Engineering Commons^™

Ceas E-News 12.16.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

CEAS students and RoboBronco join the cast of feature-film Cherry

Ceas E-News 12.02.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Five honored with 2008 CEAS Dean Awards for outstanding work

43rd Conference On Senior Engineering Design, College Of Engineering And Applied Sciences

Senior Engineering Design Conference

The 43rd Conference on Senior Engineering Design Projects was held on December 2, 2008 at the College of Engineering and applied Sciences on the Parkview Campus of Western Michigan University. The college sponsors the conference to showcase the work of its graduating seniors, who are required to complete a capstone project that puts into practice what they have learned. Many of the projects are sponsored by business and industry.

Global Skin Friction Diagnostics In Complex Separated Flows, Sudesh A. Woodiga

Masters Theses

This work describes the application of a global luminescent oil film skin friction meter to quantitative global skin friction diagnostics in complex separated flows. The development of this technique is based on the relationship between the oil film thickness and luminescent intensity of an oil film mixed with a luminescent dye. The projected thin oil film equation is given to relate the normalized luminescent intensity with skin friction. The basis for this technique is the variational solution for the thin oil film equation on the image plane. The variational formulation with a smoothness constraint on skin friction is proposed to …

Generation And Analysis Of Fcg Data Using A Single Specimen And Kmax - ∆K Testing Matrix, Sree Phani Chandar Reddy

Masters Theses

A custom method to generate fatigue crack growth (FCG) data requires testing of multiple specimens at different load ratios. In addition, it includes the application of a load shedding procedure from pre-cracking level to threshold.

In this thesis, a novel method of testing has been investigated that utilizes a single specimen and a testing matrix in terms of K_maxand ∆K values corresponding to predetermined R-ratios for which FCG data, da/dN, are recorded. Automatic K-controlled tests on 2324-T39 Al alloy were conducted using the ∆K increasing and ∆K decreasing procedures while K_maxwas kept constant. Results show that …

Modeling Fluid Structure Interaction Over A Flexible Fin Attached To A Naca0012 Airfoil, Srinivasa Ravindra Pantula

Dissertations

Flow separation control is of importance to the performance of air vehicles. Generally, it is desired to postpone separation such that the overall drag is reduced, stall is delayed, lift is enhanced, and pressure recovery is improved. This work explores a new concept of post-stall flow control for airfoils and wings by using a thin flexible fin attached on the upper surface of an airfoil to passively manipulate flow structures in the fully separated flows for drag reduction and lift enhancement. The flow induced oscillations combined with the shape deformations change the overall pressure distribution on the fin, which in …

Atomistic-Based Finite Element Simulation Of Carbon Nanotubes, Yang Yang

Dissertations

Since first found in the form of multi-walled carbon nanotubes (MWNTs) by Iijima(1991), carbon nanotube (CNT) for its outstanding and unique properties have gained overwhelming attentions from across the spectrum of the science and engineering fields. CNTs are structurally perfect, small size, low density, high stiffness, high strength (Qian et al., 2002), and their electronic properties depend on the particular distortion as well as the initial tube diameter and chirality, ranging from narrow-gap or moderate-gap semiconducting to metallic (Pantano et al., 2004b), which can be utilized in nanoscale sensors and devices. These appealing characteristics provide strong drives for the possible …

Flexography Printing Of Silver Based Conductive Inks On Packaging Substrates, Ramesh Chandra Kattumenu

Dissertations

Printing technologies for the production of flexible electronics have gained much interest due to its potential as a means to reduce the complexity and costs of present technology. High volume printing techniques like flexography are of great importance in order to produce rolls of flexible electronics printed directly on paper substrates. The proposed research will be focused on RFID components being in-line printed using flexography printing as the manufacturing platform. The properties of substrates and inks and printing process parameters are evaluated to study their effect on printed traces and RFID antenna. It was found in the study that properties …

Ceas E-News 11.18.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Tues., Dec. 2, conference to showcase 42 senior engineering projects

Ceas E-News 11.04.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

CEAS student presents cell culture research at MSGC Conference

Ceas E-News 10.23.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

WMU Formula SAE team competes, wins exhibition competition

Ceas E-News 10.07.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

CEAS team's sensors to monitor Parkview Bridge health

Ceas E-News 09.23.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Summer Institute offers computer interfacing experience

Ceas E-News 09.16.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

"Aspire to a Career" connects job-seekers to more than 80 employeers

Ceas E-News 09.09.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

CEAS students collect nursing data for Bronson study

Ceas E-News 09.02.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

HP grant for tablet PCs to provide virtual materials science lab

Ceas E-News 08.12.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Sunseeker team wins sportsmanship award and more at 2008 NASC

Ceas E-News 08.05.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Paper coating techniques may improve metal casting quality

Ductile-Regime Machining Of Silicon Carbide And Quartz, Deepak Ravindra

Masters Theses

Silicon carbide (SiC) and quartz are one of the advanced engineered ceramic materials designed to operate in extreme environments. One of the main reasons for the choice of these materials is due to its excellent electrical, mechanical and optical properties that benefit the semiconductor, MEMS and optoelectronic industry respectively. Manufacturing these materials is extremely challenging due to its high hardness, brittle characteristics and poor machinability. Severe fracture can result when trying to machine SiC and quartz due to its low fracture toughness. However, from past and current research efforts, it has been proven that ductile regime machining of brittle materials …

Zeolite-Based Nanosized Ti02 Photocatalytic Paper For Antimicrobial Barrier And Toxin Passivation In Packaging: Design, Synthesis And Characterization, Seonghyuk Ko

Dissertations

This dissertation describes comprehensive studies, including design, preparation, characterization and evaluation, to develop an innovative zeolite-based nanosized TiO2photocatalytic paper for disinfection and disintegration of organic toxins.

A novel paper with high photocatalytic performance was successfully prepared using natural zeolite (clinoptilolite)-based nanosized TiO2 photocatalyst in a microparticle retention papermaking system. Photocatalytic material, from its sol-gel derived TiO2 colloids to its anchoring onto zeolite, has been designed, prepared and characterized. Prior to photocatalytic papermaking, the characteristics of sol-gel synthesized TiO2 nanoparticles from colloidal to nanopowder were investigated with various initial sizes of colloidal nanoparticles synthesized in the range of 2.5±0.1 nm and …

A New Rough Wall Layer Modeling For Turbulent Flows Using The Brinkman Equation, Meng-Huang Lu

Dissertations

No abstract provided.

Ceas E-News 07.22.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Changing of the guard in the CEAS dean's office set for Aug. 1

Ceas E-News 07.08.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

WMU's Sunseeker races for a place in the sun in 2008 NASC

Ceas E-News 07.01.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Glycerol may benefit the autohydrolysis process of biomass

Ceas E-News 06.10.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Serving hotdogs and jobs at the 2nd Annual Co-op Cookout

Ceas E-News 06.03.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

CEAS showcases special projects at first WMU Day

Prediction Of Fatigue Crack Growth Retardation Due To A Tensile Overload Using Two-Parameter (∆K, Kmax) Approach, Wataru Tsutsui

Masters Theses

A theoretical crack growth study on powder metallurgy aluminum alloys AA5091 and AA8022 was conducted. Specifically, the research focused on the crack growth retardation due to the application of a tensile overload. The tensile overload creates a plastic zone ahead of the propagating crack tip that induces the compressive residual stress after unloading. Such compressive residual stress pushes the crack tip faces against each other, which results in crack growth retardation.

In the study, simulation started from the calculation of the compressive residual stress. The details of the calculation steps are explained in the thesis. Eventually, the stress intensity factor …

The Effect Of Substrate Properties On Print Attributes For Gravure Printing - From Proof To Press, Yu Ju Wu

Dissertations

Gravure is the major printing process used for publication printing. In gravure printing processes, color proofing is for the purpose of checking the color to ensure that it is as desired. There is no doubt that paper properties have significant effects on the image reproduction for either printing or proofing processes. In order to achieve uniformity of printing and obtain good color reproduction performance, it is important that the all paper properties are well defined and controlled. This study investigates the correlations between paper properties and print quality/color reproduction for gravure publication printing and ink jet printing used in digital …

Ceas E-News 05.13.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

Five inducted into 2007 Alumni Excellence Academy

Ceas E-News 05.06.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

CEAS directs engineering sessions for KAMSC students