did the PLCs. Figure 1 (a) is a photograph of a bank of relays while Figure 1 (b) is a photograph of one of the old GE Series One PLCs – both from author’s automation lab. The GE Series One was the first “shoe box” size PLC [12]. The PLC hardware included a rack of I/Os, a power supply with a hand-held programmer, a CPU module, a cassette tape port, and peripherals such as the printer interface unit, data communication unit, and PROM writer unit. The PLC was programmed using ladder logic only. (a) (b) Figure 1. (a) Bank of Relays (b) GE Series One PLC Originally, the GE Series One PLC was used to control a system of conveyor
Practice 2017, 18, 55-63.Cooper, Melanie M. Chemistry and the Next Generation Science Standards Journal of ChemicalEducation 2013, 679-680.Galloway, K.R.; Bretz, S.L. Measuring Meaningful Learning in the Undergraduate ChemistryLaboratory: A National, Cross-Sectional Study Journal of Chemical Education 2015, 92, 2006-2018.Galloway, K.R.; Malakpa, Z.; Bretz, S.L. Investigating Affective Experiences in theUndergraduate Chemistry Laboratory: Students’ Perceptions of Control and ResponsibilityJournal of Chemical Education 2016, 93, 227-238.Kegley, S.E.; Abdella, B. Water Treatment Instructor Guidebook Norton: NY, 2003.Kegley, S.E.; Landfear, D.; Jenkins, D.; Shomglin, K. Water Treatment: How Can We MakeOur Water Safe to Drink; Norton: NY, 2004; pp 43
Paper ID #27007ARM Cortex M4F-based, Microcontroller-based, and Laboratory-orientedCourse Development in Higher EducationDr. Byul Hur, Texas A&M University Dr. B. Hur received his B.S. degree in Electronics Engineering from Yonsei University, in Seoul, Korea, in 2000, and his M.S. and Ph.D. degrees in Electrical and Computer Engineering from the University of Florida, Gainesville, FL, USA, in 2007 and 2011, respectively. In 2017, he joined the faculty of Texas A&M University, College Station, TX. USA, where he is currently an Assistant Professor. He worked as a postdoctoral associate from 2011 to 2016 at the
had a pre-defined deadline and little to no communicationhappened between the students and the instructor during the assigned deadlines. An importantlesson learned from the first time offering of this project was the need to have a bettersupervision over the teams’ workflow and create an environment for a better and moretransparent team communication. Since most groups consisted of members located on differentcampuses, there were occasions that the team members were completely blindsided on theprogress of the project by the other members. (a) (b) (c) (d)Figure 2. Sample of student's work on compressor mechanism (a, c) 3D design and (b) 3D
adjustable connection which can be attached to the load frame to demonstratethe 3 different conditions of fixed-fixed, pined-pined, fixed-pined. `4 a) b) Figure 6: a) Fixed connection and b) pinned connectionsA nylon member was tested under the load frame to demonstrate the effect of fixity on bucklingfor first-year students. Figure 7 demonstrate the specimen tested under 3 different fixity at endconnections. a) b) c) Figure 7: Nylon specimen tested for demonstration of the effect of fixity on
. The basic The bench-top measurement device circuit for this experiment is shown in Fig. 2.used here is an Agilent Digital Storage The input voltage is a square wave generatedOscilloscope (DSO-X 2024A). This devices by a bench-top function generator. Studentscan be connected to a PC through USB for measure the voltage across the resistor using adownloading the data points. bench-top oscilloscope, download the data points to a computer, and use Excel curve-II. B. Digilent Analog Discovery 2™ fitting feature to calculate the time constant of DAD2 is used both as a power source the
− ℎ1 Fig. 1: a) Schematic and b) 𝑇-𝑠 diagram for an ideal vapor-compression refrigeration cycle.The actual vapor compression cycle is an alteration from the ideal cycle due to irreversibilities andsmart planning by engineers to protect the system components. At the inlet to the compressor, therefrigerant is slightly superheated to ensure that no liquid enters the compressor. The actualcompression is not reversible or adiabatic so it is not isentropic. State 3 is slightly subcooled toensure pure liquid enters the throttling valve. A 𝑇-𝑠 diagram more representative of an actualrefrigeration cycle is given in Fig. 2. Fig. 2: 𝑇-𝑠 diagram for an actual refrigeration cycle. The solid line represents the ideal cycle and the dashed the
, such as desktops, laptops, and tablets, b) retrieving each of the web pagesaccessed by an user to solve a problem, c) retrieving user’s action information within a webpageto detect the various objects, such as YouTube videos, buttons, and parameter from drop-downmenus clicked by the user, d) retrieving information useful to detect the various devices used byan user and to identify the compatibility of the user- tracking system with various operatingsystems, browsers and device types/models, e) retrieving users’ location information to identifyfrom which part of the world a user is accessing the system, and f) retrieving users’ browserstatus at a regular interval of time (60 sec) to detect whether a user is actively using the OWLSbrowser or
at the end of the 10th week of a 15-week semester, as a rough draft before thefinal report (FR). The PR consisted of the first four sections of the FR, A) Problem Definition-5%, B) Brainstorming Alternatives-5%, C) Proposed Design-10%, and D) Construction & TestProcedures-10%. The syllabus briefly defined expectations for each section and referredstudents to website references for more information about the initial IMD prototype. Studentswere then directed to visit Canvas for a detailed procedure of construction and experimentation,including a rubric with evaluation criteria. The PR submitted by each project group wasreviewed by the instructor, assigned a tentative in-progress grade based on rubric criteria.Reviewed drafts of the PR were
surveys fromgraduating seniors and alumni to focus on hands-on experience in the undergraduate program. Alongwith that, there has also been a focus on participating in competitions such as Shell-Eco Marathon byseniors for their capstone project. An opportunity arose to address both these issues by building anengine/chassis dynamometer.A funding request has been granted by a robotics company paving the way for design and build of anengine/chassis dynamometer. The dynamometer, in its first iteration, cost about $10,000 but a reviseddesign costs under $8,000. The dynamometer has been designed for Shell Eco Marathon competitionbut has found its uses in multiple projects over the past year, including a summer toboggan redesign fora local state park
experimental results. Section 3 presents student responses. The paper concludes withsome overall observations and suggestions to improve the design.1. The Lab ApparatusThis section describes the different components of the lab apparatus. This apparatus (both thecyber and physical) was constructed to teach advanced control topics to undergraduates in asenior-level process control lab.1.1.Lab Apparatus Hardware The lab apparatus is shown in Figure 1 and component specifications are given in Table 1. Domestic hot and cold water lines come in from the left-hand side. The hot and cold water flow rates are set by control valves (marked “a” in Figure 1) and the temperature of the incoming water is measured by in-line thermocouples (marked “b” in
a method for curricularintegration of a project that many FSAE teams attempt to solely undertake as a multi-yearextracurricular activity.Course Learning ObjectivesThe ABET outcomes that were assessed for this course included: (b) design and conduct experiments, analyze and interpret data (g) ability to communicate effectively (i) recognition of need for and ability to engage in life-long learning (k) ability to use technology, skills, modern tools for engineering practiceJones [7] proposes a metric by which ABET outcome (b) could be assessed for experimentalcourses while also describing the accreditation framework. He applies a rubric adapted fromvarious engineering schools to a civil engineering
), ability to plan and design a system, component orprocess that meets desired needs (abet c), ability to use techniques, skills, and modern engineeringtools necessary for engineering practice, including computer tools and information technology(abet k), and the ability to design and conduct experiments as well as to analyze and interpret data(abet b).The course topics traditionally include computer-aided structural analysis of trusses, 2D-framesfor gravity and lateral loads and load combinations, computer-aided structural design of 2D-frames, setting up of an experiment on a small shake table and dynamic experimentation,computer-aided structural dynamic analysis with time history, and verification of computer-aidedanalysis results with
. McGough, "A Learning Community: Teaching Technical Writing in the Chemical Engineering Unit Operations Laboratory," 2014.[4] K. Croker, H. Andersson, D. Lush, R. Prince, and S. Gomez, "Enhancing the student experience of laboratory practicals through digital video guides," Bioscience education, vol. 16, pp. 1-13, 2010.[5] D. E. Berry and K. L. Fawkes, "Constructing the components of a lab report using peer review," Journal of Chemical Education, vol. 87, pp. 57-61, 2009.[6] D. Miller and J. Williams, "Incorporating Peer Review Into The Che Laboratory," presented at the ASEE, Salt Lake City, Utah, 2004.[7] N. M. Trellinger, B. K. Jesiek, C. Troy, J. Boyd, and R. R. Essig, "Engineering Faculty on
constrain our students instead tothink directly about the signal flow through an instrumentation setup. This simple electronicsecosystem also reduces the difficulty of debugging errors, allowing students to make productivemistakes while still completing their lab work. Figure 1. Representative elements of our Electronic Ecosystem. A) Wheatstone Bridge, B) Amplifier Circuit, C) Coupling Circuit, D) Thermocouple Linearization CircuitFor our second problem-solving action, the collection and processing of data, we have avoidedthe common approach of having students analyze their data after they have left lab. Instead, wewant students to do their data processing while they are in lab with their instructors and TeachingAssistants, and we
January 8, 2019]4 Google. G-Suite [Online]. Available from: https://gsuite.google.com/ [Accessed January 8,2019]5 Papert, S. & Harel, I. (1991). “Situating Constructionism.” Constructionism, 36, 1-11.6 Szymula, K.P.; Magaraci, M. S.; Patterson, M.; Clark, A.; Mannickarottu, S. G.; Chow, B. Y.,An Open-Source Plate Reader. ACS Biochemistry 2018; DOI: 10.1021/acs.biochem.8b00952.7 Space.nss.org, “Enterprise In Space Program Announces Winners for Its Print The FutureCompetition to 3D Print on International Space Station” [Online]https://space.nss.org/enterprise-in-space-program-announces-winners-for-its-print-the-future-competition-to-3d-print-on-international-space-station/ [Accessed January 8, 2019]8 Group K Diagonostics, [Online] https
foreach material lie nearly on top of each other, confirming that the stresses due to an appliedbending moment are independent of beam material. (a) Measured strains and linear regression. (b) Stresses computed from strains. Figure 10. Measured strains and stresses computed from strains for Experiment 1.The results plotted in Fig. 11 show the same kind of behavior except now the measured strainsare almost the same (the aluminum and brass are almost coincident) while the stresses computedfrom the strains using the tabulated elastic moduli for each material show distinctly differentproportionalities. These results confirm that strains due to an applied tip displacement areindependent of the beam material. (a) Measured strains and
Paper ID #25563Laboratory Measurement Activities in a First-Year Engineering TechnologyClassDr. Joseph P. Fuehne P.E., Purdue Polytechnic Institute Joe Fuehne received a B.S. degree in aeronautical/astronautical engineering in 1983 from the Univer- sity of Illinois and M.S. (1988) and Ph.D. (1990) degrees in mechanical engineering from Texas A&M University. In between undergraduate and graduate school, he worked for two years in the flight test department at McDonnell Aircraft Company in various locations, including the Naval Air Test Center at Patuxent River in Maryland and the Air Force Flight Test Center at Edwards
Paper ID #27773Design of a Laboratory Testbed for Modeling Industrial ExhaustDr. Gordon P. Smith, Western Kentucky University c American Society for Engineering Education, 2019 Design of a Laboratory Testbed for Modeling Industrial ExhaustAbstractThere are a great many industries in the Kentucky and surrounding areas that utilize natural gasburners in their operation, typically on order of hundreds of thousands of cubic feet per month toliquefy and hold molten aluminum for their die operations. Much of the energy content of thisfuel is consumed in plant operation, but a significant amount of heat is released to the
grade only. In that case,discrete standards were provided in the templates to limit controversy. For example, note in Fig.2 that 1 point for timeliness and 2 points for completeness are allotted for the first draft. The TAgrader made final judgments when there was disagreement among reviewers. Seventy-one percentof students received full credit for the first draft; that number rose to 90% for review and rebuttalstages. The number of late, missing, or incomplete first drafts is partially a result of a lack ofaccountability for participation in the workshops.For the final paper, 86.5% of students met at least ‘B’ standard (80%). This was on par with thosefor the beam experiment report the previous year in which TAs provided a review of a single
) where D = distance of object, T = time elapsed and V = velocity of ultrasonic burst. b. TILT SWITCH We implemented a tilt switch to our circuit so that when the glove is in the downward position (the user’shand is down), the ultrasonic sensors will be deactivated. This will prevent the glove from detecting theground when the user is not using the glove to locate objects in front of the individual. The tilt switch is namedaccordingly due to the metallic ball on the inside of its container that acts as a switch to either complete thecircuit (ON position) or not (OFF position), similar to a push button. These switches were once commonlymade with mercury that was used to complete the circuit if the switch was at a certain angle
in real time during the lab sessions, itbecame clear to me that in most cases the major deficiencies resided in post-lab work and in theirability to submit a coherent, well written final report. Trying to dissect the source and location ofthe deficiencies, I decided to keep track of the performance of the various lab classes with themetric of these parameters. The hope was to be able to characterize with some quantitativemeasures (a) the progress of the class, if any, within the same semester/lab and (b) the progressof the class along the sequence of the four lab courses described above.Accordingly, while all the reports were graded following the syllabus description, I also kept arecord for myself with the marks assigned in each one of the
than the control group.The control group received a manual that was similar to those used in previous years: itcontained step-by-step instructions on the use of different features of the oscilloscope. Thetreatment manual instead contained exercises that gave students significant leeway to teachthemselves how to use the oscilloscope.The difference between these manuals is most clearly illustrated by an example. Figures 1a and1b show exercises from each manual designed to teach the same concept: how to scale theoscilloscope display. It is clear that the control manual is much more detailed.2.4 In-Lab AssessmentThe practicum midterm asked students to interact with the apparatus pictured in Figure 2.Students were tasked with connecting a
-assess their understanding of the material. Several of the questions we use areshown below.“Question 1: Figure 14 Given the circuit of Figure 14 above and the following information: • All of the components are ideal • The operational amplifiers have inputs and outputs that may extend to the power supply voltages • The differential mode gain is 165 Which of the following best describes the amplitude of the voltage at VOut? a) 3.15 volts b) 6.30 volts c) 0.00 volts d) None of the other choices is correct.”The correct answer is c. We
Teachers (AAPT)Recommendations for the Undergraduate Physics Laboratory Curriculum[4] and the AP Physicslearning outcomes from CollegeBoard. After taking into consideration the physics curriculum ofmy university and these nationally accepted guidelines, I idenified four major learningobjectives, each with specific sub-objectives briefly described in Table 1. The detailed LO withits grading rubrics are listed in Appendix A. There are total 12 specific LOs, denoted as LO1.a,LO1.b, LO4.c as such. Each LO is worth of 1% of the total course grade, as the lab portion isonly 12% in my course. All of these LOs are re-assessable using the current lab modules and labresources in my university. Table 1 Learning Objectives in Standard Based
not place an unwarranted level of faith in the results of software simulations.In Part B, students were asked to design a distributed-element commensurate-line low-pass filterin microstrip starting with a normalized 3rd-order low-pass filter prototype. The assigned -3 dBcutoff frequencies of these filters ranged from 1 GHz to 1.75 GHz. Students were also asked toperform a PCB board layout that would be used to generate a physical prototype on which theywould then solder SMA connectors and use a VNA to verify its performance. This extension intophysical prototyping and measurement was intended to give students experience in using RFlaboratory equipment and enable them to correlate theoretical and experimental results.Student Learning
of mixing and heattransfer is possible by video formats. These images are readily compared to finite elementmodeling of fluid flow and heat transfer. Figure 5: Left (a): Infrared camera for thermal imaging silicon solar cells. Right (b): Temperature profile of solar cell under forward bias. Red areas show localized heating due to shunt defects.Figure 6: Imaging of flow through a porous filter on a microfluidic chip. Figure 7: Thermal imaging of fluid flow in microfluidic channels (for microfluidic chip, see Figure 5) Sulfuric acid and NaOH are combined at a junction, without (left) and with (right) active mixing with a magnetic stir bar. The resulting temperature distributions can be assessed with analysis of the thermal image.Discussion and
mix design to achieve a strength of 4000 psi or greater? (b) If the weight of water in the mix remains the same, what weight of cement will you add to the new mix? You may refer to the provided excerpt from ACI 211.1 Specifications to provide an estimate for cement in the new mix design. Assume that the concrete is non- air-entrained. Table A. Insufficient Concrete Mix Design Constituent Weight (lb) Water 300 Portland Cement 480 Coarse Aggregate 1863 Fine Aggregate 1230 4. A sample of five bricks from a large shipment were tested and the average gross compressive strength was 4500 psi with a standard deviation of 750 psi
Georgia Is a lecturer in the School of Electrical and Computer Engineering in the College of Engineering. He has published in the area of automatic control systems. His engineering educational research interests include undergraduate laboratory experience, remote labs, and advancing control theory in undergraduates.Mr. Allen V. Spain, University of Georgia Allen Spain Allen Spain is currently a M.S. Student in the School of Engineering with an Emphasis in Electrical and Computer Engineering at the University of Georgia. He specializes in electronic cir- cuit design, and is the SPOC Hardware Team Lead and is the electronic circuit designer for the UGA Small Satellite Laboratory. He is currently a Research Assistant at
labs and the last labs.(a) First labs Year/Term Lab topic Genre of lab Audience % of report in report total course grade UP Sophomore/Spri Tensile Technical Instructor 5% ng 2018 testing letter WS Junior/Fall 2018 X-ray Email Instructor 5.5% U diffraction OIT Sophomore/Spri Tensile Memorandum Instructor/Hypo- 6.25% ng 2018 testing thetical Client(b) Last labs