AC 2011-784: REDISCOVERING RECIPROCATING STEAMMatthew A. Carr, U.S. Naval Academy Commander, US Navy PhD, PE Permanent Military Professor Nuclear Submarine Officer Member - The Newcomen Society for the History of Engineering and Technology Page 22.1227.1 c American Society for Engineering Education, 2011 Rediscovering Reciprocating Steam A Fresh Look at Historical Steam Power (Reciprocating Steam 101)introductionThe purposes of this article are: (1) to describe the most significant steam engines from the earlyperiod of steam power
Engineering Education, 2011 Project-Based Service-Learning and Student MotivationAbstractWe know from motivation theory that enhanced motivation in students is positively correlatedwith engagement and active learning, interest, and value. We know less about the types ofinstructional strategies and curricular interventions that work to enhance student motivation in atypical engineering course. Grounded in motivation theory, the purpose of this research is toevaluate how the context of project-based service-learning affects aspects of student motivation(particularly interest and engagement) in a required undergraduate Mechanical Engineeringcourse.Our research aims to answer: 1) How does project-based service learning affect
in anactive learning environment. Page 22.1121.3 1Introduction In the quest to improve engineering education, the active learning methods must bedesigned, assessed, and implemented effectively. Even though active learning is frequently usedin other disciplines, these pedagogical techniques have not yet been fully developed inengineering curriculum, especially within core courses [1-3]. For this current work, we consideractive learning to be anything that goes beyond the traditional model of students passivelylistening to a lecture. Hands-on activities, problem based learning, interactive
department was the integration of graded requirements amongst the three programs.Each team had its own mechanical engineering faculty advisor, and the multi-disciplinary teamincorporated faculty advisors from the electrical engineering and computer science programs.Advisors attempted to synchronize courses milestones and minimize duplicate gradedrequirements. Despite this effort, multi-disciplinary team members on an end-of-course surveystrongly disagreed with the statement “Departmental submissions were standardized.” Due tothis, standardization was a priority for year three and accomplished before cross enrolling cadets.Advisors allocated the remaining Year 1 funding not directly spent on airplanes toward programimprovements as shown in Table 1
limited by the field oftechnology and the engineer’s or design team’s understanding of the field. Without sufficientunderstanding of an emerging technical field, ideation may be hampered by reinventing theproverbial wheel or by a lack of knowledge of the underlying physical principles and state oftechnology. When starting to solve design problems, designers may not fully benefit fromideation methods alone due to problems such as design fixation [1-6]. Pursuing flawed designsor designs that will underperform existing solutions may likewise occur from the lack ofunderstanding of the field. Existing research examines supplementing the ideation process as well, such as seekingand using analogies, fostering creativity and examining
. Page 22.1079.4 A testing phase in which design requirements are verified and necessary modifications are made.Deliverables for this class include a Design Requirements Document, a Design Report andCritical Design Presentation and Review with the project sponsor, a Final Project Report andhardware demonstration through a tradeshow-style Senior Design Expo. Student workload istypically high due to the open ended nature of the projects, the amount of detail work necessaryand the iterative nature of the design process. Upon completion of the class, students should beable to: 1. Apply a formal engineering design process to solve an open-ended, externally supplied engineering design problem. 2. Work effectively on an
. The paper attempts to determine if there is a lack of thermal-science projects in capstone courses and if so what the reasons are. A third purpose of thepaper was to probe the feelings of non-thermal faculty teaching capstone towards thermalprojects, and whether or under what conditions they would be willing to offer morethermal design projects in the future. The paper also poses a few general questionsregarding the role of thermal sciences in capstone design and suggests a strategic way forimplementing more thermal science capstone projects.IntroductionMechanical engineering emerged as a field during the industrial revolution in Europe in the 19thcentury.1 Thermal sciences is a term usually given to a group of mechanical
physical understanding of energy, fluid mechanics, andheat flow are difficult to grasp. The students have observed solid mechanical kinematics anddynamics first-hand all of their lives, but energy, fluid flow, and heat flow are sometimes notreadily visualized.With this in mind, a useful method to explain the concepts is via everyday/familiar/folksyanalogies. This paper contains a sampling of some analogies that can be used to teach thermalfluid concepts as varied as entropy, the no-slip condition, velocity profiles & boundary layers,numerical marching solutions for heat flow, and more. The authors also offer advice for creatingand using your own analogies, and intend to encourage the reader to add to the growing list ofteaching analogies.1
2010 ASEE AnnualConference and Exposition. This paper presents the outcomes of all the past three offeringsincluding evaluations and assessments, our findings, and student deliverables. These analyticalresults will improve our understanding of effective approaches to teaching interdisciplinarycourses that involve engineering and non-engineering disciplines in undergraduate collaborativeproblem-solving environments.1. IntroductionInterdisciplinary education is becoming increasingly important in preparing undergraduatestudents to be able to participate in the emerging knowledge-based economy and meet complexsocial demands in the modern world1,2,3,4. It has grown at a progressively rapid rate in recentdecades. More and more universities and
, the students were given the opportunity to demonstrate that the principles taught in this Page 22.1221.2dynamics course can be used to effectively and accurately analyze a real-world event such as anactual on-road vehicle rollover. Figure 2 – Front view of 1994 Nissan Pathfinder with relevant cross-sectional geometry Table 1 – Vehicle Center of Gravity (CG) positions and Orientations
interests of students.ProcedureAt some level most cities/states/regions are cognizant of any noteworthy infrastructuredevelopments and feature at least some mention of them in “chamber-of-commerce-like” literature or in tour-guide narrations. Once a likely and interesting engineeringsystem has been identified, the following procedure can be used to develop one ormore engineering exercises or problems: 1. Ask a tour guide or consult printed information for -the official name -additional information 2. Ascertain whether or not the system has the potential to be useful as an engineering education example 3. Using a search engine, such as Google, find out the number of hits as an indicator
: Exergy balance: Xin – Xout - Xdestroyed = ΔX where Xin – Xout = Σ(1 – To/Tk) Qk + WuThe relationship among the useful work, entropy generation, irreversibility and reversible workis written as: Irreversibility: I = Xdestroyed = To Sgen Reversible work: Wrev,in = Wu,in - Xdestroyed for work-consuming systems Wrev,out = Wu,out + Xdestroyed for work-producing systemsSecond-law efficiency is defined as the ratio of the actual thermal efficiency to the maximumpossible thermal efficiency under the same conditions. For work-consuming systems the second-law efficiency can be written as: ηII = Wrev, in / Wu,inIt was recently noticed by the
Page 22.1152.2student population is diverse in terms of age and experience, with a majority of students workingfull time in technical fields and continuing their education towards an engineering bachelordegree at the same time.VibrationsThe “Vibrations” course is a 4-credit, upper level required course in the Mechanical Engineeringprogram. The textbook used in the course is “Mechanical Vibrations” by S. Rao, now in its fifthedition6. The topics covered include single- and two-degree of freedom systems, free and forcedvibrations, an introduction to multi-degree of freedom and continuous systems, determination ofnatural frequencies and mode shapes, and vibration control.The Student Learning Outcomes are:1. Formulate and solve free vibration
significant grade distributions for the same coursedescription, educational objectives, and textbook. Instructors often have different standards andgrading philosophies. What is required to earn an “A” in one instructors class is different fromwhat is required by another. It appears there is little consensus regarding the value of grades andsome tend to discount the importance of grades because significant difference exist. There hasbeen a trend to issue a greater number of higher grades and this has led to discussions aboutgrade inflation and the inherent meaning of grades.1-4 Given the importance of grades and thestudent’s Grade Point Average (GPA), some have proposed that institutions report both thegrades issued by the faculty as well as
principles: 1.) Model Construction: Requires the development of a model or decision algorithm. 2.) Reality: The MEA must be set to a relevant engineering application. 3.) Generalizability: The resulting model should apply to other similar applications. 4.) Self-Assessment: The students must be able to verify the quality of their own work. 5.) Model Documentation: Requires a response or memo describing the model. 6.) Effective Prototype: Ensures the involvement of key concepts usable in future work. Page 22.1519.3These principles are maintained to ensure that the MEA research is consistent and effective. Forthe research in this paper, the
design concepts. Once severaldesign concepts meeting the constraints were developed, they were ranked according to how wellthey fulfilled the criteria.Students developed the initial project constraints for the project before traveling to visit andsurvey the customer i.e., GCROA outfitters. Table 1 shows the project’s criteria and constraints. Page 22.1225.4 Table 1. GCROA Capstone Project Criteria & Constraints Constraints Criteria1. $5000.00 budget 1. Least possible time for assembly2. Designed by end of fall semester 2. Least possible time for
the engineering profession will broaden greatly or the society will suffer because thematching will be too haphazard.”1 While some may argue that the educational system in the U.S.remains the envy of the world, others are not as sanguine. Massive investments are being madein many countries, both in Asia and the Middle East, in higher education. Multinationalcorporations have the ability to source their engineering expertise worldwide. If the mechanicalengineering profession within the United States is to remain viable, it will depend on the abilityof U.S.-based mechanical engineers to provide continued value and expertise to industry andgovernment
formulas with the method of superposition regarding (a) theirmethodology and pedagogy, (b) the availability of a one-page excerpt from the method of modelformulas, (c) the availability of a one-page collection of deflection formulas of selected beamsfor the method of superposition, and (d ) assessment of their effectiveness in solving problems ofreactions and deflections of beams in several identical given problems.I. IntroductionBeams are longitudinal members subjected to transverse loads. Students usually first learn thedesign of beams for strength. Then they learn the determination of deflections of beams under avariety of loads. Methods used in determining statically indeterminate reactions and deflectionsof elastic beams include: 2 - 1 3
mechanics. The proposed clinical question- “what is the clinical significance of fracture comminution and post-operative cortical contact?”– clearly relies on concepts from mechanics of materials and allowed for the opportunity ofreinforcement and application of these concepts for the students.In a continuous effort of educational improvement, faculty evaluate projects using ABET a-kobjectives[1], rating the project on a 1-5 scale for meeting the objectives as stated in thedepartment goals and providing supporting evidence. The evidence for achieving the outcomesoccurs in many forms such as weekly team meetings, work by students as witnessed by facultyon aspects of the project (i.e. lab machine training or assisting/reviewing calculations inproblem
CAD drawings of all manufactured parts required for thedesign, calculations supporting the key parameters for the chosen design, as well as othervelocity and acceleration plots which may be applicable to a given project. Students are alsogiven the option of constructing a physical prototype of their design for extra credit. Eachprototype is evaluated for functionality and compliance with design criteria.MotivationDynamics is a difficult subject, assert Jolley et al.1 in discussing their own Lego®-based designproject. It brings together many concepts from math and physics that students have previouslyseen often only in isolation. Further complicating the subject, many of the results and conceptsof Dynamics are non-intuitive. These authors
highwaysign structure under combined loading.Overarching problems are used in two ways within these courses. First, they are used as anintroductory context slide at the beginning of each lecture. This facilitates tying the lecture toreal world applications and previous and future lectures. Each overarching problem is solved bystudents in a step-by-step fashion in a 2-1/2 hour recitation period, in which students workthrough individual mechanics steps in a structured fashion with assistance from instructors asnecessary.Overarching problems have many potential pedagogical benefits, including presenting “real”engineering problems early in the curriculum, providing the context for simple “tool-like”mechanics concepts, and illustrating the
relationships of interest, the number ofstudents in the test section to do so was half the number of students in the control section. Inaddition, most of students in both the test section and the control section had difficultyappropriately synthesizing the various concepts applicable to the final materials test.Confounding factors that may have contributed to these results are discussed. In addition,suggestions are presented to guide further study of how activities can be better used to integrateunderstanding of concepts.IntroductionBackgroundCompartmentalization often hinders students from seeing the interrelationship among varioussubjects they are studying.1 In Mechanics of Materials, where many topics are presented duringthe course of the semester
), and translate these ideasinto tools that support effective instructional practices. Ongoing work in Statics [1] is aimed atimproving student analytical problem solving skills. Predicated on a model that integratesliterature on problem solving, representational transformation, and prior knowledge; this firstphase identified where students encountered difficulties in the problem solving process.Continued work [2] in Statics, and parallel work, involves the use of Tablet PC developed videosto support student learning. Feedback from these efforts informed the design of the video modulepresented herein.The objective of this paper is to encourage instructors of statics and strength of materials atinstitutions around the country – and the world – to
Missouri Universityof Science and Technology experienced a dramatic increase in teaching load starting inapproximately 2006 due to increasing enrollments and decreasing funding. Figure 1 shows thenumber of lecture students taught and laboratory students supervised by a single instructor overthe past ten years. Included are enrollments for all of the instructor’s courses and not just theintroductory mechanics courses. To cope with this increasing workload, mechanics of materialsinstructors began experimenting with that course’s exam format in 2006 and its presentationformat in 2008. Page 22.1446.2 Figure 1. Changes in teaching load
science and engineeringprograms. The data for Hispanic graduates from science and engineering programs shows thesituation needs to be corrected right away [1]. Therefore, many initiatives are focusing onminority populations in order to sustain engineering education and address the rapidindustrialization, economic development, and innovations that are taking place in the world.Strategies employed to recruit and retain students in engineering include a variety of approaches,such as hands-on activities, summer workshops, competitions, research experiences, and pre-engineering programs [2-6]. This paper describes a recruitment and retention program that isdesigned to increase the number of minority students in engineering by forming Pre
ofopportunities open to all.Engineering Professional Societies and Engineering Education Related Sites Page 22.1065.3Professional societies for engineers provide scholarships, fellowships, awards, conferences,competitions, publications, and resources for students, parents, educators and professionalengineers. Table 1 shows a listing of engineering professional societies. The computer scienceand engineering technologies societies are included in this table because the computer scienceand engineering technology programs are often housed in the college of engineering. The tablealso includes architecture, because students may want to explore the
language skills inlimited English proficiency (LEP) students by promoting inquiry and student discussion 10.Generally the benefits of these types of activities are limited primarily to students who self-selectinto after-school robotics clubs or summer programs, or who live in neighborhoods whereparents have the time, resources and knowledge to successfully coordinate and coach a FLLteam. Without intervention, these common pathways to participation too often rule out activeinvolvement by low income students in many predominantly minority schools.The State of Georgia Figure 1. Georgia Participation in FLLhas a highlysuccessful state FLL Students Teamstournament series that 2000
indications from thefirst two cohorts indicate success [1]. Those analyses and early indications of SEEP success ledto the realization that a relatively near term solution to our highly publicized and welldocumented United States engineering pipeline challenge is within our grasp, if we (the USA)have the resolve to make it happen. The solution proposed, documented and quantified is to usethe supply of US citizen/permanent resident high school graduates with Math ACT scores in the17-25 range, coupled with Summer Engineering Enrichment Programs or SEEPs, andengineering scholarships and/or stipends, at all ABET accredited engineering programs at publicuniversities (partnered with local Community Colleges) to more than double the number of BSengineer