Materials Science and Engineering Commons^™

Enhanced Presentation Of Tomographic Data, Carmen Watts Clayton, Bernice E. Mills, George Buffleben, Thien Vu-Nguyen

STAR Program Research Presentations

Solid materials can now be viewed non-destructively with x-rays by tomography; a technique for taking many 2D images of an object at many angles and reconstructing the images into a 3D data cube. The data is next rendered into 2D or 3D still images or movies. By nature, x-ray tomography yields a very large amount of data in three dimensions. Effectively displaying this data to an audience is a challenge.

In this work techniques are explored to improve the presentation methods of movies of both 2D and 3D tomographic data for visual appeal and correct perspective. Finding the optimal ways …

On Thermal Aging Prevention In Polymer Core Composite Conductor Rods, Joe D. Hoffman

Electronic Theses and Dissertations

Increased energy usage in the United States and worldwide is driving the demand for new technologies to transmit electrical power in greater quantities and with reliable, safe, and more efficient methods. One recent innovation is to replace the standard Aluminum Conductor Steel Reinforced electrical transmission conductor with a new conductor design that utilizes a fiber reinforced polymer core rod to support a fully annealed aluminum conductor. This new technology that includes a hybrid carbon fiber/epoxy and glass fiber/epoxy support core allows for better efficiency and for greater current to be transmitted in the same size and weight line. These new …

Shotcrete Education And Nozzlemen Certification In North America, Marc Jolin, J. Nehasil, C. Hanskat

Shotcrete for Underground Support XII

No abstract provided.

Interaction Between The Shotcrete Outer Shell And The Sealing System, Dietmar Mähner

Shotcrete for Underground Support XII

No abstract provided.

Shotcrete – Sustainable Design For Underground Structures Facing Challenging Ground Conditions, Johannes Benedikt, Matthias Beisler

Shotcrete for Underground Support XII

No abstract provided.

Investigation Of The Interaction Between Sheet Membranes, Geotextile And Sprayed Concrete In Tunnelling, Stefan Lorenz, Robert Galler

Shotcrete for Underground Support XII

No abstract provided.

Fibre Reinforced Spray Concrete: Minimum Performance Requirement To Meet Safety Needs, Benoit De Rivaz

Shotcrete for Underground Support XII

No abstract provided.

A Case Study On The Impact Of Pozzolanic-Based Rheology Control Agent On Wet-Mix Shotcrete Performance In Underground Applications, Ezgi Yurdakul, Klaus-Alexander Rieder, Bernardo Vicencio, Gerardo Staforelli, Diego Granell

Shotcrete for Underground Support XII

No abstract provided.

A Case Study Of Tunnel Instability In Weakness Zone Containing Swelling Clay, Dawei Mao, Bjørn Nilsen, Shurong Feng, Haibin Zhao, Ming Lu

Shotcrete for Underground Support XII

No abstract provided.

Precipitations In The Tunnel Drainage System – Optimized Shotcrete Mix-Design, Maria Thurmann, Markus Astner, Andreas Saxer, Wolfgang Kusterle

Shotcrete for Underground Support XII

No abstract provided.

A Case Study Of Tunnel Instability In Weakness Zone Containing Swelling Clay, Dawei Mao, Bjørn Nilsen, Shurong Feng, Haibin Zhao, Ming Lu

Shotcrete for Underground Support XII

No abstract provided.

Beautiful Forms And Compositions Are Not Made By Chance: Exploring The Efficacy Of Portable X-Ray Fluorescence To Sort And Source English Lead Glazed Ceramics, Steven J. Sarich

Dissertations, Master's Theses and Master's Reports - Open

Advances in portable X-ray fluorescence (pXRF) technology have made it a viable option for the non-destructive exploration of the underlying chemical composition of ceramic artifacts for the purposes of classification. However, because the literature regarding the use of this instrument on historic artifacts is limited, it is necessary to begin with a broad scale exploratory assessment that might act as a jumping off point for future studies on this topic. Toward that end, this research uses a collection of British and Continental European ceramics ranging from 1650-1920, owned and curated by the Chipstone Foundation in Fox Point, WI, to explore …

A Transdisciplinary Approach To Determining The Provenience Of A Distorted, Pre-Columbian Skull Recovered In Rural Idaho, Jennifer K. Watkins, Gordon A. Alanko, Samantha H. Blatt, Cynthia A. Bradbury, Matthew J. Kohn, Marion Lytle, Deborah Lacroix, Joanna Taylor, John Dudgeon, Rebecca E. Hazard, Erin O’Leary-Jepsen, Darryl P. Butt

College of Engineering Presentations

Transdisciplinary research involves cooperation, exchange of information, sharing of resources and integration of disciplines to achieve a common scientific goal. In this study, collaborators utilized tools and knowledge of materials science, anthropology, archaeology, geosciences and biology in an attempt to determine the provenience of skeletal remains of unknown origin. The exchange of ideas and skills along with the crossing of disciplines in this study sucessfully allowed the incorporation of expertise from many team members. This transdisciplinary approach to research provided a more comprehensive and detailed analysis than any one field alone could provide. An archaeological assessment of a human skull …

The Performance Of Concrete Exposed To Marine Environments: Predictive Modelling And Use Of Laboratory/On Site Test Methods, S.V. Nanukuttan, P.A.M. Basheer, W.J. Mccarter, L. Tang, Niall Holmes, T.M. Chrisp, G. Starrs

Articles

Premature deterioration of reinforced concrete structures due to lack of durability and subsequent poor state of their health, has led to a significant part of the construction budget being spent on repair and rehabilitation works. As a direct consequence, asset owners are often forced to take decisions to repair and maintain existing ailing infrastructure, as opposed to investing in new ones.

Cathodic Protection For Reinforced Concrete Structures: Present Practice And Moves Toward Using Renewable Energy, Aimee Byrne, Niall Holmes, Brian Norton

Articles

Abstract: Cathodic protection (CP) limits the corrosion of a metal by making it the cathode of an electrochemical cell. This is achieved either by (i) using more active sacrificial anodes to create a driving current, or (ii) using inert anodes and impressing an external direct current (DC). This paper presents up-to-date CP systems available for reinforced concrete, particularly Impressed Current Cathodic Protection (ICCP) and self-sufficient or renewable energy systems. The potential for overcoming the mismatch in energy provision from renewable sources (intermittent current) with energy needs for CP (constant current) is discussed by exploring novel designs and examining current requirments.

Performance Of Shotcrete Surface Support Following Dynamic Loading Of Mining Excavations, C. Drover, E. Villaescusa

Shotcrete for Underground Support XII

No abstract provided.

Investigation And Rehabilitation Of Lining Imperfections And Cracks In An Operating Railway Tunnel, J.S. Yang, J.Y. Fu

Shotcrete for Underground Support XII

No abstract provided.

Characterization Of Dimethyl Sulfoxide-Treated Wool And Enhancement Of Reactive Wool Dyeing In Non-Aqueous Medium, Luyi Chen, Bijia Wang, Jiangang Chen, Xinhui Ruan, Yiqi Yang

Department of Textiles, Merchandising and Fashion Design: Faculty Publications

Wool pretreated with dimethyl sulfoxide (DMSO) was characterized and its dyeing behavior in non-aqueous green solvents was investigated. Reactive dyeing of wool in deep shades is challenging because the mandatory alkaline aftertreatment to match the fastness of mordant dyes inevitably causes damage to wool keratin. The current study showed that the colorfastness-integrity dilemma could be solved by replacing water with organic solvents as the dyeing medium. Covalent fixation is predominantly favored in solvent dyeing so that excellent colorfastness is achievable at any given shade without alkali aftertreatment. Compared with aqueous dyeing, solvent dyeing was found to give 30% higher covalent …

Methods Of Extrusion On Demand For High Solids Loading Ceramic Paste In Freeform Extrusion Fabrication, Wenbin Li, Amir Ghazanfari, Ming Leu, Robert Landers

Faculty Publications, Mechanical Engineering

Fabrication of highly dense parts with complex geometry by paste-extrusion-based solid freeform fabrication processes requires a precise control of the extrusion flow rate to dispense material on demand, which is often referred as Extrusion-On-Demand (EOD). The extrusion process for aqueous ceramic pastes is complex and difficult to control due to their non-Newtonian behavior, compressibility and inhomogeneity. In this study, three methods of EOD (based on ram extruder, needle valve, and auger valve) are introduced and investigated for the extrusion of high solids loading (i.e., >50%, volumetric) aqueous alumina paste. Optimal extrusion process parameters for these methods are determined through printing …

A New Approach To Digital Generation Of Spherical Void Phase Porous Media Microstructures, Nolan J. Dyck, Anthony G. Straatman

Mechanical and Materials Engineering Publications

No abstract provided.