Volume 9: Engineering Education最新文献

{"title":"A Proposed New Molecular Model for Liquids and Solids","authors":"L. Howlett","doi":"10.1115/imece2021-70484","DOIUrl":"https://doi.org/10.1115/imece2021-70484","url":null,"abstract":"\u0000 Proposed: free, unconstrained molecules exist in pure liquids and solids. This new molecular model is a direct development from using vapor pressure as a primary variable for understanding seed storage and osmosis. Current seed models consider relative humidity as an important variable. Current understanding of osmosis considers chemical potential, concentration, and osmotic pressure as important variables.\u0000 My new concepts began 25 years ago with an engineering consulting project to design and build a warehouse for storing seeds. Solutions for design changes and supplier errors led to a new viewpoint: vapor pressure is an important variable for understanding stored seed. After extending this idea to modeling moisture transfer between a seed and its environment and two rejected papers about seeds, my model was different from the current textbook explanation for moisture transfer across a membrane: osmosis. After studying osmosis and its history, I concluded that vapor pressure is the driving force for moisture transfer across a membrane. The vapor pressure concept introduces a physical model for the osmosis process.\u0000 All I did was reexamine seeds and osmosis from a new viewpoint. Vapor pressure was introduced as an important variable. Since vapor pressure is the force per unit area resulting from molecular collisions, and osmosis occurs with liquid on both sides of the membrane, I proposed that free molecules must exist in pure liquids and solids.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114958696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Project Based Course Enabled Nanotechnology Education for Senior Level Undergraduate and Graduate Students","authors":"Hongmei Dang, Pawan Tyagi, E. Ososanya, Kate L. Klein","doi":"10.1115/imece2021-68827","DOIUrl":"https://doi.org/10.1115/imece2021-68827","url":null,"abstract":"\u0000 National Science Foundation funding was obtained to nucleate nanotechnology curriculum and start a senior-level nanotechnology course cross-listed in the Mechanical Engineering and Electrical Engineering department. The key components are implementation of lectures integrated with hands-on laboratory experience, research seminar and evaluation. Laboratory projects of nanofabrication include metal-oxide-semiconductor capacitor and nano-structured solar cell for undergraduate and graduate students respectively. The assessment of course materials and master’s understanding was evaluated by surveys and direct observations of student performance. In spring 2020, statistical data from survey demonstrated that graduate students responded overall high rate for all of the course materials and undergraduate students gave high rate for majority of course materials except thermal evaporation fabrication project. A significant standard deviation for rating of thermal evaporation fabrication process indicated that practical engineering projects are challenging for some undergraduate students.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114585423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wind Tunnel Data Acquisition System","authors":"Riley Bishop, Wesley Fisher, A. Doom, Elena Hollingsworth, Brian Mazzoni, M. Chidurala","doi":"10.1115/imece2021-70458","DOIUrl":"https://doi.org/10.1115/imece2021-70458","url":null,"abstract":"\u0000 A team of mechanical engineering students at Western Kentucky University designed a subsonic wind tunnel data acquisition system through LabVIEW to analyze the forces acting on an object in external air flow. The experimental setup provides future fluid mechanics laboratory students a hands-on procedure to study aerodynamic forces such as lift and drag. The physical models tested include two 3D-printed cylinders and a NACA 0012 airfoil placed in the wind tunnel test section. The cylinder shape was chosen, because it provides a simple flow field that can easily be used to verify the accuracy of the system, and the NACA 0012 was selected for the simplicity of symmetric airfoil theory calculations. Pressure transducers were used to measure pitot tube velocity readings as well as the pressure at 16 points around the upper 180 degrees of the objects. The resulting pressure distribution on the surface of the bodies was then applied to calculate lift and drag forces acting on the objects. A force balance was also designed to securely mount objects in the wind tunnel while directly measuring the total lift and drag forces, calculating the moment about the leading edge, and monitoring the angle of attack. The force balance results can be used to verify the experimental results from the pressure distribution data. A LabVIEW program was written to communicate directly with data acquisition hardware (NI CompactDAQ), set experimental parameters such as air flow speed and sample rate, record data, and interpret the results through a single user interface. Inviscid theory was used to theoretically predict the ideal drag acting on the cylinder, and symmetric thin airfoil theory was used to predict the ideal lift acting on the airfoil. Along with theoretical models, CFD analysis was performed to simulate a controlled experiment and validate the experimental results. Though experimental data has not yet been collected, the LabVIEW code has been tested using simulated data, and the accuracy of the pressure transducers has been confirmed by comparing pressure readings to controlled manometer readings. The system is expected to provide accurate data limited to the maximum speed of the subsonic wind tunnel currently owned by the Thermofluids Laboratory at Western Kentucky University. Future improvements of this project could include purchasing a more capable wind tunnel to run experiments in the turbulent flow regime, as well as a larger test section to avoid error from wall effects. This experimental set up has laid the groundwork for a multitude of future studies. It can be used to observe aerodynamic forces acting on more complex NACA airfoil shapes, rotating plates, cylinders and spheres, wind turbine blades, ground vehicles, airplanes and more.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114646309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of a Robotic Vehicle for ASME Student Design Competition 2021","authors":"Wojciech Kochanczyk, Vedang Chauhan","doi":"10.1115/imece2021-72195","DOIUrl":"https://doi.org/10.1115/imece2021-72195","url":null,"abstract":"\u0000 Robotics is a very active and diverse field with new applications found daily for emerging designs. This year ASME SDC emphasizes one such application with small RC robotic vehicles. These vehicles are primarily cargo carriers with the ability to harness wind and solar renewable energy sources to recharge their limited battery. Analog to modern electric battery-powered cars the robot utilizes a single AAA battery which was the biggest challenge of the competition. To satisfy all the requirements posed by the competition, a brand new vehicle platform was developed including both wind and solar charging capabilities. As part of the development process a new drive train, control system, wind turbine, and robot frame was developed. For performance maximization, all outsourced, as well as custom-designed components, were extensively researched and tested. Using test data and CAD software the final design was created including all the components selected during testing. This produced a successful prototype satisfying all competition requirements and being accepted to take part in SDC 2021. The maximum score achieved by the robot reached 0.4488 points using the given scoring matrix, however, it did not qualify for the final rounds of the competition. This project indicated several ideas that may improve the performance of small robots, such as the effective use of solar panels, the creation of systems with low power requirements, as well as the use of RC toys to develop more complex robotic vehicles.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114665755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aligning Research Objectives With Student Learning Outcomes and Sustainability Objectives in Student Engineering Development Project","authors":"Mohammad Al-Rawi, P. Chand, Jai Khanna","doi":"10.1115/imece2021-67913","DOIUrl":"https://doi.org/10.1115/imece2021-67913","url":null,"abstract":"\u0000 To generate student projects that effectively inform tasks on a main project (MP), and enable students to participate in the development of a solution to a problem that affects user satisfaction with renewable energy solutions. This research contains a reflection on the mapping of project’s requirements to learning outcomes of the engineering development project (EDP) paper. Alignment to the goals and learning outcomes of the course will be discussed as well as broader implications for service learning and the potential for the project to be adapted to meet broader institutional objectives such as sustainability will be presented.\u0000 In conclusion, this paper describes the mapping of the graduate attributes and the learning outcomes in student projects to objectives of the MP, reflects on the achievement of these learning outcomes in the context of a project that fully explores all of them, and describes the service-learning potential for this type of student project.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128601272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mobile Solar Powered Instructional Technology Equipment for Online Teaching and Learning During COVID-19 Pandemic for Remote Community","authors":"Ronald M. Galindo, Jun-Jun A. Obiso","doi":"10.1115/imece2021-69089","DOIUrl":"https://doi.org/10.1115/imece2021-69089","url":null,"abstract":"\u0000 As the COVID-19 pandemic continues globally, the disruption of the traditional face-to-face classes in educational institutions is evident. In the Philippines, these educational institutions have shifted to Flexible Learning System (FLS). However, in the implementation of FLS, the teachers and the learners in the remote communities experience internet connectivity problems. This problem is minimized using mobile solar-powered instructional technology equipment for online teaching and learning activities. This equipment is designed to carry all the necessary accessories in the online delivery of FLS like television, solar panel, WiFi routers, inverters, and other power accessories. It is made of Polypropylene Random Copolymer (PPR) pipe material and is mounted on a four-wheel bicycle. Several tests were conducted to evaluate the performance of the equipment. These were the following: stress analysis, solar energy utilization test, portability assessment, connectivity speed test, and quality assessment. Results suggest that the developed equipment is ready for actual deployment in a remote community in the Philippines. With such deployment, internet connectivity problems can be minimized. As a result, the less fortunate learners can have free and reliable internet access. Moreover, a possible related future work is designing bigger mounting equipment that can carry more accessories due to its portability and mobility aspects.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133785111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of Systematic Design Methods Used in Senior Design Projects","authors":"A. Xiao, G. Gailani, Andy S. Zhang","doi":"10.1115/imece2021-72192","DOIUrl":"https://doi.org/10.1115/imece2021-72192","url":null,"abstract":"\u0000 System Engineering (SE) is utilized in structuring a product development process into simple and collaborative activities, while at the same time, supporting engineers’ decision-making. In most undergraduate engineering design courses, SE was taught by assigning industrial-like projects in which teams of students developed products using certain design methods while following structured design process. It has been observed that some design methods were adopted naturally and used effectively by students while some are less preferred. This is due to various reasons, from strict project deadlines to the fact that some methods are difficult to understand. In this paper, we studied these design methods in the context of senior design projects. We have observed students’ applications of these methods and conducted surveys to assess whether they believe these methods helped their design activities. This study will help us understand how to help students gain knowledge in product development through project-based learning, as well as provide some insights on how inexperienced engineers may use various design methods.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126967274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Journey Mapping the Virtual Prototyping Experience","authors":"G. Moore, V. Rao, A. Agogino, K. Goucher-Lambert","doi":"10.1115/imece2021-71618","DOIUrl":"https://doi.org/10.1115/imece2021-71618","url":null,"abstract":"\u0000 Reframing failure, individual problem solving, and access to technology are signatures of the “maker movement,” which directly inspired university makerspaces across the globe. In particular, university makerspaces have become a significant resource to students taking courses that require the creation of tangible prototypes. While research investigating a student’s experience prototyping in a makerspace is growing rapidly, not much has been done to investigate the student prototyping experience in exclusively virtual settings. The goal of this study is to identify trends in the virtual prototyping experience with intentions of informing university instructors, makerspace facilitators, and students of where to anticipate struggles and frustration with the virtual prototyping experience. This study uses journey maps (a qualitative design method) to investigate the virtual prototyping experience for 12 undergraduate students, of diverse academic disciplines, at an R1 university in the United States. Results from this study suggest that the functional prototyping experience (which emphasizes independent contributions towards a tangible product) generates more emotional volatility than the experiential prototyping experience (which emphasizes collaborative efforts toward a final prototype). Other notable results include statistically significant differences between Female and Male self-reported emotional levels at the beginning of the experiential prototype journey.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123832345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Targeted CAD/CAM Workshops for Freshmen to Improve Overall Performance","authors":"Tikran Kocharian, S. Manoharan","doi":"10.1115/imece2021-70652","DOIUrl":"https://doi.org/10.1115/imece2021-70652","url":null,"abstract":"\u0000 Introduction to Computer Aided Design (CAD)/Computer Aided Manufacturing (CAM) is typically covered at the freshman level. This course is especially crucial for institutes where students engage in cooperative education with employers in the manufacturing industry. In addition, given the demanding nature of the course, retention at the freshman level has been a persisting issue. The culminating experience for this particular course requires all students to take the Certified SolidWorks Associate (CSWA) exam. Unfortunately, 54.7% of the students failed the CSWA exam in the previous offering. A major issue has been the insufficient course contact hours for this content-heavy course. In addition to CAD/CAM introduction, there are several other courses in the freshman sequence resulting in a total class time of only 50 minutes per week. Taking this into consideration, targeted practical workshops were held every three weeks in the latter half of the semester to better prepare the students. The workshops were carefully designed to effectively cover the following areas: fluency in SolidWorks, critical thinking and decision making, design intent, CAD management, and software customization. A total of three workshops were held remotely for the students enrolled in a section taught by the primary author. The control group comprised of the remaining students enrolled in other sections. The student response for the workshops was overwhelmingly positive, and there was an evident improvement in the performance on the CSWA exam. All students who attended the workshop passed the certification exam thus improving the overall course failure rate by over 10%.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125633141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distance/Online Engineering Education During and After COVID-19: Graduate Teaching Assistant’s Perspective","authors":"Vishnu Kumar","doi":"10.1115/imece2021-72341","DOIUrl":"https://doi.org/10.1115/imece2021-72341","url":null,"abstract":"\u0000 The COVID-19 pandemic has forced universities across the globe to switch to distance/online mode of teaching since Spring 2020. The engineering college teaching community including graduate teaching assistants were severely affected by this change. Even though numerous articles cite a variety of strategies for online teaching for full time instructors, it has been identified that there are limited resources tailor made for graduate students who are teaching engineering classes. This article tries to bridge this gap by exploring some strategies for graduate teaching assistants to help them prepare for online classes and overcome the challenges posed by online/distance education from a graduate student’s experience and perspective.","PeriodicalId":187039,"journal":{"name":"Volume 9: Engineering Education","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124119293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}