Mechanical Engineering & Applied Mechanics: Recent submissions
Now showing items 101-120 of 143
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Numerical Simulations of Incompressible and Compressible Transitional Turbine Flows
(North Dakota State University, 2014)Accurate and reliable turbulence and transition models are needed for prediction heating loads in the hot section of the turbine, and predicting aerodynamic losses when designing new blade profiles. Two dimensional ... -
Ultra-Violet Degradation Behavior of Polymeric Backsheets of Photovoltaic Modules
(North Dakota State University, 2014)This study is designed to understand the ultra-violet (UV) degradation of polymeric backsheets used in PV modules. Commercial photovoltaic backsheets from four suppliers were UV-aged for up to 3000 hours. The aged samples ... -
Numerical Simulation of Direct Expansion Solar-Assisted Heat Pump Water Heater Using Carbon Dioxide as Refrigerant
(North Dakota State University, 2013)Compared to the conventional solar-assisted heat pump (SAHP) water heating system, a relatively more compact direct-expansion solar assisted heat pump (DX-SAHP) has been introduced, in which the solar collector acts as an ... -
Dynamics of Compound Droplets via 3D Spectral Boundary Elements
(North Dakota State University, 2013)Compound droplets raise great interests due to their applications in the pharmaceutical, cosmetic, and food industry. In spite of the growing demand of theoretical investigation of dynamics of compound droplets from those ... -
Method for Compliance Controlled Adhesive Switching and Magnetically Controlled Switchable Adhesives
(North Dakota State University, 2013)Adhesives are used in a variety of ways and are so common that they are easily overlooked. Adhesive hooks, tapes, glues, and switchable climbing mechanisms used by insects and lizards are clear examples of how adhesives ... -
An Experimental Study on a Density Driven Solar Water Heating System Using Supercritical CO2 as Working Fluid
(North Dakota State University, 2013)For supercritical carbon dioxide, a small change in temperature or pressure can result in large change in density, especially close to its critical point. At this pseudocritical region, density decreases rapidly with ... -
Nonlinear Fatigue Damage Accumulation in Aircraft Engine Alloys Multiaxial Loading
(North Dakota State University, 2013)Fatigue is considered to be one of the most frequent phenomena in the failure of many machine parts. Most of the prior studies on fatigue have been limited to uniaxial loading cases with a primary focus on constant ... -
Nanomechanical Characterization of Tobacco Mosaic Virus Superlattice with Novel Atomic Force Microscopy Methods
(North Dakota State University, 2013)Tobacco mosaic virus (TMV) has been widely studied due to its excellent properties. In order to utilize TMV superlattice, this thesis initiates the study on its mechanical properties. The elastic modulus of TMV superlattice ... -
Theoretical and Experimental Studies of Droplets Wetting on Micronano-Fibrous Materials and their Applications in Oil-Water Separation
(North Dakota State University, 2013)This research was aimed at the theoretical and experimental investigation of wetting behavior of immiscible droplets sitting on filaments and related applications in oil-water separation. This work consisted of three ... -
Mechanical Analysis of Polycarbonate/Polysiloxane Block Copolymers and Blends
(North Dakota State University, 2013)Polydimethylsiloxane (PDMS) can be used to react with polycarbonate (PC) to generate PC-PDMS multiblock copolymers and PC/PC-PDMS-PC triblock blends to overcome the notch sensitivity of PC while maintaining its transparency. ... -
Numerical Studies of Droplet Behavior in a Steady Non-Uniform Electric Field
(North Dakota State University, 2013)An initially uncharged droplet suspended in another immiscible fluid under the influence of a steady non-uniform electric field may experience deformation, migration and bursting. This work numerically investigated the ... -
Properties of Flax Fiber Reinforced Composites
(North Dakota State University, 2013)In the field of renewable materials, natural fiber composites demonstrate the capacity to be a viable structural material. When normalized by density, flax fiber mechanical properties are competitive with E-glass fibers. ... -
Thermo-Mechanical Analysis of Polyamide Biocomposites
(North Dakota State University, 2012)Biobased fillers in thermoplastics have seen increased usage over the last several years. The increased usage of biobased fillers follows the ever-increasing thrust to reduce petroleum and synthetic petrochemical product ... -
Shock Tube Design and the Kinematics of the Hybrid III Dummy Head under Shock Waves of Blast
(North Dakota State University, 2012)Traumatic brain injury (TBI) is one of the most common injuries to soldiers in warfare today. A TBI occurs when the human brain is damaged by a sudden force coming from the environment. In the combat field of combat, high ... -
The Physico-Chemical Investigation of Interfacial Properties in Natural Fiber/Vinyl Ester Biocomposites
(North Dakota State University, 2012)Bast fibers are one of most widely used types of cellulosic natural fibers. Flax fibers, a specific type of bast fiber, have historically been used as reinforcements in composites because they offer competitive advantages, ... -
Aerosol-Based Ultrafine Material Deposition for Microelectronics
(North Dakota State University, 2012)Aerosol-based direct-write refers to the additive process of printing CAD/CAM features from an apparatus which creates a liquid or solid aerosol beam. Direct-write technologies are poised to become useful tools in the ... -
Fluid Dynamics of Material Micro-Deposition: Capillary-Based Droplet Deposition and Aerosol-Based Direct-Write
(North Dakota State University, 2012)With rapid development of the direct-write technology, in addition to requirement of non-destructive printing, there is a need for non-expensive, robust, and simplified techniques of micro/nano fabrication. This dissertation ... -
Development of Biobased Sandwich Structures for Mass Transit Application
(North Dakota State University, 2012)Efforts to increase the biobased content in sandwich composites are being investigated to reduce the dependence on synthetically produced or mined, energy-intensive materials for numerous composite applications. Vegetable ... -
Optimum Path Tracking of an Independently Steered Four Wheeled Mobile Robot
(North Dakota State University, 2012)This thesis studies the navigational control problem for an independently steered and driven four-wheeled ground robotic vehicle, a subset of the larger problem of controlling self-reconfigurable robotic vehicles. A ... -
Fabrication and Mechanical Characterization of Novel Hybrid Carbon-Fiber/Epoxy Composites Reinforced with Toughening/Self-Repairing Nanofibers at Interfaces
(North Dakota State University, 2012)This research was aimed at fabrication and characterization of novel hybrid carbon-fiber/epoxy composites reinforced with toughening/self-repairing nanofibers at interfaces. For interfacial toughening, continuous electrospun ...