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Machine Design: Redesigned

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2015 ASEE Annual Conference & Exposition


Seattle, Washington

Publication Date

June 14, 2015

Start Date

June 14, 2015

End Date

June 17, 2015





Conference Session

Manufacturing and Machine Component Design

Tagged Division

Mechanical Engineering

Page Count


Page Numbers

26.1102.1 - 26.1102.10



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Paper Authors


George Youssef California State University, Northridge Orcid 16x16

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Dr. George Youssef received his Ph.D. in Mechanical Engineering from University of California Los Angeles in 2010 and joined the faculty at California State University Northridge as Assistant Professor of Mechanical Engineering in 2011. His research interest is in the general area of solid mechanics with focus on nontraditional materials such as polymers, composites, and smart materials. His research contribution in dynamic properties of shock loaded materials, interfacial strength of direct bond wafers, environmental degradation of polymers, and biomechanics of walking. His research has been supported by National Science Foundation, Department of Defense, and private industries. Dr. Youssef was recognized by San Fernando Engineers Council as Distinguished Engineering Educator for 2014.

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J. Michael Kabo California State University, Northridge

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Dr. Kabo received his PhD from UC Berkeley in Applied Mechanics in 1980. After a 23 year career conducting biomechanics research at UCLA he relocated to California State University, Northridge to become more engaged in teaching. He is currently a Professor in the Department of Mechanical Engineering where he also serves as Mechanical Engineering Graduate Coordinator and Course Coordinator for Machine Design.

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Machine Design: RedesignedMachine design is a cornerstone foundation course in any Mechanical Engineering program. Thetraditional objective of this course is to engage students with analysis techniques to guard againstspecific failure modes or to predict a product’s life cycle based on a loading scenario. Generally,the course is taught by introduction of a topic first, e.g. static failure criteria, then examples arepresented and homework sets are assigned to allow students to practice and sharpen their problemsolving skills. The current methodology lacks the implementation of the complete engineeringdesign process and the integration of other knowledge domains such as manufacturing.Additionally, the current course structure does not usually stimulate creativity necessary for thedesign process (ideation) or train students on decision making based on objective criteria. Thispaper discusses a revised course structure developed over the past few years for a morecomprehensive approach to machine design. The new course structure is hinged on the applicationof engineering design process, knowledge integration from prior courses as well as industrialpractice, and adoption of design matrices as an objective decision making tool. In addition to thetraditional pedagogies in teaching machine design, a project based on current customer-need oreconomical challenge is integrated in the course. Through the project students learn to: 1) createthe design envelop based on a provided statement or requirement document; 2) define specific,meaningful, and measurable goals; 3) synthesize creative ideas to solve the problem; 4) performpatent search to verify the innovative nature of their ideas; 5) produce a design matrix withevaluation criteria based on the goals and expected functionality; and 6) perform in depthengineering analysis based on mechanics of materials, manufacturability, assembly, and packing.The inclusion of an intensive writing and presentation experience with critical feedback causesstudents to continuously reflect on the elements of the complete design process throughout thesemester. It was found that this approach produces students who are ready for their senior designprojects and engineering practice. Students noted increase in their understanding of machinedesign concepts as an integration of all their prior preparatory training. The effectiveness of therevised course structure was evaluated through surveys of students and capstone course instructors.

Youssef, G., & Kabo, J. M. (2015, June), Machine Design: Redesigned Paper presented at 2015 ASEE Annual Conference & Exposition, Seattle, Washington. 10.18260/p.24439

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