Department of Mechanical and Aerospace Engineering: Recent submissions
Now showing items 41-60 of 916
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Development of Femtosecond Laser Electronic Excitation Tagging (FLEET) and Femtosecond Two-Photon Absorption Laser Induced Fluorescence (fs-TALIF) Diagnostics for Species Number Density and Velocity Measurements in Arc-Jet Flows
(2023-05-19)**Please note that the full text is embargoed until 05/16/2024** ABSTRACT: Arc-jet flows are the only ground-test facilities that can recreate hypersonic high-enthalpy flight conditions for long durations. Characterizing ... -
STEADY STATE AND TRANSIENT ANALYSIS OF HEAT TRANSFER IN A POROUS FIN WITH RADIALLY OUTWARDS PRESSURE-DRIVEN FLOW
(2023-05-31)**Please note that the full text is embargoed until 05/15/2024** ABSTRACT: Thermal management and energy storage problems often utilize extended surfaces, also known as fins for enhanced heat transfer. Today fins are used ... -
EVALUATION OF SOLDER ALLOYS FOR BGA PACKAGE: A COMPARATIVE RELIABILITY STUDY USING ANSYS COMPUTATIONAL ANALYSIS
(2023-05-22)Temperature cycling failure of solder joints in Ball Grid Array (BGA) packages has become a critical issue in electronic manufacturing. This thesis specifically characterizes three different lead-free solder alloys (Pure ... -
Advancement of an Inhouse Aerospace Vehicle Design Synthesis System through the Introduction of a Novel Database-Knowledgebase System and by Improving the Geometry and Aerothermodynamic Disciplinary Processes
(2023-05-19)Throughout the years of aerospace vehicle design, the process in which a vehicle is designed has drastically improved from being primarily developed through trial and error, to using sophisticated synthesis systems. While ... -
ENHANCING MICROSTRUCTURE, COMPOSITION HOMOGENEITY, AND MECHANICAL PROPERTIES IN LASER POWDER BED FUSED METALLIC ALLOYS: DESIGN, FABRICATION, AND EVALUATION
(2023-05-12)**Please note that the full text is embargoed until 05/12/2024** ABSTRACT: Over the past five decades, Nickel-based and Titanium-based alloys have become increasingly popular materials. As the manufacturing industry for ... -
MECHANICAL AND THERMAL PERFORMANCE OF ADDITIVELY MANUFACTURED DIGITAL MATERIALS
(2023-05-19)**Please note that the full text is embargoed until 05/15/2024** ABSTRACT: Over the past decades, additive manufacturing has become a critical material processing tool. All ranges of materials including polymers, composites, ... -
Fatigue Performance Modeling in Advanced Out-of-Autoclave Composites for Aerospace Applications
(2023-05-04)Increased application of composite materials in the military and civil applications renewed the interest to development of high-fidelity methodologies for predicting their performance characteristics. Besides the traditional ... -
Development of Vortex Box (VBOX) and Vortex Tip (VTIP) Filament Free-Wake Rotor Models
(2023-03-13)Rotor models span from simple static and first order expressions to high fidelity, numerical computations and across the spectrum each model is good for different purposes. The use of models has improved with time and ... -
Thermally charging capacitor: A new protocol to accurately measure the thermoelectric potential
(2022-12-20)Harvesting energy from waste heat would benefit in creating sustainable systems. Specifically, thermoelectric energy conversion can be used for low-grade waste heat recovery. However, the efficiency of conventional solid-state ... -
Numerical analysis of hybrid server immersed in synthetic dielectric fluid
(2022-12-19)In recent years there has been a phenomenal development in cloud computing, networking, virtualization, and storage, which has increased the demand for data centers. With this increase, there is a demand for higher CPU ... -
Robust Synthesis Methods for Cooperative Systems
(2022-12-20)Cooperative systems, like any other dynamic systems, suffer in performance because of uncertainty yet there is an added layer of uncertainty due to the communication among agents. Therefore, analytic solution to these ... -
An Integrated Design Tool for Tow-steered Composite Laminate in Abaqus
(2023-01-02)The material of choice for contemporary aircraft and its component design over the past few decades has shifted more and more toward fiber-reinforced composites. This is mainly due to the improved strength, lightweight, ... -
CONCEPTUAL GAS TURBINE HYBRID ENGINE DESIGN FOR HIGH SPEED RAIL LOCOMOTIVE PROPULSION
(2022-12-16)The modern experimental jet train developed by Bombardier Transportation was designed to partner with the present day electrified Acela high speed trains. The Jet train would provide transportation to areas (Rural etc.), ... -
EFFECT OF CENTRIFUGAL FORCE ON THE LOAD CAPACITY OF THRUST GAS BEARING
(2022-12-12)It has been known for many decades that both rigid and foil thrust bearings are two options in the market for high-speed turbomachinery systems. Their advantages encompass the lower manufacturing cost, the lighter weight, ... -
Characterization of Fatigue Strength of Additively Manufactured Ti-6Al-4V with Recoater Blade Interference Flaws and Residual Stresses Towards an Enhanced Fatigue Substantiation Methodology for Aerospace Structures Applications
(2022-08-17)This research characterized the fatigue strength of additively manufactured (AM) Ti-6Al-4V, through fatigue and static tests conducted using specimens with and without recoater blade interference flaws (RBIF), and thus ... -
MULTI-OBJECTIVE AERO/MECHANICAL DESIGN OPTIMIZATION OF GP TURBINE BLADES PLATFORM CONTOUR USING ADJOINT SOLVER AND IMPACT ON SECONDARY LOSSES
(2022-08-16)Gas Turbines Hot Gas Path components represent the major contribution to generating power in Gas Turbines They are the components that mainly extract power from hot gasses that come out of the combustion Chamber (Combustor). ... -
Reactive Motion Planning of Autonomous Vehicles in 3-Dimensional Environments using Collision and Rendezvous Cones
(2022-08-15)This dissertation presents a collision cone/rendezvous cone-based approach for reactive motion planning in three-dimensional dynamic environments. Collision avoidance is fundamental to robot motion planning. In dynamic ... -
Fixed Wing Aircraft Collision Avoidance Using Collision Cone Theory
(2022-08-12)This thesis develops the guidance and control components of an aircraft collision avoidance system, using a collision cone-based approach. These guidance and control laws are developed by considering the nonlinear relative ... -
CHARACTERIZATION AND ENHANCEMENT OF MECHANICAL PROPERTIES IN THERMOPLASTIC FFF PARTS USING IN-SITU ANNEALING
(2021-08-13)Fused filament fabrication is one of the most common and widely used additive manufacturing techniques. Owing to its ease of use, availability and cheap feedstock it provides a significant advantage over other AM techniques. ... -
FINITE ELEMENT BASED METHODOLOGY TO PREDICT FATIGUE COMPRESSION FAILURE IN COMPOSITE BASED ON FIBER KINKING DAMAGE MODEL
(2020-09-04)Advanced polymer matrix composites are widely used in designing high-performance and lightweight spacecraft, rotorcraft, and automotive structures, due to its superior performance such as specific stiffness, specific ...