A Virtual Hemodialyzer Design Project for First-Year Engineers: An Epistemic Game Approach

Author(s):  
Naomi C. Chesler ◽  
Elizabeth Bagley ◽  
Eric Breckenfeld ◽  
Devin West ◽  
David Williamson Shaffer

Engineering institutions nationwide are pursuing first-year engineering design courses to attract and retain nontraditional students. However, these courses often have high enrollment rates and can be resource intensive. Virtual design projects offer a potential solution to the physical resources requirements but often result in an overly constrained design space, creating uninteresting or non-challenging design problems. We are developing a design problem within a novel virtual environment (i.e., a game) that provides first-year engineering undergraduates with a more authentic engineering design experience and a more complete and accurate understanding of the engineering profession. The design problem presented challenges students to incorporate carbon nanotubes and chemical surfactants into a hemodialysis ultrafiltration unit. Our approach seeks to provide students with experience in the skills, knowledge, values, identity, and epistemology of the engineering profession, which is the epistemic frame of the profession. The virtual environment also provides a uniquely comprehensive platform for assessing the students’ epistemic frame development over time. We anticipate that this approach will be highly engaging to first-year undergraduate engineering students and will help engineering instructors understand how engineers-in-training learn to become engineers.

Author(s):  
Danny D Mann ◽  
Kris J Dick ◽  
Sandra A Ingram

In previous years, several improvements to the teaching of engineering design were made by staff in the Department of Biosystems Engineering at The University of Manitoba. The first innovation occurred when a trilogy of courses spanning the final three years of the program was introduced as a replacement for a single capstone course in the final year of the program. In its original conception, engineering students were to get three opportunities to be involved in design problems originating from industry, with greater expectations with each subsequent experience. A second innovation occurred when technical communication was formally integrated within the trilogy of design courses. This innovation has helped engineering students realize the value of professional communication skills in collaborating with each other and in preparing reports and presentations for an industry client. A third innovation occurred three years ago when the decision was made to allow students to participate in the prototyping of their designs. The so-called “Design Trilogy” now consists of a single course (Design Trilogy I) taken during the second year of the engineering program (which builds upon the first-year design experience with the requirement of a conceptual solution in response to a design problem provided by industry) and two courses taken during the final year of the program. Students are required to have a design completed on paper by the completion of Design Trilogy II and fabrication of the prototype occurs during Design Trilogy III. The student experience in the Design Trilogy, with particular emphasis on curriculum innovations in Design Trilogy III, will be discussed.


Author(s):  
Yong Zeng ◽  
Shengji Yao ◽  
Michel Couturier ◽  
Frank Collins

Recently a new design methodology, Environment-Based Design (EBD) [1, 2] has been developed. In using the model of EBD, three elements are important: primitive synthesis knowledge, primitive environment and primitive solutions. Based on the three elements, three design strategies have been validated in [3] for generating new design solutions: formulating design problems differently, changing the sequence of decomposition of the design problem and extending synthesis knowledge. Increasing the possibilities of generating new design solutions may increase the chance of getting creative design solutions. Thus the three strategies for leading to new design solutions can be introduced into our engineering design education for helping and inspiring students generate creative design solutions. In this paper, we will first briefly introduce EBD model and the three design strategies leading to new design solutions, then explain how EBD can be integrated into the design education of engineering students and elaborate how the design strategies can be used to help students generate different design solutions.


Author(s):  
Daniel Henderson ◽  
Kevin Helm ◽  
Kathryn Jablokow ◽  
Seda McKilligan ◽  
Shanna Daly ◽  
...  

This paper focuses on comparing and contrasting methods for assessing the variety of a group of design ideas. Variety is an important attribute of design ideas, because it indicates the extent to which the solution space has been explored. There is a greater likelihood of successfully solving a design problem when a more diverse set of ideas is generated in the early stages of design. While there are three existing metrics for variety, it has not been established how well they correlate with each other, so it is unknown whether they provide similar assessments of variety. This uncertainty inspired our investigation of the three existing metrics and, eventually, the development of a new variety metric — all of which we compared statistically and qualitatively. In particular, 104 design ideas collected from 29 sophomore mechanical engineering students were analyzed using the existing and new variety metrics. We conducted correlation analyses to determine if the four metrics were related and to what degree. We also considered the qualitative differences among these metrics, along with where they might be used most effectively. We found varying levels of statistically significant correlations among the four metrics, indicating that they are dependent. Even so, each metric offers a unique perspective on variety and may be useful in different situations.


Author(s):  
Zahed Siddique

In most instances engineering design courses are offered during the senior year of the undergraduate curriculum. These senior level design courses allow the students to apply different engineering concepts to design a product, with the expectation of preparing engineering students for a distributed and global workplace. Another possible alternative is to provide a simulated education environment where students can design products in a distributed and collaborative environment. The use of Internet in education has opened the possibility to explore and adopt new approaches to teach distributed collaborative engineering design and analysis. The Internet Design Studio, presented in this paper, tries to fulfill this need. In the Internet Design Studio each student is provided with a virtual design studio space for each project. The design studio spaces can be imagined as a virtual space containing design tools, applications, software and theoretical materials that facilitates students to design and perform analysis. Conceptually, a student enters the studio space and grabs appropriate tools to perform different design tasks. The design tools in the Internet Design Studio are web-based and support collaborations by allowing multiple users to view, discuss, create and utilize same models of the product to perform analysis. In this paper the framework of the Internet Design Studio is presented. The applicability of the framework is demonstrated through the use of several multi-designer collaborative design tools.


Author(s):  
Jining Qiu ◽  
Bo Zhang ◽  
Huimin Dong ◽  
Yuan Gao

The ability to solve engineering design problems using academic knowledge flexibly is essential for mechanical engineering students and is also quality that employers look for. This paper introduces how students could explore and experience the process of mechanical design in the course project of Theory of Machines and Mechanisms (TMM) in Dalian University of Technology (DUT) through sharing the design process of accelerator (gear-box) in wind power generator by one representative team of students in the course project. Firstly, design requirements are set based on industrial need and the choosing of the best scheme of multi-stage gear train is conducted. Following that is the design of kinematic parameters of gears and the evaluation of selected system. Then, a possible solution to control the input speed of the generator is proposed. In the end, a survey to 279 students who participate in the course project shows the importance of course project in cultivating their ability to apply knowledge in design.


Author(s):  
Jeffrey R. Mountain

It has been stated that the topic of design is not conducive to assessment by concept inventory. While design problems are more ambiguous than problems in analytical subjects, such as physics, statics, or thermodynamics; the broader design education community of scholars might agree on a set of concepts that are essential to the fundamental understanding of design. Following a review of textbooks, industry interviews, and other literary sources, this paper will propose a set of commonly accepted overarching concepts that might form a nucleus of an engineering design concept inventory. This is intended primarily to initiate a dialog among the design engineering education community about the future development of a design concept inventory and it’s applicability in assessing the design content knowledge of undergraduate engineering students prior to entering the profession as graduate engineers.


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