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  • All fields: Mechanical Engineering
(727 results)



Display: 20

    • The Development and Evaluation of the knife Finite Element

    • The Development and Evaluation of the knife Finite Element

    • Knife, Finite, Element, Hexahedral, Mesh, Knives, Stiffness, Matrix,

    • This thesis presents the development and evaluation of the knife finite element which is a degenerate case of a hexahedral element. The knife connectivity is an artifact of automatic all-hexahedral mesh generators. Currently, knives are propagated...
    • ETD
    • An Investigation of Compliant Over-running Ratchet and Pawl Clutches

    • An Investigation of Compliant Over-running Ratchet and Pawl Clutches

    • compliant mechanism, clutch, ratchet, over-running ratchet, pawl clutch

    • This thesis proposes that compliant mechanism theory can be used to design over-running ratchet and pawl clutches with reduced part count, lower assembly and manufacturing time while maintaining functionality. An extension of the theory to the...
    • ETD
    • Analog Feedback Control of an Active Sound Transmission Control Module

    • Analog Feedback Control of an Active Sound Transmission Control Module

    • active noise control, sound transmission, active structural control, noise, barrier, transmission loss, panel, wall, single-panel, double-panel, analog, feedback

    • This thesis provides analytical and experimental proof-of-concept for a new feedback-controlled sound transmission control module for use in an active segmented partition (ASP) array. The objective of such a module is to provide high transmission...
    • ETD
    • Nesting Automated Design Modules In An Interconnected Framework

    • Nesting Automated Design Modules In An Interconnected Framework

    • Product Design Generator, Automated Design Framework, Computer Aided Engineering

    • This thesis seeks to extend the PDG methodology by developing a generalized formal method for nesting PDGs in an interconnected system. A procedure for decomposing an individual PDG into reusable modules will be defined and a software architecture...
    • ETD
    • Mechanical Properties and MEMS Applications of Carbon-Infiltrated Carbon Nanotube Forests

    • Mechanical Properties and MEMS Applications of Carbon-Infiltrated Carbon Nanotube Forests

    • Carbon nanotubes, CNTs, compliant mechanisms, microelectromechanical systems, MEMS, material properties, modulus, tensile strength, microbiology, cell restraints, torsion, LEMs, lamina emergent mechanisms, design, Walter C. Fazio.

    • This work explores the use of carbon-infiltrated carbon nanotube (CI-CNT) forests as a material for fabricating compliant MEMS devices. The impacts of iron catalyst layer thickness and carbon infiltration time are examined. An iron layer of 7nm or...
    • ETD
    • Microscopic Light Field Particle Image Velocimetry

    • Microscopic Light Field Particle Image Velocimetry

    • micro PIV, microPIV, particle image velocimetry, light field, synthetic aperture, SAPIV, microscopic channel flow, bryce mcewen, tadd truscott, jesse belden, lightfield microscope

    • This work presents the development and analysis of a system that combines the concepts of light field microscopy and particle image velocimetry (PIV) to measure three-dimensional velocities within a microvolume. Rectanglar microchannels were...
    • ETD
    • Numerical Investigation of Internal Wave-Vortex Dipole Interactions

    • Numerical Investigation of Internal Wave-Vortex Dipole Interactions

    • internal waves, Lamb-Chaplygin, vortex dipole, interaction, ray tracing, focusing, defocusing,, critical level, turning point, wave capture, wave trapping

    • Three-dimensional linear ray theory is used to investigate internal waves interacting with a Lamb-Chaplygin pancake vortex dipole. These interactions involve waves propagating in the same (co-propagating) and opposite (counter-propagating)...
    • ETD
    • Development of a Five-Axis Machining Algorithm in Flat End Mill Roughing

    • Development of a Five-Axis Machining Algorithm in Flat End Mill Roughing

    • curvature matched machining, rough machining, five axis machining, flat end mill, machining, CNC machining

    • To further the research done in machining complex surfaces, Jensen [1993] developed an algorithm that matches the normal curvature at a point along the surface with the resultant radius formed by tilting a standard flat end mill. The algorithm...
    • ETD
    • Robust Parameterization Schema for CAx Master Models

    • Robust Parameterization Schema for CAx Master Models

    • CAD, master model, parametrics

    • Today’s engineering companies rely heavily on an engineer’s ability to use computers to analyze and optimize designs. With this use of computers in the design process, products undergo multiple design iterations between preliminary concept and...
    • ETD
    • Recognizing Parametric Geometry from Topology Optimization Results

    • Recognizing Parametric Geometry from Topology Optimization Results

    • Shane H. Larsen, topology optimization, shape templates, shape recognition

    • Topology Optimization has been proven to be a useful tool in discovering non-intuitive optimal designs subject to certain design constraints. The results of Topology Optimization are either represented as a tessellation object composed of thousands...
    • ETD
    • On-Chip Actuation of Compliant Bistable Micro-Mechanisms

    • On-Chip Actuation of Compliant Bistable Micro-Mechanisms

    • compliant mechanism, bistable, micro, MEMS, thermal actuator

    • Two compliant bistable micro-mechanisms have been developed which can be switched in either direction using on-chip thermal actuation. The energy storage and bistable behavior of the mechanisms are achieved through the elastic deflection of...
    • ETD

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