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Variable-Impedance-Based Human-Machine Control for Docking of Manufacturing Fixtures
Assembly fixtures that are much smaller than the structure being manufactured, such as an aircraft, must routinely be positioned and docked against the structure on which they act. Here, docking implies physical contact between the fixture and the structure. The major contribution of this thesis is to develop a variable-imp ...
Design of a Pneumatic Tool for Manual Drilling Operations in Confined Spaces
This master’s thesis describes the design process and testing results for a pneumatically actuated, manually-operated tool for confined space drilling operations. The purpose of this device is to back-drill pilot holes inside a commercial airplane wing. It is lightweight, and a “locator pin” enables the operator to align the ...
Prediction of Sudden Cardiac Arrest for Patients with Congestive Heart Failure
Sudden cardiac death (SCD) is responsible for 200,000-450,000 adult deaths each year in the United States. Since sudden cardiac arrest (SCA) can happen unexpectedly, implantable-cardioverter defibrillators (ICDs) are inserted into patients who are at high risk of SCA so that they can provide immediate defibrillation when SCAs ...
Hindfoot Kinematics of Healthy Subjects Using Lateral Wedge Insoles in a Biplane Fluoroscopy System
Lateral wedge insoles (LWIs) are a type of orthosis used to reduce the external knee adduction moment (EKAM), which is associated with the development and progression of tibiofemoral osteoarthritis. However, their effect on kinematics at the hindfoot is unclear. Biplane fluoroscopy was utilized to measure the kinematics of ...
Resistive Embedded Heating for Homogeneous Curing of Composite Damage Repair
The increased use of composite materials in passenger aircrafts has resulted in an escalation of maintenance issues associated with composite structure damage from a variety of causes including impacts during towing, bird strikes and hail. Hence, damage repair has become an important issue in the aerospace industry. This ...
Synthesis and Characterization of Nanostructured Electro-active Materials
With the rapidly increasing demand for better energy sources, material development for alternative energy storage and conversion systems has become extremely important. Among those, lithium ion batteries have achieved huge success in commercial use; however, progress still needs to be made to improve the performance. Toward ...
Coupled diusion and mechanics in battery electrodes
We are living in a world with continuous production and consumption of energy. The energy production in the past decades has started to move away from petrochemical sources toward sustainable sources such as solar, wind and geothermal. Also, the energy consumption is further adapting to the sustainable sources. For instance, ...
The Inverse Jacobian Control Method Applied to a Four Degree of Freedom Confined Space Robot
Robotics and automation of aerospace manufacturing and assembly in confined spaces such as a wing is challenging due to limited tooling access and geometric constraints set by the environment. The emphasis of this thesis is on the control of such robots using the Inverse Jacobian method. The approach is implemented on an ...
In-vitro Clot Formation and Failure
A primary cause of bleeding and mortality after traumatic injury is failure of hemostatic clot formation at wound sites. After trauma, approximately 25-30% of severe injured patients display trauma induced coagulopathy (TIC) which is a multifactorial condition that causes poor clot formation and performance. A decreased level ...
Conceptual Design of a Circulating Fluidized Bed Reactor as a Thermochemical Thermal Energy Storage System for Applications in Concentrated Solar Thermal Power Plants
The use of fossil fuels as an energy resource results in both the introduction of longline infrared-active gases into the atmosphere, and in the depletion of a finite energy resource. Neither of these results make the fossil energy option desirable in the long term. Clean renewable energy sources provide one means of avoiding ...