Browsing Dissertations & Theses by Title
Now showing items 881-899 of 899
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Uncertainty Characterization Of Orbital Debris
(Aerospace Engineering, 2007-08-23)The increase of orbital debris in the low Earth orbit is a concern for the space industry. Spacecraft and satellites are at risk of collision with orbital debris. Collisions can damage sensitive components or result in ... -
UNCERTAINTY PROPAGATION, CONTROL, AND ESTIMATION OF STOCHASTIC DYNAMIC SYSTEMS USING GENERALIZED POLYNOMIAL CHAOS EXPANSION
(2021-08-10)In recent years, uncertainty propagation has emerged as an important research area in the field of dynamical systems. The growing interest in this area arises out of the need to develop computationally efficient approaches ... -
UNDERDAMPED MOTION OF A MICROBEAD IN OPTICAL TWEEZER AND ITS RELATIONSHIP WITH THE REYNOLDS NUMBER
(2018-12-06)Optical tweezers can hold and manipulate microscopic objects with the use of a highly focused laser beam. The radiation pressure acting on the object is generally in the range of piconewtons and can be attractive or repulsive ... -
Understanding the Alchemilla leaf and its hydrophobicity
(2016-08-26)The Alchemilla leaf has been well known and studied frequently for its hydrophobic ability. However, much difficulty has been met in replicating its microstructure for hydrophobic applications. Also, not much experimental ... -
A Unified Analysis Of Stiffener Reinforced Composite Beams With Arbitrary Cross-section
(Mechanical Engineering, 2010-03-03)A number of methods are available to analyze the laminated composite beams using smear property of laminate stiffness ignoring unsymmetrical behavior of laminates. Some include their effect of laminate but did not include ... -
Unsteady Thrust Measurement Techniques For Pulse Detonation Engines
(Aerospace Engineering, 2014-07-14)Thrust is a critical performance parameter and its correct determination is necessary to characterize an engine. Many conventional thrust measurement techniques prevail. However, further developments are required for correct ... -
Use Of A Windbreaker To Mitigate High Speed Wind Loading On A Modular Data Center
The data centers that are located in open regions are subjected to various environmental risks. Earthquakes and very strong winds have the greatest effect on the structural integrity of the data centers. As the wind blows ... -
Use Of Nanoparticle Enhanced Phase Change Material (NEPCM) For Data Center Cooling Application
(Mechanical Engineering, 2014-12)This study attempts to take advantage of nanoparticles with high thermal conductivity and the latent heat capacity of phase change materials together to enhance heat transfer rate. The main difficulty in using PCM for ... -
Using GPU-based Computing To Accelerate Finite Element Problems
(Aerospace Engineering, 2012-07-25)Historically Graphics Processing Units (GPU) have been used for offloading graphical visualization and made popular in use for video games, but with the development of NVIDIA's CUDA architecture and programing language ... -
USING NUMERICAL MODELING TO DETERMINE VISCOUS LOSSES WITHIN HELIUM TURBOMACHINERY
(2020-12-07)As the consumption of energy has increased relentlessly over the last few decades, the need for reliable clean energy generation has increased as well. Currently, nuclear power is the only method capable of providing a ... -
Utilization Of Microencapsulated Phase Change Material For The Optimization Of Evaporative Cooling Technology
(Mechanical Engineering, 2013-07-22)IT equipments are the essential facet of most institutional operations of the advanced world. Modern IT equipments are far more vigorous than older equipments. With increasing density of array of servers and growth of ... -
Utilization Of Molten Nitrate Salt Nanomaterials For Heat Capacity Enhancement In Solar Power Applications
(Mechanical Engineering, 2013-07-22)Concentrated solar power (CSP) system use general thermodynamic cycle to produce electricity and thus the system efficiency is mainly determined by the working temperature of heat transfer fluid (HTF). Organic-based HTFs ... -
Vehicle Suspension Optimization For Stochastic Inputs
(Mechanical Engineering, 2012-04-11)In the present thesis, a simulation based numerical method has been proposed for optimization of vehicle suspension system for stochastic inputs from random road surface profiles. Road surfaces are classified in based upon ... -
Viscoelastic Effects On A Polyetherimide Cylinder With Constant Radial Deformation
The relaxation of an axisymmetric radially crimped joint is analyzed with the inner component being formed from the engineering grade polymer ULTEM<sup>TM</sup> 1000 polyetherimide. Creep and Relaxation tests were performed ... -
Viscoplastic Finite-element Simulation To Predict The Solder Joint Fatigue Life Of Different Flash Memory Die Stacking Architectures
(Mechanical Engineering, 2007-08-23)This thesis focuses on the viscoplastic finite-element simulation to predict the solder joint fatigue life of different die stacking architectures for flash memory products. Four different stacked package architectures ... -
Visualizing The Flow Induced By An Air Curtain Over A Mannequin Using Stereo Particle Image Velocimetry
(Mechanical Engineering, 2009-09-16)Air curtains find widespread applications in today's world, such as in malls, supermarkets, airports, cold storage, etc., to allow easy pedestrian movement between two different environments. There is interest in understanding ... -
Wind Field Estimation And Its Utilization In Trajectory And Input Prediction
(Aerospace Engineering, 2014-12)This dissertation work develops a method for onboard estimation of wind field with spatial and temporal variation based on local wind vector estimation and/or measurements from multiple aircraft flying in the same airspace. ... -
Wireless Antenna Sensors for Boiler Condition Monitoring
(2018-09-10)Structural Health Monitoring (SHM) is a vital technology that implements real-time condition monitoring or damage detection mechanisms for the safety assurance of structural systems such as power stations, aircrafts, ... -
Woods tire model
(2018-08-24)The performance of a racecar in a maneuver is almost totally determined by the characteristics of the tires and the suspension setup. If the suspension is properly tuned for the maneuver, then the limiting factor is the ...