
Mechanical Engineering Department
Enhanced microstructure in
dye-sensitized solar cells for improved absorption
properties
Dye-sensitized solar cells (DSSCs) are
a potential alternative to semiconductor solar cells,
because of their lower cost and ease of manufacture.
However, their performance is not on par with their
semiconductor rivals. Through the enhancement of the
microstructure of the titanium dioxide layer of the DSSCs
through various methods, improved absorption properties have
been measured. Some of the enhancement methods may have
applications in other areas.
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Chaowei Wang, PhD Candidate, Mechanical
Engineering Department
Mechanism and
Applications of Spark Plasma Sintering
Spark-Plasma Sintering (SPS), also
known as Electric-Discharge Sintering (EDS), Pulsed Electric
Current Sintering (PECS), and Field-Assisted Sintering (FAS),
is a process for rapid heating of powder by electric
current, with simultaneous application of external pressure.
Compared with conventional hot-pressing, SPS has many
advantages; such as high heating rate, less holding time,
more uniform heating condition, and intrinsic field effects
on mass transport. Various materials have been processed and
synthesized by SPS.
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Yen-Shan Lin, PhD Candidate, Mechanical
Engineering Department
Analysis of natural
cutting and piercing tools for biomimetic applications
Biomimetics is the process of
replicating a natural material using synthetic materials and
methods. By analyzing how nature creates certain tools,
particularly with the scanning electron microscope and
mechanical testing, we can apply these same principles to
improve modern tools. Examples include studying the teeth
of the great white shark, the proboscis of the mosquito, and
the tooth of the Piranha.
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