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Solid State Diffusion Bonding Of Zrc To Zr-Based Alloys, Andrew Gillen, Lyndon Edwards, Daniel Riley, George Franks May 2012

Solid State Diffusion Bonding Of Zrc To Zr-Based Alloys, Andrew Gillen, Lyndon Edwards, Daniel Riley, George Franks

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Joining Of Ultra-High Temperature Ceramics, Laura Silvestroni, Diletta Sciti, Laura Esposito, Andreas Glaeser May 2012

Joining Of Ultra-High Temperature Ceramics, Laura Silvestroni, Diletta Sciti, Laura Esposito, Andreas Glaeser

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Fusion Welding Of Zrb2-Based Ceramics, H.J. Brown, W.G. Fahrenholtz, G.E. Hilmas May 2012

Fusion Welding Of Zrb2-Based Ceramics, H.J. Brown, W.G. Fahrenholtz, G.E. Hilmas

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Low Temperature Synthesis And Sintering Of Mechanically Activated Zrb2 Powders, Mustafa Tuncer May 2012

Low Temperature Synthesis And Sintering Of Mechanically Activated Zrb2 Powders, Mustafa Tuncer

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


In-Situ Imaging And Strain Determination During Fracture In A Sic/Sic Ceramic Matrix Composite, Joaquin Ramirez, F. Stoltzenburg, K.T. Faber, J. Almer, D. Singh, J. Routbort May 2012

In-Situ Imaging And Strain Determination During Fracture In A Sic/Sic Ceramic Matrix Composite, Joaquin Ramirez, F. Stoltzenburg, K.T. Faber, J. Almer, D. Singh, J. Routbort

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Microstructure Formation Pathways In Tantalum Carbides, Gregory Thompson, Robert Morris, Billie Wang, Bardford Schulz, Nick Deleon, Christopher Weinberger, Daniel Butts, Stephan Diepetrio, Lawrence Matson May 2012

Microstructure Formation Pathways In Tantalum Carbides, Gregory Thompson, Robert Morris, Billie Wang, Bardford Schulz, Nick Deleon, Christopher Weinberger, Daniel Butts, Stephan Diepetrio, Lawrence Matson

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Program, Engineering Conferences International May 2012

Program, Engineering Conferences International

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


First Principles Investigation On Chemical Bonding Of Transition Metal Borides And Carbides, Junshan Wang, Yanchun Zhou May 2012

First Principles Investigation On Chemical Bonding Of Transition Metal Borides And Carbides, Junshan Wang, Yanchun Zhou

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Fabrication Of Tac-Hfc Ceramics For Ultra-High Temperature Applications, Omar Cedillos, Doni Jayaseelan, Bill Lee May 2012

Fabrication Of Tac-Hfc Ceramics For Ultra-High Temperature Applications, Omar Cedillos, Doni Jayaseelan, Bill Lee

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Poster 4. Microstructure And Mechanical Properties Of Zrb2-Nb Composites, Sun Xin May 2012

Poster 4. Microstructure And Mechanical Properties Of Zrb2-Nb Composites, Sun Xin

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Densification And High Temperature Properties Of Zrb2 And Tib2-Based Composites, Neha Gupta, G.B. Raju, Bikramjit Basu May 2012

Densification And High Temperature Properties Of Zrb2 And Tib2-Based Composites, Neha Gupta, G.B. Raju, Bikramjit Basu

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Microstructure, Tribological Response, And Mechanical Properties Of Fiber Bonded Silicon Carbide Ceramics, M.C. Vera, J. Ramirez, J. Martinez, M. Singh May 2012

Microstructure, Tribological Response, And Mechanical Properties Of Fiber Bonded Silicon Carbide Ceramics, M.C. Vera, J. Ramirez, J. Martinez, M. Singh

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Elevated Temperature Deformation Mechanisms In Ta2c, Nicholas De Leon, Billie Wang, Gregory Thompson, Christopher Weinberger May 2012

Elevated Temperature Deformation Mechanisms In Ta2c, Nicholas De Leon, Billie Wang, Gregory Thompson, Christopher Weinberger

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Effects Of Carbon On The Processing And Thermal Properties Of Hot Pressed Zrb2, Greg Harrington, Greg Hilmas, William Fahrenholtz May 2012

Effects Of Carbon On The Processing And Thermal Properties Of Hot Pressed Zrb2, Greg Harrington, Greg Hilmas, William Fahrenholtz

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Ultra High Temperature Mechanical Testing Of Zrb2 Ceramics, Eric Neuman, Gregory Hilmas, William Fahrenholtz May 2012

Ultra High Temperature Mechanical Testing Of Zrb2 Ceramics, Eric Neuman, Gregory Hilmas, William Fahrenholtz

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Characterization Of Mechanically Activated Zirconium Diboride (Zrb2) Powders, Mustafa Tuncer May 2012

Characterization Of Mechanically Activated Zirconium Diboride (Zrb2) Powders, Mustafa Tuncer

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Ultra-High Temperature Ceramics Research At Afrl, M.K. Cinibulk, T.A. Parthasarathy May 2012

Ultra-High Temperature Ceramics Research At Afrl, M.K. Cinibulk, T.A. Parthasarathy

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Sintering And Densification Of Uhtcs, Diletta Sciti, Laura Silvestroni, Stefano Guicciardi, Frederic Monteverde May 2012

Sintering And Densification Of Uhtcs, Diletta Sciti, Laura Silvestroni, Stefano Guicciardi, Frederic Monteverde

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Sol-Gel Synthesis And Characterization Of Hfb2 Powders, Saranya Venugopal, Anish Paul, Jon Binner, Bala Vaidhyanathan, Peter Brown May 2012

Sol-Gel Synthesis And Characterization Of Hfb2 Powders, Saranya Venugopal, Anish Paul, Jon Binner, Bala Vaidhyanathan, Peter Brown

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Fabrication, Properties, And Arc-Jet Testing Of Zrb2-Based Composites Containing Short Sic Fibers, Frederic Monteverde, Diletta Sciti, Laura Silvestroni, Davide Alfano, Raffaele Savino May 2012

Fabrication, Properties, And Arc-Jet Testing Of Zrb2-Based Composites Containing Short Sic Fibers, Frederic Monteverde, Diletta Sciti, Laura Silvestroni, Davide Alfano, Raffaele Savino

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Interfacial Coatings On Carbon Fibers, N. Baklanova, T. Zima, N. Morozova, I. Igumenov May 2012

Interfacial Coatings On Carbon Fibers, N. Baklanova, T. Zima, N. Morozova, I. Igumenov

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


Ultra-High Temperature Ceramics: Historic Perspectives And Recent Progress, W.G. Fahrenholtz, G.E. Hilmas May 2012

Ultra-High Temperature Ceramics: Historic Perspectives And Recent Progress, W.G. Fahrenholtz, G.E. Hilmas

Ultra-High Temperature Ceramics: Materials For Extreme Environmental Applications II

No abstract provided.


A Method For Exploring Optimization Formulation Space In Conceptual Design, Shane Keawe Curtis May 2012

A Method For Exploring Optimization Formulation Space In Conceptual Design, Shane Keawe Curtis

Theses and Dissertations

Formulation space exploration is a new strategy for multiobjective optimization that facilitates both divergent searching and convergent optimization during the early stages of design. The formulation space is the union of all variable and design objective spaces identified by the designer as being valid and pragmatic problem formulations. By extending a computational search into the formulation space, the solution to an optimization problem is no longer predefined by any single problem formulation, as it is with traditional optimization methods. Instead, a designer is free to change, modify, and update design objectives, variables, and constraints and explore design alternatives without requiring …


Enhancing The Interdisciplinary Curriculum In Cybersecurity By Engaging High-Impact Educational Practices, Li-Chiou Chen, Andreea Cotoranu May 2012

Enhancing The Interdisciplinary Curriculum In Cybersecurity By Engaging High-Impact Educational Practices, Li-Chiou Chen, Andreea Cotoranu

Cornerstone 3 Reports : Interdisciplinary Informatics

No abstract provided.


New Algorithms For High-Throughput Decoding With Low-Density Parity-Check Codes Using Fixed-Point Simd Processors, Jawone Kennedy May 2012

New Algorithms For High-Throughput Decoding With Low-Density Parity-Check Codes Using Fixed-Point Simd Processors, Jawone Kennedy

All Dissertations

Most digital signal processors contain one or more functional units with a single-instruction, multiple-data architecture that supports saturating fixed-point arithmetic with two or more options for the arithmetic precision. The processors designed for the highest performance contain many such functional units connected through an on-chip network. The selection of the arithmetic precision provides a trade-off between the task-level throughput and the quality of the output of many signal-processing algorithms, and utilization of the interconnection network during execution of the algorithm introduces a latency that can also limit the algorithm's throughput.
In this dissertation, we consider the turbo-decoding message-passing algorithm for …


A Comprehensive Human Factors Analysis Of Off-Duty Motor Vehicle Crashes In The United States Military, Rebecca Iden May 2012

A Comprehensive Human Factors Analysis Of Off-Duty Motor Vehicle Crashes In The United States Military, Rebecca Iden

All Dissertations

Researchers have always had great interest in traffic safety and the phenomenon of motor vehicle crashes (MVCs). Though scores of service members are severely injured or killed in off-duty MVCs each year, few studies have addressed the MVC phenomenon within the military population and none have conducted a comprehensive evaluation of the causal factors associated with MVCs involving military personnel.
The main purpose of this dissertation was to gain a greater understanding of the causal factors associated with serious and fatal off-duty personal MVCs for military service members with the ultimate goal of preventing future losses. The HFACS-MVC framework was …


Plasma-Assisted Molecular Beam Epitaxial Growth Of Indium Nitride For Future Device Fabrication, Steven Paul Minor May 2012

Plasma-Assisted Molecular Beam Epitaxial Growth Of Indium Nitride For Future Device Fabrication, Steven Paul Minor

Graduate Theses and Dissertations

The need for energy conservation has heightened the search for new materials that can reduce energy consumption or produce energy by the means of photovoltaic cells. III-nitride alloys show promise for these applications due to their generally good transport properties and ability to withstand high power applications. Along with these, this family of semiconductor alloys has a direct bandgap energy range (0.7-6.2 eV) which spans the entire visible spectrum and encompasses a large portion of the available solar spectrum. Of the three root III-nitride semiconductors, AlN, GaN, and InN, InN has only recently become attainable epitaxially with qualities good enough …


Proceedings, Msvscc 2012, Old Dominion University, Department Of Modeling, Simulation & Visualization Engineering, Old Dominion University, Virginia Modeling, Analysis & Simulation Center Apr 2012

Proceedings, Msvscc 2012, Old Dominion University, Department Of Modeling, Simulation & Visualization Engineering, Old Dominion University, Virginia Modeling, Analysis & Simulation Center

Modeling, Simulation and Visualization Student Capstone Conference

Proceedings of the 6th Annual Modeling, Simulation & Visualization Student Capstone Conference held on April 19, 2012 at VMASC in Suffolk, Virginia.


Cavitation Of A Water Jet In Water, Michael Marshall Wright Apr 2012

Cavitation Of A Water Jet In Water, Michael Marshall Wright

Theses and Dissertations

Cavitation is a phenomenon that occurs in liquids when the pressure drops below the vapor pressure of the liquid. Previous research has verified that cavitation bubble collapse is a dynamic and destructive process. An understanding of the behavior of cavitation is necessary to implement this destructive mechanism from an axisymmetric jet for underwater material removal. This work investigates the influence of jet pressure and nozzle diameter on the behavior of a cloud of cavitation bubbles generated by a submerged high-pressure water jet. First, this investigation is put into context with a condensed historical background of cavitation research. Second, a description …


Getting It Right The First Time: Predicted Performance Guarantees From The Analysis Of Emergent Behavior In Autonomous And Semi-Autonomous Systems, Ronald C. Arkin, Damian M. Lyons, Shu Jiang, Prem Nirmal, Munzir Zafar Apr 2012

Getting It Right The First Time: Predicted Performance Guarantees From The Analysis Of Emergent Behavior In Autonomous And Semi-Autonomous Systems, Ronald C. Arkin, Damian M. Lyons, Shu Jiang, Prem Nirmal, Munzir Zafar

Faculty Publications

A crucially important aspect for mission-critical robotic operations is ensuring as best as possible that an autonomous system be able to complete its task. In a project for the Defense Threat Reduction Agency (DTRA) we are developing methods to provide such guidance, specifically for counter-Weapons of Mass Destruction (C-WMD) missions. In this paper, we describe the scenarios under consideration, the performance measures and metrics being developed, and an outline of the mechanisms for providing performance guarantees.