to evaluate the pressure-volume data from a single engine cycle for thesupermileage car. This MEA is introduced in the third week of the quarter to mostly third-yearundergraduate students. The students are told that they are to model this cycle with 4-6 simpleprocesses in order to evaluate the thermal efficiency of the engine cycle as well as recommend away to increase its efficiency. Appendix A contains the problem statement combined with thegraphic of the ‘real’ cycle plotted on a pressure and volume diagram seen in Figure 1. A pre-labwith helpful information for the students to learn beforehand is listed in Appendix B. The graphic Page
. Page 22.1227.4the Savery pumpThomas Savery (c1650-1715), building on the work of the earlier philosophers and experimenterswho discovered atmospheric pressure, vacuum conditions, steam characteristics, and therelationships of pressure, area and force, designed the first practical pumping engine. Savery wasissued a patent for his pumping engine in 1698. His engine is shown in Figure 2. The principlecomponents were a “receiver” (R) connected to a suction pipe with a check valve (SV) and adischarge pipe (DP) also with a check valve (DV) installed. The receiver was connected to a boiler(B) via a steam pipe (SP) and steam control valve (SC). Another valve off the discharge pipe, thecondensing jet valve (CJ), allowed some of the water to drain from
and stress are provided.The closed-form analysis is conducted using Castigliano’s method. Beam and shell finiteelement models are built and analyzed in Abaqus CAE. Structural prototypes are constructedwith PASCO Structures System components and tested with simple weights and scales.The strengths of this combined approach are that the students (a) gain experience with the threedifferent methods of stress/deflection analysis, (b) compare the different methods on a singleproblem, and (c) check or confirm their own results. By using existing finite element softwarelicenses and available PASCO components, the project took no additional lab time and noadditional cost to implement.Since the first use of this lab project was with in a small class, no
AC 2011-1108: A DIMENSIONAL ANALYSIS EXPERIMENT FOR THEFLUID MECHANICS CLASSROOMCharles Forsberg, Hofstra University Charles H. Forsberg is an Associate Professor of Engineering at Hofstra University, where he primarily teaches courses in the thermal/fluids area. He received a B. S. in Mechanical Engineering from Polytech- nic Institute of Brooklyn and an M. S. in Mechanical Engineering and Ph. D. from Columbia University. He is a Licensed Professional Engineer in New York State. Page 22.37.1 c American Society for Engineering Education, 2011 A Dimensional Analysis
AC 2011-609: LEARNING ROBOTICS THROUGH DEVELOPING A VIR-TUAL ROBOT SIMULATOR IN MATLABYang Cao, University of British Columbia (Aug. 2007 - Present) Instructor, School of Engineering, University of British Columbia Okanagan Cam- pus (Aug. 2005 - June 2007) Postdoc, Industrial and Manufacturing Systems Engineering, University of Windsor Page 22.1006.1 c American Society for Engineering Education, 2011 Learning Robotics through Developing A Virtual Robot Simulator in MatlabAbstractDue to the expensive nature of an industrial robot, not all universities are equipped with arealrobots for
enter academia, industry, or take other career paths. A study of a similar programat Georgia Tech was published in 1998.2 This current study provides a retrospective look at thecourse and offers lessons learned.Conduct of the Study Page 22.1349.2A web-based survey was sent to 321 former doctoral students who graduated from the WoodruffSchool of Mechanical Engineering from the summer of 1996 through the spring of 2009. A copyof the survey is provided in appendix B. Ninety-nine responses were received for a response rateof 30.7%.Results Helpful in AcademiaThe first question in the survey asks whether the Teaching Practicum has been helpful
short paper Written Assignment by students on a topic of their choice described above in b)- Class Discussions as described above in c)- Student Satisfaction SurveyThe data collected from instruments a), b), and c) was scored by faculty using the rubricdescribed in d). This Rubric is presented in Table 1 below. Page 22.252.4Table 1. Rubric for assessing contemporary issues assignments. Very Good Good Fair PoorBreadth of Covers a variety Five total Less than five Less than fiveTopics - from of engineering examples that total examples
isbecause a grade of D or F is expected at the end of semester. Therefore, in reality the class GPAwould be lower than 2.04 in the last column, if students stayed in the course until the end ofsemester. The class GPA would be 1.43 if all grades of W are counted as grades of F.Table 1. Grade distribution comparison of the same course taught by the same instructor in two separate semesters Limited or no Student Access Large percentage of Students Using Grade to Solution Manual Solution Manual for Assignments (N=38) (N=56) A 17% 12% B 31
assessments with respect to the 21-cell table shown in Table 1. For example, thestudent understanding of Learning Outcome 3: Stress, is assessed with respect to the three levelsof achievement: a) Can the student identify the concept or perform a simple calculation using it? b) Can the student look at a mechanical scenario and decide which concept to apply, and perform multiple related calculations to determine an answer? c) Can the student evaluate a given scenario, often open-ended, where the concept may be only one part of a complex system involving other concepts?At the completion of the semester, each outcome-level cell in the matrix contains a score thatrepresents the student‘s demonstrated
left and right connecting points to the rear suspension. The points x91/3 are the leftand right connecting points to the front suspension. L b a bp ap z x9 Rear x Front hPC x95/7
. Page 22.42.73.3 Conceptual Understanding ResultsTable 1 shows the average exam scores and standard deviations for each of the exams given inME450, during or after the design project was in process. The scores are shown separately forboth the conceptual portion of the exams and the problem-solving analytical portion of theexams. Table 1 also shows the percentage of students scoring above 80%, which both gives anindication of the skewness of the grade distribution since the means are close to 80% and alsoindicates the percentage of students demonstrating proficiency at the „B‟ level or higher in thesubject. Finally, Table 1 also shows p-values for t-tests comparing student performance onvarious parts of the exams. For midterms one and two, a
motor – consists of the brushes and magnets). Figure 2: Simplified schematic of the internal parts of a PMDC motor.The magnet and coil enable the conversion of electrical energy into mechanical energy. Ascurrent i (from the battery) flows through a magnetic field B, a force F is applied to the coil, ,where L is the length of the coil. This results in a torque 2 ,that spins the motor. Note that r is the distance from the centerline of the rotor to the coil.The brushes (stationary) and commutator (rotates) serve two purposes. First, they enable transferof current from the stationary power source (in this case shown as a
determine temperature distribution along arectangular fin subjected to heat loss through convection. The length, width and thickness of the Page 22.930.3fin are L, b and t, respectively as shown in Figure 1 below.Figure 1: Physical model of a rectangular fin. The figure is taken from ANSYS documentation5.The base of the fin is kept at a constant temperature Tw and the following assumptions areconsidered to determine the temperature distribution along the length directions. a) Heat is transferred to the fin via its base due to conduction. b) Heat is flowing in one dimension only, along the length axis of the fin. c) No
" Teaching in Higher Education vol. 5, pp. 345-358, 2000.[9] D. R. Woods, "Applying problem-based learning approach to teach elementary circuit analysis," IEEE Transactions on Education, vol. 50, pp. 41-48, 2007.[10] C. Eugene, "How to teach at the university level through an active learning approach: Consquences for teaching basic electrical measurements," Measurement, vol. 39, pp. 936-946, 2006.[11] P. Cawley, A Problem-based Module in Mechanical Engineering 1991.[12] P. Anderson. (2009 January 17). The Wright State University Model for Engineering Mathematics Education (6/9/2009 ed.). Available: http://www.engineering.wright.edu/cecs/engmath/[13] M. B. Jackson and J. R. Ramsay, Eds., Problems for
, define the following terms as they relate fluid mechanics and thermodynamics. Do not just recite the symbols in words; for example, mv2/2 is kinetic energy, not one-half of the mass times the square of velocity. Also give the units of the quantity. Meaning Units a. W _________________________ ________________ b. P _________________________ ________________ c. E _________________________ ________________ d. u
xe L1 cos 1 L2 cos 1 2 (1) ye L1 sin 1 L2 sin 1 2 Page 22.480.5 b) Inverse kinematics 1 sign( 2 ) 2 a tan 2 D, 1 D 2 where (2) xe2 ye2 L12 L22 x 2 y 2 L2 L2 D , a tan 2( ye , xe ), cos 1 e e
, VU Senior Design faculty have a weekly meeting to discuss projectperformance and calibrate general grading strategies between faculty members. Additionally,grading rubrics have been created for all assignments (see Appendix B for an example rubric).To eliminate conflicting comments and grades when evaluating oral presentations, eachindividual faculty advisor collates all comments and grades from all faculty members andforwards one grade and screened comments to the appropriate team. Finally, Senior Designfaculty participate in a calibration session for writing assignments. During this session, acommon writing assignment is commented and graded. Then, Senior Design faculty discuss theresults with the goal of developing a common grading
has been taught to third-year students atRowan for the past eleven years. It is modeled on traditional applied kinematics courses.Sample topics include: • Introduction to mechanisms • Graphical linkage synthesis • Fourbar, slider-crank, inverted slider-crank and other linkages • Position, velocity and acceleration analysis • Inverse dynamic analysis of linkagesDepending upon the instructor, the mechanical systems are modeled using an a)trigonometric/algebraic approach or b) a vectorial constraint equation approach. In the secondapproach, a system of nonlinear constraint equations is developed for each problem, which issolved using MATLAB or similar software. The author uses the second approach when teaching
, Page 22.1221.4valuable information can be learned about the vehicle’s motion throughout the event. For thepurposes of this course project, the students were instructed to make the following simplifyingassumptions: air drag was insignificant, there were no elevation changes of the ground in thevicinity of this event, the vehicle’s rotation was solely about its longitudinal axis during thetumbling phase, and the vehicle rolled along the ground during the tumbling phase (i.e., it did notvault vertically into the air).AnalysesWith the information provided, the students were tasked with completing a series of analyses thatbuilt upon each other: a) Calculate the translational speed of the vehicle center of mass (vG) throughout the event. b
AC 2011-2241: REVISITING COMMUNICATION EXPERIENCES TO PRE-PARE FOR PROFESSIONAL PRACTICEKathryn Mobrand, University of Washington Kathryn Mobrand is a doctoral candidate and research assistant in the Department of Human Centered Design & Engineering at the University of Washington. She is working with Dr. Jennifer Turns on preparedness portfolios for engineering undergraduates; her focus is on the communication of practicing engineers.Jennifer A Turns, University of Washington Jennifer Turns is an Associate Professor in the Department of Human Centered Design and Engineering at the University of Washington. She is interested in all aspects of engineering education, including how to support engineering
grading, and Taylor shows that theyare typically ill-trained and supervised.20 However, Smith points out that technical faculty areconsistently more effective than communication instructors at identifying technical errors instudent reports.21 Further complicating the authority problem, Cho explores the way peopledeliver communication feedback and the ways that students respond to it.22 Cho finds thatstudents respond best to feedback that is (A) positive and (B) directive—so long as the directivesare non-trivial. In order to deliver non-trivial directive feedback, communication instructors Page 22.1687.7must either be well-versed in the technical
ddesigned for UPF. The R Rockn’ Bowleer allows a person with partial p quadrriplegia to boowl. This devvice is a “high-end”attachmeent for the Un niversal Playy Frame, giv ving the userr a great deall of control oover the spinn andplacemen nt of the balll. Perhaps th he most uniqu ue feature off the Rock nn’ Bowler is the powereddspinning rail system that can be used u to add spin s to the b all. As the bball rolls dow wn the ramp,, itcomes inn contact with h two rails spinning
wind turbine Coherent Application Thread woven through Boston University Mechanical Engineering curriculum Page 22.770.8 CATs COHERENT A! PPLICATION THREADS ! "#$! %&!!!!'("!#)*+,+-.+*/01,+2345!-41.+326! ! 784!9:;(-,1545!:+35!9*.-+34!68;:3!+3!984! 6<49=8!+6!+3!984!>,;=<45?!;.!>-.1<45?! =;35+9+;3@!98;*28!984.4!1.4!69+,,!14.;5A31/+=! B;.=46!;3!984!-,1546@!16!68;:3@!5*4!9;!984! :+35&!!784!-.1<4!B;.=4!9819!<44C6!984!.;9;.! ,;=<45!+6!D
AC 2011-1200: A WRITING PROGRAM FOR MECHANICAL ENGINEER-INGWilliam K. Durfee, University of Minnesota, Twin Cities William Durfee is Professor and Director of Design Education in the Department of Mechanical Engi- neering at the University of Minnesota, Minneapolis, USA. His professional interests include design of medical devices, rehabilitation engineering, advanced orthotics, biomechanics and physiology of human muscle including electrical stimulation of muscle, product design and design education. Additional infor- mation is at www.me.umn.edu/˜wkdurfee.Benjamin Adams, Mechanical Engineering, University of MinnesotaAudrey J. Appelsies, University of MinnesotaPamela Flash, University of Minnesota Pamela Flash
AC 2011-751: GOING WITH THE FLOW IN A SERVICE LEARNINGPROJECTTim L. Brower, University of Colorado, Boulder TIM L. BROWER is currently the Director of the CU-Boulder and Mesa State College Mechanical Engi- neering Partnership Program. He received his BS in General Engineering at Idaho State University, MS in Mechanical Engineering from Montana State University and PhD in Civil Engineering from Colorado State University. Before becoming the director of the partnership two years ago, he was a Professor and Chair of the Manufacturing and Mechanical Engineering and Technology Department at Oregon Institute of Technology. While in Oregon, he served as the Affiliate Director for Project Lead The Way - Oregon. In
2006-2008). They also acknowledge the additional support ofOakland University’s Office of the Provost and Vice President for Academic Affairs. Specialthanks go to all the industrial mentors who have volunteered some of their precious time andresources to help make the program a success, as well as the contributions of all of theundergraduate students who have taken part in the program.References 1. E. Seymour, A.-B Hunter, S. Laursen, and T. DeAntoni, T. “Establishing the benefits of research experiences for undergraduates: first findings from a three-year study,” Sci. Educ., 88, pp. 493–594, 2004. 2. A.W. Astin, What matters in college? Four critical years revisited. San Francisco: Jossey-Bass., 1993. 3. Pascarella, E. T., &
AC 2011-795: PROJECT-BASED SERVICE LEARNING AND STUDENTMOTIVATIONLauren A Rockenbaugh, University of Colorado, Boulder Lauren Rockenbaugh is a PhD student at the University of Colorado at Boulder. Her research involves project-based service learning and student motivation. Lauren is also the co-director of Engineering for American Communities, a multidisciplinary engineering student organization whose mission is to perform entrepreneurial engineering design work to create affordable living innovations for people in need in local communities.Daria A Kotys-Schwartz, University of Colorado, Boulder DARIA KOTYS-SCHWARTZ is the Faculty Director for the Mesa State College-University of Colorado Mechanical Engineering
AC 2011-781: THE IMPACT OF ACTIVITY BASED LEARNING, A NEWINSTRUCTIONAL METHOD, IN AN EXISTING MECHANICAL ENGI-NEERING CURRICULUM FOR FLUID MECHANICSLynn Albers, North Carolina State University Lynn Albers received her B.S. in Mathematics with a minor in Music from the Massachusetts Institute of Technology in 1992 and her M.S. in Mechanical Engineering with a concentration in Nuclear Engineering at Manhattan College in 1996. After working for Nortel Networks and the North Carolina Solar Center, Lynn matriculated at North Carolina State University where she is a Ph.D. candidate in Mechanical Engi- neering. Her dissertation spans the Colleges of Engineering and Education and will be the first of its kind at NCSU.Laura
AC 2011-2803: REDESIGN OF OUTBOARD MOTORS FOR USE IN THEGRAND CANYONTrian M. Georgeou, Arizona State UniversityScott Danielson, Arizona State University, Polytechnic campus Dr. Scott Danielson is the Department Chair of the Engineering Technology Department at Arizona State University and has served in this capacity since 1999. He has been active in ASEE in the Mechanics Division and the Engineering Technology Division, currently serving on the Executive Board of the En- gineering Technology Council. He has also been active in ASME; being awarded the 2009 Ben C. Sparks Medal for excellence in mechanical engineering technology education, serving as a member of the Vi- sion 2030 Task Force, serving as chair elect of
excellence in mechanical engineering technology education, serving as a member of the Vi- sion 2030 Task Force, serving as chair elect of the Committee on Engineering Technology Accreditation, serving on the Board of Directors of the ASME Center for Education, and as a member of the Mechani- cal Engineering Technology Department Head Committee. He has been a program evaluator for both the Society of Manufacturing Engineers (SME) and ASME and currently serves on the Technology Accredita- tion Council (TAC) of ABET, representing ASME. He also serves on the SME’s Manufacturing Education and Research Community steering committee. Before joining ASU, he had been at North Dakota State University where he was a faculty member in