Collection

1999 Annual Conference

Authors

Laura J. Genik; Craig W. Somerton

here.Design project 1:Intercooling and Compressor Staging Gas Turbine Power SystemsPrior to the introduction of the mini-project to the class, lectures were given on the analysis ofgas turbine systems. These lectures began with the ideal Brayton cycle and then moved on tothe consideration of regeneration and intercooling with staged compression. Several exampleswere worked in class utilizing a cycle analysis method that was introduced earlier in the coursewhen the Rankine cycle was taught. It was emphasized that although the students would beusing a computer program to perform the calculations for the mini-design project, a thoroughunderstanding of gas turbine system analysis must include an understanding of the calculationprocess that can only be

Collection

1999 Annual Conference

Authors

Anant Kukreti

themathematical models and how important deviations from these assumptions may be. In order toexpose students to a positive experience in working with physical models of dynamic systems,the following wish list was developed:1. At least some of the experiments should be more than just passive demonstrations, so that the students can be motivated to explore answers to their own questions about the behavior of dynamic systems.2. Sufficient equipment and room need to be available so that multiple groups of students can work simultaneously, keeping the individual group size to a small number. Page 4.570.13. Modern data acquisition

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1999 Annual Conference

Authors

Richard Martin

bandlimited information. Also suppose there are similar but undesired AM-DSBsignals at the same amplitude with their carriers at 20 and 60 KHz.The problem is to design a bandpass filter which will pass the 40KHz carrier and its sidebandswith no more than + 5 % variation across the pass band, and discriminate against the nearestundesired sidebands (at 25 and 55 KHz) by 20 dB. A generic form of the required filter is shownin Figure 1. Gain (dB) +5 % 0 -5% -20 25 35 45 55 f (KHz) Figure 1

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1999 Annual Conference

Authors

Nancy Peck; John E. Nydahl

beused and how to configure the apparatus to minimize the resulting error. Embedding thisuncomplicated technique in a spreadsheet environment is very helpful to the student sincespreadsheets are the natural experimental platform for data presentation and reduction, and thissoftware already possesses various statistical packages. The details of an example with fourdegrees of freedom are documented.I. IntroductionIn 1992, University of Wyoming’s College of Engineering completed an internal review inwhich a questionnaire was sent to alumni who graduated in the last decade 1. Most reported thatthey were adequately prepared to compete with their colleagues but recommended that more“real world” engineering tasks be incorporated in future curriculums

Collection

1999 Annual Conference

Authors

John E. Nydahl; Nancy Peck

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

Collection

1999 Annual Conference

Authors

Melissa S. Tooley; Kevin Hall

Collection

1999 Annual Conference

Authors

Richard E. Pfile; Maher E. Rizkalla

”philosophy, we can cover what we need from these fields that serve an importantapplication: Electric Vehicles.1 The course has weekly laboratories and four groupprojects. All students are required to complete the weekly laboratories and select one ofthe group projects. This paper focuses on the series of weekly laboratories in inductionmotor control.II. Background• Variable Speed Motor Control Only in the recent years have ac motors been used in industry for variable speedapplications. Because variable speed control is easily implemented with dc machines,they have dominated in variable speed applications. However, ac machines offer manyadvantages over dc machines. They are smaller than dc machines with the samehorsepower, have a lower

Collection

1999 Annual Conference

Authors

Bobby G. Crawford

minutechanges to their designs without spending an undue amount of time affecting those changes.II. The Design ProblemThe design problem covered five out of 40 course lessons and spanned a period of 19 days. Theproblem posed to the students consisted of a fictional scenario in which the U.S. Army haddecided to retrofit the UH-1 helicopter. All design teams were notionally in place except therotor design team. The students were organized in 2-3 person teams and given the task ofproposing a conceptual rotor design for the new aircraft. Page 4.575.1They were given a parametric set of weight and cost equations and the constraints listed in Table1

Collection

1999 Annual Conference

Authors

Sam Thompson; John I. Hochstein; Tom Benson; Jeff Marchetta

for homework exercises to consider many configurations that would betoo numerically intensive for a student to examine in a reasonable amount of time if doing thecomputations with a hand calculator.MethodsThe two interactive educational packages, with output being shown in Figures 1 and 2, sharecertain characteristics. Both of the programs run on an SGI workstation and are controlled by agraphical user interface based on the FORMS library developed by M.H. Overmars. ConsideringFigure 1 as an example, the student is presented with an engineering problem in the main viewwindow of the computer terminal. The student can control the size, location and appearance ofthe figure by using the sliders and buttons located around the view window. The

Collection

1999 Annual Conference

Authors

R. L Alan Jordan; Eric W. Tisdale

acquisition card were used to collect thedata automatically. Methods for collecting the data are discussed for both the manual andautomatic modes. Graphs are shown for both. The results are discussed briefly.Conclusions are made on the validity of the experiment.MET 230 FLUID POWER, the COURSE1: In the Mechanical Engineering Technology curriculum at Purdue University,sophomores take their first course in fluid power – MET 230. In the Ball StateUniversity Manufacturing Engineering Technology curriculum, this same course isITMfg 340, which is the only fluid power course these students take. Some of the topics covered include the following: 1. Fluid properties – pressure, head, viscosity, density, specific weight, specific gravity, bulk

Collection

1999 Annual Conference

Authors

S. A. Chickamenahalli; M. Bolepalli; Venkateswaran Nallaperumal; Chih-Ping Yeh; Bonnie Shelnut

of suchdevelopments. This project involved developers, specialized in electrical engineering,responsible for the technical content, an industry partner to provide feedback and inputs onmaterial relevant to manufacturing, instructional technologists to insure ease of visual learning,specialists to help in devising modes for assessing learning of CBI material, graphic designers tocreate professional drawings and figures, multimedia specialists to develop animations based onwritten descriptions of the developers, and authoring tool experts to develop the material onAuthorware and Flash screens.1. Introduction The growing need for improved education in technical fields has led to the developmentof innovative methods of instruction

Collection

1999 Annual Conference

Authors

Francis Ting

primarily as ateaching flume. A smaller channel can also be used in these experiments. The minimum operatingdepth of SonTek ADV is 20-30 mm for the side-looking probe, and 55-120 mm for all otherprobes.III. The ExperimentsA. Flow behind a PierThe objective of this experiment was to measure the velocity distribution and root-mean-squarefluctuating velocity in the wake of a circular cylinder. The basic concepts learned were: (1) theflow behind a pier in an open channel is three dimensional and turbulent; (2) in three-dimensionalflows the fluid velocities depend on all three spatial dimensions; and (3) the instantaneous velocityin a turbulent flow is consisted of a time average and a fluctuating component.A 114-mm-diameter circular pier was placed at

Collection

1999 Annual Conference

Authors

Shirley Pomeranz

capabilities were utilized to derive finite-difference formulas (see Figure 1). For example, the Lax-Wendroff finite-differencescheme for 1-D transport equations was derived by constructing a quadratic Lagrangeinterpolating polynomial. Mathematica solved a linear system to obtain the polynomialcoefficients; then, replacement rules were used to substitute these coefficients into thegeneral expression for the polynomial (alternatively, Mathematica could have been usedto directly perform the interpolation via its Interpolation or InterpolatingPolynomialcommands). Finally, the polynomial was evaluated at an appropriate point (alsodetermined by Mathematica). The resulting expression was the Lax-Wendroff scheme.Mathematica notebooks that were provided on

Collection

1999 Annual Conference

Authors

Teri J. Murphy; Russell Goodman; Michael Hofer; Jonathon White; Elena Black; Bradford Kline

overheadprojector but rather to accomplish tasks that other instructional tools can not. One such task isthe animation of graphics, presented in-class by way of a demonstration on a computer.For example, to help students understand the relationship between the three-dimensional graphof a surface and its contour diagram, we use a computer animation. The example presented inFigure 1 shows a paraboloid. Marked on the paraboloid are the circles obtained by intersectingthe paraboloid with horizontal planes; these circles are referred to here as “horizontal cross-sections.” The animated migration of these cross-sections to the xy-plane is used in class todemonstrate the relationship between a three-dimensional surface and a contour diagram.Figure 1 shows a few

Collection

1999 Annual Conference

Authors

Steven Schneiderman

fertilization prior to a historic rainfall).Finally, the course is paperless. All submissions occur via diskette or as an emailattachment. There are no examinations; only results.References:1. Roschelle, J. (1992). Learning by collaborating: Convergent conceptual change. Journal of LearningSciences, 2, 236-276.2. Damon, W., & Phelps, E. (1989), Critical distinctions among three methods of peer education. Page 4.582.2International Journal of Education Research, 13, 9-19. Session 25483. Shunk, D.H. (1987), Peer models and children’s behavioral change. Review of

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1999 Annual Conference

Authors

Francois Michaud; Mario Lucas; Gerard Lachiver; Andre' Clavet; Jean-Marie Dirand; Noel Boutin; Philippe Mabilleau; Jacques Descoteaux

Figure 1. ROBUS (RObot Université de Sherbrooke)To accomplish these goals, we decided to develop an autonomous mobile robot that could beeasily expanded and used in various activities of both curricula, that could adequately reflect thechallenges in electrical and computer projects, and that could be supported by good developmenttools and documentation. This paper describes the mobile robot developed and named ROBUS,shown in Figure 1, and explains how it is used in various activities. After having described thecharacteristics of ROBUS in Section II, Section III explains how it is used to introduce electricaland computer engineering to teams of first-year undergraduate students in a project calledINGÉNIUS. Section IV describes how ROBUS is used

Collection

1999 Annual Conference

Authors

Lucy C. Morse

ManagingEngineering and Technology 1, although the resources and techniques may be used for a varietyof management courses. This paper presents resources and tools that may be used to enhance themanagement functions, product life, and personal management discussions. Since the resourcesare not static, the web listings give a starting place for future explorations.Interaction activitiesAll the different interaction activities within a course contribute a given percentage to the finalcourse grade. This encourages all students to participate. The activities listed are more suitablefor some courses than others. Page 4.584.2World Wide WebThe management course has

Collection

1999 Annual Conference

Authors

Michael Werner

inproject organization, and construction management. He found it critical that students be able toaccess relevant material in a PBL course. Access to current research is one of the great strengthsof the world wide web, particularly in areas such as computer science, where practitioners areoften web-literate, and willing to share their results by freely posting them.Using the Internet in Teaching a Student-Centric Projects Course.The availability of Internet resources proved to be the key to offering a successful ComputerScience Projects course. The world wide web was used in the following ways:1) For presentation using student web sites. Each student presented his/her work on an individual web site. A course requirement was for each

Collection

1999 Annual Conference

Authors

Ronald James; Janet L. Gooder; Charles Wisniewski; Brenda Haven; A. George Havener

Page 4.587.1the objectives presented in Table 1. Table 1 Course Goal and Objective Statements By completion of Engr310, you should understand the fundamental principles of Goal Thermodynamics and their relevance to energy systems. By the end of the course, you should be able to: 1. Explain the 1st and 2nd Laws of Thermodynamics. 2. Explain the concepts and terms of Thermodynamics. 3. Use the 1st and 2nd Laws of Thermodynamics to solve problems. 4. Complete an ill-defined energy systems design project. Objectives 5. Constructively participate in group work. 6

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1999 Annual Conference

Authors

Valerie L. Young

Collection

1999 Annual Conference

Authors

Anthony J. Marchese; Shreekanth A. Mandayam; T. R. Chandrupatla; John L. Schmalzel

to provide specialization in separate and credible departments, yet small enough to permit the creation of a truly multidisciplinary cur- riculum in which laboratory/design courses areTable 1. Overview of course content in the 8-semester offered simultaneously to all engineering stu-Engineering Clinic sequence. dents in all four disciplines. Indeed, the hall- Year Clinic Theme (Fall) Clinic Theme (Spring) mark of the engineering program at Rowan Frosh Engineering Meas- Competitive University is the interdisciplinary, project- urements Assessment Lab

Collection

1999 Annual Conference

Authors

Frank E. Falcone; Edward Glynn

Collection

1999 Annual Conference

Authors

Ronald J. Gatehouse; John R. McWhirter; George J., Jr. Selembo

willunderstand many of the details of designing the plant without losing focus of the ultimate goal ofthe process. Most importantly, however, at some point in the project they will have to makesome of their own decisions. There will be more than one way to attack the problem, and thestudents will have to make appropriate assumptions, research several alternatives, use commonsense and think both logically and physically in order to arrive at a practical solution. If thisproject accomplishes its goal, the chemical engineering curriculum at Penn State University willtake a step away from being a mere extension of theoretical science and a step toward being anactual preparation for a career in thoughtful problem-solving and design.1 IntroductionLike many

Collection

1999 Annual Conference

Authors

Raji Sundarajaran; Christina Sisterna; Charles A. Lipari; Robert W. Nowlin

thetechnological constraints. This report gives a simple approach to logic design using VHDL thatfollows the design flow given in Figure 1. A top-down methodology is used Specifically, thedesigner must think in an organized fashion to generate a top-down hierarchy. Modularinterfaces are developed at top-level. Higher-level components are made up of lower-levelcomponents, with the lowest level being components that have realizable behavioral or structuraldescriptions. The design tools used in the Department of Electronics and Computer EngineeringTechnology at Arizona State University East allow the generation of this hierarchy within codeor schematic.The synthesis tool Synplicity Synplify1 allows portable behavioral VHDL code that issynthesizable and

Collection

1999 Annual Conference

Authors

Prawat Nagvajara

two signals from the computer running thevirtual experiment software, (1) indicating the presence of cars waiting at the red light, and (2)acknowledging the changing of lights upon the receipt of a request from the controller. Theexternal controller can send signals to the computer running the animation to change the lights atthe intersection. The interface between the virtual experiment application running on the Page 4.590.2computer (Macintosh) and the external controller is via an interface unit called ADB I/O(Beehive Technology Inc.) [1], in which a driver for Java is available. The students also learnhow to implement an asynchronous

Collection

1999 Annual Conference

Authors

Tom Mase

designiterations using LS-DYNA1, a commercial explicit finite element program, simulations wherethey specify geometry, material, and material properties for a two-piece or double cover ball.From each of these simulations the students get initial velocity, launch angle, backspin, anddistance. A FORTRAN program has been written allowing the students to input their ball launchconditions to obtain the ball’s trajectory and carry distance. To accommodate the student’sanalysis needs, a standardized LS-INGRID file for the ball and club was developed (LS-INGRIDis a preprocessor for LS-DYNA). Also, FORTRAN program has been written to post-processthe data. Running these simulations on a Sun Ultra 1 workstation takes approximately 7 minutesper design iteration.I

Collection

1999 Annual Conference

Authors

Roy R., Jr. Craig; Edward McConnell

course occurred that was centered around the shift to digital dataacquisition through the use of virtual instruments (VI’s) based on the LabVIEW™ software.1This paper discusses the development of the VI’s used in the course, the laboratory exercisesthat comprise the course, and the improvements in student morale and report-writing skills thathave resulted from the restructuring of the course.1. Introduction Measurements and Instrumentation (M&I) is a 3-hour, required, junior-level course inthe Aerospace Engineering curriculum at The University of Texas at Austin. A confluence ofcircumstances occurred in the early 1990’s that led to a major restructuring of the course: theearly medical retirement of the principal course instructor; the

Collection

1999 Annual Conference

Authors

Biwu Yang

anonline course based on the need of materials to be delivered 1-2. For example, web pages andFTP site can be used to hold general course materials. Mail lists and newsgroup can be used fordiscussion in the class. IRC and audio/video conferencing can be used to engage real-timediscussion and hold the Question/Answer session for students.The online delivery approach makes it possible for students, who live far away from a campusand can not afford to attend the school due to their work schedule and family responsibility, tocontinue their education. Distance learning has several advantages compared with traditionalclassroom setting, particularly: Page

Collection

1999 Annual Conference

Authors

John T. Bell; H. Scott Fogler

. Preliminary studies found that unguided and unstructuredexploration was not as educationally effective as was hoped, and so this module is now beingaugmented with an interactive question-and-answer system in order to provide better directionand incentive for exploration.The minor modules were developed to test and illustrate specific techniques for the applicationof VR to the delivery of scientific information on student-affordable personal computers. Topicscovered in the minor modules include thermodynamic relationships, fluid flow, crystalstructures, and the visualization of azeotropic residue curves in four-component space. Figure 1: Transport Reactor Room from Vicher 1, Staged Reactor Area from Vicher 2, and a

Collection

1999 Annual Conference

Authors

Shahen Akelyan; Rupa Purasinghe; Javed Alam

documents the successful implementation of Virtual Learning Community Model ina Freshman Engineering Design course at California State University at Los Angeles (CSLA)and its parallel implementation as a communication tool at Youngstown State University. Avirtual learning community software based on client/server computing model was installed atCSLA. It allowed group of students to collaborate in real time through a graphics based chatfacility. These were accessible round the clock since they reside on a World Wide Web server.As CSLA is predominantly a commuting campus this model was instrumental in bringingstudents together in their project when they are not on campus.1. IntroductionThe World Wide Web is emerging as a new medium for transmitting