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High Capacity Lithium-Ion Battery Characterization For Vehicular Applications, Sazzad Hossain Ahmed
High Capacity Lithium-Ion Battery Characterization For Vehicular Applications, Sazzad Hossain Ahmed
Masters Theses
A lithium-ion battery is one of the key research topics in energy storage technologies. Major characterization tests such as static capacity, open circuit voltage (OCV), hybrid pulse power characterization (HPPC) have been conducted on two different chemistries, LiMnNi and LiFePO4, high capacity lithium-ion batteries over a wide range of temperatures from 50ºC to -30ºC. Detail analysis of temperature effects on battery capacity and simple models of direct current resistance (DCR) increment and power decrement over temperatures have been proposed using the test results. Electrochemical impedance spectroscopy (EIS) tests have been performed to find out the dominant internal resistances …
The Implementation Of A Versatile Pseudodynamic Hybrid Simulation For Seismic Evaluation Of Structural Systems, Chelsea Griffith
The Implementation Of A Versatile Pseudodynamic Hybrid Simulation For Seismic Evaluation Of Structural Systems, Chelsea Griffith
Masters Theses
Pseudodynamic hybrid simulation technique was developed to evaluate structural seismic performance by physically testing the critical portion with the remaining structure simulated using a numerical model in the computer. An incremental approach was adopted in developing the control scheme to suit multiple testing facilities and test specimens. First the small scale, predictable specimen was utilized to investigate techniques of improving stability, slowing down the loading rate and triggering the accurate force measurement in a series of at benchmark scale experiments in the Laboratory of Earthquake and Structural Simulation at Western Michigan University (WMU). A step/hold command scheme was developed and …