• Characterization and comparison of white layer by hard turning versus grinding 

  Sahani, Jasdeep Singh (University of Alabama Libraries, 2004)

  Compared with grinding, hard turning has the potential to make a variety of precision components of superior surface integrity, such as bearings, gears, cams, shafts, tools, dies, etc., while reducing investment, increasing ...
• Computational and experimental study of geometry modifications inside a flow-blurring injector 

  Vardaman, Nathan James (University of Alabama Libraries, 2018)

  Liquid fuel atomization is widely used for combustion in many applications. With the strong emphasis on emissions regulations coupled with the ever increasing drive to improve energy efficiency, all aspects of combustion ...
• Strain rate and temperature dependence on the constitutive behavior of advanced structural alloys for aerospace systems 

  Rodriguez, Omar Leonardo (University of Alabama Libraries, 2018)

  Titanium alloys and Nickel-based superalloys are omnipresent in advanced aerospace and terrestrial systems due their combination of specific material properties (normalized by density) and superb performance at elevated ...
• Application of macroscopic elasticity models to predict microstructurally small crack growth 

  Cauthen, Tanner (University of Alabama Libraries, 2018)

  The need for a more lightweight and structurally stable alloy is evident in industry. Before a specific alloy is put into industrial use, the alloy must be properly tested such that structural integrity is insured. In this ...
• Acoustic methods for regionalizing an impact force acting on a helmet structure 

  Davis, Jacob (University of Alabama Libraries, 2018)

  It is often desired to know the location and magnitude of a force acting on a structure. Unfortunately, it is not always possible or desirable to install a sensor at the force location, such as when the force location is ...
• Multiscale investigation on surface integrity and performance of metal parts by selective laser melting 

  Li, Chao (University of Alabama Libraries, 2018)

  Selective laser melting (SLM) is a popular metal additive manufacturing process which has drawn a great attention in the past decade. It can make functional metal parts directly from the CAD data in a layer upon layer ...
• Catalytic converter thermal model for hybrid electric vehicle engine on/off control strategy development 

  Young, Karissa (University of Alabama Libraries, 2017)

  A 3-dimensional (3-D), thermochemical catalytic converter model was developed to investigate the effects of engine-off periods typical in hybrid electric vehicle (HEV) operation on overall emissions conversion effectiveness. ...
• An investigation of primary reference fuel combustion in the modified derived cetane tester 

  Suttle, Aaron Edward (University of Alabama Libraries, 2017)

  Contemporary liquid combustion research is constantly in pursuit of higher fuel efficiencies and lower overall emissions. This is done in multiple ways, but of extraordinary value are studies furthering the understanding ...
• Microstructural and mechanical characterizations of metallic parts made by powder-bed fusion additive manufacturing technologies 

  Wang, Xiaoqing (University of Alabama Libraries, 2017)

  Two typical powder-bed additive manufacturing (AM) technologies are selective laser melting (SLM) and electron beam additive manufacturing (EBAM). Due to the complex thermal history and the interactions among the thermal, ...
• Development and modeling of a solar powered ground source heat pump system 

  Qian, Defeng (University of Alabama Libraries, 2017)

  Buildings consumed 40% of the energy and represented 40% of the carbon emissions in the United States. This is more than any other sector of the U.S. economy, including transportation and industry. Most building energy ...
• Surface integrity and energy consumption in machining of inconel 718 produced by selective laser melting 

  Brown, Daniel James (University of Alabama Libraries, 2017)

  The development of additive manufacturing (AM) in the past decade has brought along with it a number of new opportunities and challenges when it comes to how parts are manufactured. While this development represents an ...
• Microstructure and mechanical properties of additively manufactured parts with staircase feature 

  Keya, Tahmina (University of Alabama Libraries, 2017)

  This thesis focuses on a part with staircase feature that is made of Inconel 718 and fabricated by SLM process. The objective of the study was to observe build height effect on the microstructure and mechanical properties ...
• Design and control of powered transtibial prostheses 

  Zheng, Hao (University of Alabama Libraries, 2017)

  The primary purpose of lower extremity prostheses is to restore the locomotive functions of amputees’ lost sections and joints. The objective of this dissertation is to develop energetically active transtibial (TT, also ...
• Uncertainty quantifications and operation optimization of buildings as virtual batteries for the grid with high penetrations of renewables 

  Niu, Fuxin (University of Alabama Libraries, 2017)

  In the United States, 40% of the nation’s total energy consumption and 75% of the total electricity consumption are consumed by commercial and residential buildings, and those numbers are projected to be 46% and 80% by ...
• YSZ-Ceria for chemical looping syngas production 

  Chattopadhyay, Abhirup (University of Alabama Libraries, 2017)

  The increase of carbon footprint over the years is a serious cause of concern for mankind in recent times. As a consequence, carbon capture and sequestration has been given unprecedented focus. Chemical looping combustion ...
• Development of a high-fidelity engine modeling framework in Simulink with automated combustion parameter tuning 

  Thompson, Bradley Adam (University of Alabama Libraries, 2017)

  The automotive industry continually seeks to improve performance and fuel efficiency due to increasing fuel costs, consumer demands, and greenhouse gas regulations. With advancements in computer-aided design, engine ...
• Commissioning of high speed imaging system for rainbow schlieren measurements of vaporizing liquid fuel sprays 

  Mirynowski, Eileen Marie (University of Alabama Libraries, 2016)

  The fuel injection process has been studied since the internal combustion engine was developed. Direct injection has been an integral part to the success of diesel engines, where there is minimal time for the fuel to mix ...
• Circuit optimization for enhancing the output power of a piezoelectric energy harvester 

  Zargarani, Anahita (University of Alabama Libraries, 2016)

  The goal of this research is to investigate electrical circuits for piezoelectric energy harvesting, and proposing an electrical interface to enhance the output power of a piezoelectric energy harvester. Following this is ...
• Processing-surface integrity-fatigue relationship in electrical discharge machining of nitinol shape memory alloy 

  Liu, Jingfu (University of Alabama Libraries, 2016)

  Nitinol is a nearly equiatomic nickel-titanium shape memory alloy (SMA) with two unique properties, i.e., thermal shape memory and superelasticity. Nitinol has broad applications in medical device, aerospace, actuator, ...
• Thermal and thermomechanical studies of beam-based powder-bed additive manufacturing processes 

  Cheng, Bo (University of Alabama Libraries, 2016)

  Powder-bed beam-based metal additive manufacturing (AM) such as electron beam additive manufacturing (EBAM) and selective laser melting (SLM) has a potential to offer innovative solutions to many challenges faced in the ...

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