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Geometric Effects Hydrodynamic Lubrication Study on a Gerotor Pump Operating at Low Speed
No full textThis work is a composition of several studies focused on geometric effects on hydrodynamic lubrication friction on a Delphi Technologies’ gerotor fuel pump section. The synthesized works were created in the helping process to the Fuel Handling team. The team’s overall goal with this project was to reduce electrical power consumption of the product at lower speeds per OEM request. Several modifications were made to the components of the mechanism to observe the hydrodynamic effects directly affecting overall pump performance. Moreover, three main sources of friction were identified and targeted for modifications. Each friction source study contained only the modified variables affecting the specific friction source at the time. Overall, modifications consisted in; varying journal-bearing clearances, testing of an alternative bushing material, a plugged drive shaft pocket, gear set eccentricity modifications ranging from 1.022mm to 1.065mm, and the analysis of a previous perpendicularity variation study from 2012. Out of all alterations, the ones which made a significant difference in power consumption are concluded to be; varying journal bearing clearances, improving axial pressure balance and eccentricity shift (with specific considerations)
2/6/2019: Program Change EE Minor
No full textRevisions to the required courses for the Electrical Engineering Minor.
Add ECE-101 or CS-101 and EE-336, remove EE-240. Change to “Select two additional courses that have an EE prefix or a CE prefix (except for EE-212)
1/16/2019: Course Change Form COMM 401/601
No full textA course focusing on how to design effective visualizations for communicating data and on how to deliver those visualizations in speech or prose is needed for graduate and upper-level undergraduate students. This course is required for students in the Data Science MS program, but is also of use to students in the School of Management
1/16/2019: Program Change - Business Program Name Change
No full textThis proposal includes a change in the name of the undergraduate business program from a Bachelor of Science in Business Administration to a Bachelor of Science in Management, and a realignment of the curriculum to better address the intent of the management program. The name change better reflects the intent of a focus on educating managers as opposed to a focus in specific business disciplines. In particular, the Bachelor of Science in Management (BSM) will consist of a rigorous core of management knowledge with emphasis on application; integrating knowing and doing by targeting academic preparation to professional development through coordination with cooperative educational experiences. The BSM will also feature preparation in Systems Management as an approach to fostering integrative understanding of the work of managers in today’s increasingly complex business environment. Additionally, students will have four alternatives for concentration of elective courses from other undergraduate programs at Kettering, as well as resources within the School of Management. These concentrations leverage strengths at Kettering University while also allowing students to significantly personalize their educational experience
Assessment of Various Parametric Effects on the Performance of a Commercial Grade Photovoltaic Solar Panel
Get PDFThis paper presents the implementation of an integrated photovoltaic solar panel model which includes all the necessary parameters in order to simulate and analyze using Matlab/Simulink software. The integrated photovoltaic model is validated with Matlab/Simulink simulation for a commercially available 100W photovoltaic solar panel module. Using the commercial solar panel specifications, such as solar irradiation, panel temperature, etc. the integrated model solved with Matlab/Simulink returns an I-V and PV performance characteristics under various conditions which enabled detailed analysis, assessment of parametric effect on the performance of the solar panel. According to the model simulation results for a commercial RNG-100D solar panel, it was found that panel performance was mostly affected by the variations of solar radiation/insolation, panel surface temperature, series resistance, shunt resistance and band gap energies of the semiconductor materials. The commercial solar panel simulation results show that a photovoltaic panel output power reduces as module temperature decreases. Taking the effect of sunlight irradiance and cell temperature into consideration, the output current and power characteristics of PV model are simulated and results can be optimized using the proposed model. The integrated model enables the dynamics of PV power system to be easily simulated, analyzed, and optimized
Distribution of Relaxation Times Analysis and Interfacial Effects of LSCF Fired at Different Temperatures
No full textThis paper describes the effects of (La0.60Sr0.40)0.95Co0.20Fe0.80O3-x (LSCF) firing temperature on the electrochemical performance and the chemical interactions at the interface of Gd-doped ceria (GDC) barrier layer and yttria-stabilized zirconia (YSZ) electrolyte for commercial cells. Initial scanning electron microscopy (SEM) analysis indicate that the optimal cathode porosity is obtained at a firing temperature of 1100 °C; however, the peak power is not observed at the same firing temperature. At 750 °C and using humidified hydrogen, the peak power densities are found to be 0.607, 0.959, 1.41, and 0.842 W/cm2 for a cathode firing temperature of 900, 1000, 1050, and 1100 °C, respectively. The power density data indicate an increasing trend in performance as the firing temperature increases; however, the electrochemical performance drops drastically at a firing temperature of 1100 °C. Using impedance spectroscopy (IS) and distribution of relaxation times (DRT) analysis, it is determined that the decrease in cell performance is mostly due to a slower charge transfer process. This is further confirmed using high resolution SEM/EDS and STEM/EDS analysis which show that Sr is present at the GDC/YSZ interface with the highest concentration at 1100 °C. This indicates that an insulating layer of strontium zirconate (possibly SrZrO3) has formed and is mostly responsible for low cell performance. In addition, STEM/EDS analysis shows that Zr and Ce have interdiffused with each other as well. It is further shown that more Zr (in addition to interdiffusion) has moved into the barrier layer in order to react with Sr to form the strontium zirconate
Morphological Analysis of Size and Shape (MASS): An Integrative Software Program for Morphometric Analyses of Leaves
Get PDFMorphometric analysis is a common approach for comparing and categorizing botanical samples; however, completing a suite of analyses using existing tools may require a multi-stage, multi-program process. To facilitate streamlined analysis within a single program, Morphological Analysis of Size and Shape (MASS) for leaves was developed. Its utility is demonstrated using exemplar leaf samples from Acer saccharum, Malus domestica, and Lithospermum
