Mechanical Engineering & Applied Mechanics: Recent submissions
Now showing items 121-140 of 143
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Experimental Characterization of Aerosol Flows Through Micro-Capillaries
(North Dakota State University, 2012)Understanding the forces which dictate fluid particle interaction is of high interest in the field of aerosol jet Direct Write (DW). Several methods utilizing shadowgraphy and Mie scattering were used to visualize particle ... -
Interfacial Characterization of Fibrous Composites by Cohesive Zone Method
(North Dakota State University, 2013)This work deals with investigation of the interface between unidirectional E-glass fiber and epoxy matrix composites. The two parts in this work are: 1. A periodically constrained finite element (FE) model built as a ... -
A Survey for Industrial Uses of Distiller's Dried Grains with Solubles (DDGS)
(North Dakota State University, 2012)The increase in demand for corn ethanol has caused an increase in distiller’s dried grains with solubles (DDGS), which is a byproduct of ethanol production. DDGS is a cheap byproduct and is primarily used for livestock ... -
Effects of Green Reinforcement Strategies on Mechanical Properties of High Volume Polymers
(North Dakota State University, 2013)Green reinforcement in polymer systems have shown great promise in reducing cost, negative environmental effects, and dependency on nonrenewable resources. Both natural fillers and composite regrind can increase mechanical ... -
Fine Line Metallization of Silicon Heterojunction Solar Cells via Collimated Aerosol Beam Direct Write
(North Dakota State University, 2012)Solar energy has come to the forefront as a scalable and largely underutilized renewable energy resource. The current cost of solar electricity, namely from photovoltaics, along with other logistics factors, has prevented ... -
A Study on the Processing Characteristics and Reinforcing Potential of Natural Fiber Mats
(North Dakota State University, 2012)Limited information exists regarding the processing parameters and extent of reinforcing potential natural fibers have in polymer matrices. The five natural fiber mats studied were low shive flax, mid shive flax, high shive ... -
A Micromechanical Procedure to Characterize the Effect of Interface in Fibrous Composites and Brain White Matter
(North Dakota State University, 2012)A micromechanics computational algorithm for fibrous composites including fiber, matrix and interface is introduced to study the impact of interface on composite behavior. The domains are modeled by finite elements with ... -
High-Performance Simulations for Atmospheric Pressure Plasma Reactor
(North Dakota State University, 2012)Plasma-assisted processing and deposition of materials is an important component of modern industrial applications, with plasma reactors sharing 30% to 40% of manufacturing steps in microelectronics production [1]. Development ... -
Assessment of Native Aortic Stenosis Hemodynamics and Clinical Evaluation Methods Using Steady State Computational Fluid Dynamics and Computed Tomography-Derived Geometry
(North Dakota State University, 2012)Aortic stenosis is the most common valvular heart disease with a prevalence of 2% among individuals over 65 years and 4% over 80, in developed countries. Accurate valve assessment for intervention timing is critical. Using ... -
Fluid Mechanics of Micro Cold Spray Direct Write Process
(North Dakota State University, 2012)Cold spray, also known as the gas dynamic spray process, was first discovered in the 1980s while doing high speed two phase wind tunnel experiments. The principle underlying this process is that if a metal particle is ... -
Fatigue Analysis of Arteries Using Finite Element Method
(North Dakota State University, 2012)In this thesis, the fatigue response of arteries to four specific physiological conditions representative of various morphological changes that artery undergo during its lifetime, was explored. Single layered nonlinear ... -
Characterization, Long-Term Behavior Evaluation and Thermo-Mechanical Properties of Untreated and Treated Flax Fiber-Reinforced Composites
(North Dakota State University, 2017)In recent years there has been a resurgence of interest in the usage of natural fiber reinforced composites in more advanced structural applications. Consequently, the need for improving their mechanical properties as well ... -
Lubrication and Wear at Metal/HDPE Contacts
(North Dakota State University, 2012)In the thesis lubrication and wear at metal/HDPE contacts was addressed. In particular this type of contact occurs in artificial joint replacements. Wear of HDPE was recognized as a major factor limiting device performance. In ... -
Experimental and Theoretical Studies of Nanostructured Electrodes for Use in Dye-Sensitized Solar Cells
(North Dakota State University, 2017)Among various photovoltaic technologies available in the emerging market, dye-sensitized solar cells (DSSCs) are deemed as an effective, competitive solution to the increasing demand for high-efficiency PV devices. To ... -
Computational Biomechanics of Blast-Induced Traumatic Brain Injury: Role of Loading Directionality, Head Protection, and Blast Flow Mechanics
(North Dakota State University, 2015)In this dissertation, blast-induced traumatic brain injury (bTBI) is studied with respect to the blast wave directionality, mitigation capability of helmet/faceshield, and blast flow mechanics using finite element (FE) ... -
Brain Tissue Mechanical Characterization and Determination of Brain Response under Confined Blasts Explosions
(North Dakota State University, 2015)Mechanical experimental tests including stress relaxation, simple monotonic ramps, and impact loads were performed on porcine brain tissues to investigate the response of the brain under different loading scenarios. Linear ... -
Micromechanical Characterization of Brain White Matter with Bi-Directional Orientation of Axonal Fibers
(North Dakota State University, 2015)Axonal injury within the white matter of human brain and spinal cord has led to several diseases in the Central Nervous System (Karami and Shankar, [1]). Diffuse axonal injury, one of the forms of Traumatic Brain Injury ... -
Experimental and Micromechanical Analysis of Flax and Glass Reinforced Bio-Based Composites
(North Dakota State University, 2015)Two different novel high-functional bio-based resins from Methoxylated Sucrose Soyate Polyol (MSSP) and methacrylated epoxidized sucrose soyate (MAESS) were used as matrices for composites. Vinyl ester reinforced with flax ... -
Breast Cancer Screening in Native American Women at an Urban Minnesota Community Clinic
(North Dakota State University, 2015)The Native American Community Clinic (NACC) in Minneapolis, MN, expressed a need for a breast cancer screening patient education brochure and a policy regarding breast cancer screening, due to the absence of these in their ... -
Microwave Torrefaction of Natural Fibers for Incorporation into Engineering Thermoplastic Biocomposites
(North Dakota State University, 2015)Little work has been done in the area of engineering thermoplastic biocomposites due to the increased processing temperatures which induce degradation of biomass. Torrefaction has been identified as an effective means of ...