AC 2007-1844: An Innovative Mechanical and Energy Engineering Curriculum

AC 2007-1844: An Innovative Mechanical and Energy Engineering Curriculum

Date: 2007
Creator: Michaelides, Efstathios & Mirshams, Reza
Description: This paper discusses the addition of a new Department of Mechanical and Energy Engineering at the University of North Texas (UNT). Those involved see the curriculum for this new program as a new model of engineering education that parallels the innovations of UNTs current Learning to Learn (L2L) project-oriented concept course with the addition of innovative approaches for mechanical engineering and emphasis on energy engineering education.
Contributing Partner: UNT College of Engineering
Sustainable Energy Solutions for Water Purification Applications: Municipal and Industrial Case Studies

Sustainable Energy Solutions for Water Purification Applications: Municipal and Industrial Case Studies

Date: May 2014
Creator: Mira, SebastiĆ£o Bittencourt de
Description: In several areas around the world, clean water is a precious asset that at anytime, and mainly due to circumstances of weather and climate, can become scarce. Mainly in the dry and remote places, people suffer with lack of water. A solution for this suffering can be a water desalination system, which makes water potable and usable for industry. That solution inherently, brings the problem of power requirement, which is sometimes arduous to accomplish in such remote areas of difficult access and long distances to overcome to build the infrastructure required to operate an electric power plant. Texas and the USA also face this scenario for many regions, for which the government has been creating some programs and driving forward incentives, looking for solutions to support water desalination. Water desalination has future applications for municipalities water-consuming or for arid and remote regions, as well as for industries that rely on heavy water usage, such as natural gas drilling operations, for which millions of gallons are trucked overland to the site and also hauled away afterwards, when the waste water produced must be treated. This thesis created the concept of autonomy for water desalination plants replacing the actual power supply from ...
Contributing Partner: UNT Libraries
Impacts of Fracking on Local Ozone Pollution in DFW Area

Impacts of Fracking on Local Ozone Pollution in DFW Area

Date: 2014
Creator: Ahmadi, Mahdi & John, Kuruvilla
Description: Poster for the 2014 University of North Texas (UNT) Graduate Exhibition. This poster discusses the impacts of fracking on local ozone pollution in the Dallas-Fort Worth area.
Contributing Partner: UNT College of Arts and Sciences
Electrowetting Solar Cell

Electrowetting Solar Cell

Date: April 19, 2012
Creator: Reilly, David & Cheng, Jiangtao
Description: This paper discusses the electrowetting solar cell. In comparison with traditional silicon-based PV solar cells, the electrowetting-based self-tracking technology will generate ~70% more green energy with a 50% cost reduction.
Contributing Partner: UNT Honors College
Impact of Natural Gas Hydraulic Fracturing on Ozone Pollution in Dallas-Fort Worth Area

Impact of Natural Gas Hydraulic Fracturing on Ozone Pollution in Dallas-Fort Worth Area

Date: June 10, 2014
Creator: Ahmadi, Mahdi & John, Kuruvilla
Description: Poster for the 2015 Global Emission Initiative (GEIA) Conference. This poster discusses the impact of natural gas hydraulic fracturing on ozone pollution in the Dallas-Fort Worth area.
Contributing Partner: UNT College of Arts and Sciences
Simulation Study of Tremor Suppression and Experiment of Energy Harvesting with Piezoelectric Materials

Simulation Study of Tremor Suppression and Experiment of Energy Harvesting with Piezoelectric Materials

Date: August 2012
Creator: Ou, Jianqiang
Description: The objective of this research is to develop a wearable device that could harvest waste mechanical energy of the human hand movement and utilize this energy to suppress wrist tremors. Piezoelectric material is used to measure the hand movement signals, and the signal of wrist tremor is filtered to be utilized to suppress the tremor. In order to conduct the experiment of energy harvesting and tremor suppression, an experimental rig was fabricated. Two types of piezoelectric materials, PVDF (polyvinylidene fluoride) films and MFC (macro fiber composite) films, are used to harvest mechanical energy and used as actuators to suppress hand tremors. However, due to some shortages of the materials, these two types of materials are not used as actuators to suppress the wrist tremors. Thus, we use Matlab Simulink to simulate the tremor suppression with AVC (active vibration control) algorithm.
Contributing Partner: UNT Libraries
UNT Research, Volume 22, 2013

UNT Research, Volume 22, 2013

Date: 2013
Creator: University of North Texas
Description: UNT Research magazine includes articles and notes about research at University of North Texas in various academic fields.
Contributing Partner: University Relations, Communications & Marketing department for UNT
An Evaluation of the Correlation Between Shale Gas Development and Ozone Pollution within the Barnett Shale Region

An Evaluation of the Correlation Between Shale Gas Development and Ozone Pollution within the Barnett Shale Region

Date: September 4, 2014
Creator: Ahmadi, Mahdi & John, Kuruvilla
Description: Presentation for the 2014 Fracturing Impacts and Technologies Conference. This presentation discusses an evaluation of the correlation between shale gas development and ozone pollution within the Barnett Shale region.
Contributing Partner: UNT College of Arts and Sciences
Electrodepostion of Iron Oxide on Steel Fiber for Improved Pullout Strength in Concrete

Electrodepostion of Iron Oxide on Steel Fiber for Improved Pullout Strength in Concrete

Date: August 2014
Creator: Liu, Chuangwei
Description: Fiber-reinforced concrete (FRC) is nowadays extensively used in civil engineering throughout the world due to the composites of FRC can improve the toughness, flexural strength, tensile strength, and impact strength as well as the failure mode of the concrete. It is an easy crazed material compared to others materials in civil engineering. Concrete, like glass, is brittle, and hence has a low tensile strength and shear capacity. At present, there are different materials that have been employed to reinforce concrete. In our experiment, nanostructures iron oxide was prepared by electrodepostion in an electrolyte containing 0.2 mol/L sodium acetate (CH3COONa), 0.01 mol/L sodium sulfate (Na2SO4) and 0.01 mol/L ammonium ferrous sulfate (NH4)2Fe(SO4)2.6H2O under magnetic stirring. The resulted showed that pristine Fe2O3 particles, Fe2O3 nanorods and nanosheets were synthesized under current intensity of 1, 3, 5 mA, respectively. And the pull-out tests were performed by Autograph AGS-X Series. It is discovering that the load force potential of nanostructure fibers is almost 2 times as strong as the control sample.
Contributing Partner: UNT Libraries
Investigation of an Investment Casting Method Combined with Additive Manufacturing Methods for Manufacturing Lattice Structures

Investigation of an Investment Casting Method Combined with Additive Manufacturing Methods for Manufacturing Lattice Structures

Date: August 2013
Creator: Kodira, Ganapathy D.
Description: Cellular metals exhibit combinations of mechanical, thermal and acoustic properties that provide opportunities for various implementations and applications; light weight aerospace and automobile structures, impact and noise absorption, heat dissipation, and heat exchange. Engineered cell topologies enable one to control mechanical, thermal, and acoustic properties of the gross cell structures. A possible way to manufacture complex 3D metallic cellular solids for mass production with a relatively low cost, the investment casting (IC) method may be used by combining the rapid prototyping (RP) of wax or injection molding. In spite of its potential to produce mass products of various 3D cellular metals, the method is known to have significant casting porosity as a consequence of the complex cellular topology which makes continuous fluid's access to the solidification interface difficult. The effects of temperature on the viscosity of the fluids were studied. A comparative cost analysis between AM-IC and additive manufacturing methods is carried out. In order to manufacture 3D cellular metals with various topologies for multi-functional applications, the casting porosity should be resolved. In this study, the relations between casting porosity and processing conditions of molten metals while interconnecting with complex cellular geometries are investigated. Temperature, and pressure conditions on the ...
Contributing Partner: UNT Libraries
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