Browsing by Author "Marghitu, Dan B."

Now showing items 1-12 of 12

An Analysis of the Multi-scale Structure of Rough Surfaces

Zhang, Xiaohan, Jr. (2014-12-04)

Even with the various surface finishing techniques, all surfaces are rough with different structures and geometric characteristics over multiple scales. The roughness impacts significantly the friction, wear, and surface ...

Analytical and experimental analysis of the permanent deformation after collisions

Ghaednia, Hamid (2017-08-03)

This work studied the normal and oblique impact of elastic-plastic metals. The focus of this work was to investigate the relations between the permanent deformations after the collisions and the motion of the impacting ...

Bipedal Impact with Granular Matter

Banu, Eliza (2014-11-06)

Impact with granular matter has been of great interest to researchers for decades, mainly because the material, as a conglomeration of discrete solids, behaves as a fluid until a solid like behavior becomes established. ...

Cavitation Studies of Lumbar Zygapophysial Joints using Vibration Measurements

Bora, Preetam (2011-04-15)

The purpose of this research project was to locate the level of cavitation in zygapophysial (Z) joints in the lumbar spine (L1/L2-L5/S1) and the sacroiliac joints (SIJs) during side-posture positioning and spinal manipulative ...

The Effect of Sand on the Wear of Anodized Aluminum

Pope, Sara (2014-12-04)

Sand can cause excessive wear in mechanical systems, especially when the motion is frequent and small in amplitude. A modified block-on-flat wear test of anodized aluminum on hard coat anodized aluminum was used to study ...

Evaluation of Beam Load Cell Use for Base Reaction Force Collision Detection on Industrial Robots

Williams, Robert (2014-10-10)

This thesis evaluates the ability of four beam load cells placed under the base of an industrial robot to accurately estimate robot link parameters and detect collision. This setup can be a cheaper option than using ...

High Speed Videographic Quick Stop Device for Orthogonal Machining

Wortman, Chase (2013-12-04)

Advances in digital high speed video acquisition make it possible to create a fully integrated virtual quick stop device to observe the orthogonal metal cutting process in real time. This research aims to provide additional ...

Low Speed Orthogonal Hot Machining With a Virtual Quick Stop Device

Patillo, Jonathan Maxmillian Edward (2016-05-06)

Cocquilhat first documented (1851) how heat in a tool shortens the life of the tool. Research since his time has generally concluded that the tool gives up a relatively higher percentage of its “cold hardness and toughness” ...

Photovoltaic effect and quadratic electro-optic modulation in specific iodine-doped nonconjugated conductive polymers

Jaju, Sumeeth (2014-10-10)

In this thesis, photovoltaic effect and quadratic electro-optic modulation in specific iodine-doped nonconjugated conductive polymers (NCP) have been reported. Exceptionally large quadratic electro-optic effects in specific ...

Relative Positioning of Unmanned Ground Vehicles Using Ultrasonic Sensors

Henderson, Harold (2008-05-15)

In this thesis, a Global Positioning System/Inertial Navigation System (GPS/INS) is developed and applied to a tracked Unmanned Ground Vehicle (UGV) to provide estimates of position, heading, and velocity. The navigation ...

Submerged Reverse Osmosis Desalination

Ragan, Joseph (2014-08-01)

Over the past three decades, advances is reverse osmosis technology have led to dramatic increases in the number and capacities of reverse osmosis desalination plants. One key component in all efficient traditional reverse ...

Symbolic Computation of Quantities Associated with Time-Periodic Dynamical Systems

Kirkland, W. Grant (2015-05-07)

Many dynamical systems can be modeled by a set of linear/nonlinear ordinary differential equations with periodic time-varying coefficients. The state transition matrix S(t,a) associated with the linear part of the equation ...