Teaching Design and Strength of Materials via Additive Manufacturing Project-Based Learning

Autor/inn/en	Ellis, Brett D.; Graveson, Jeff
Titel	Teaching Design and Strength of Materials via Additive Manufacturing Project-Based Learning
Quelle	In: Advances in Engineering Education, 10 (2022) 3, S.19-45 (27 Seiten) PDF als Volltext kostenfreie Datei Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
Schlagwörter	Engineering Education; Capstone Experiences; Class Activities; Active Learning; Group Activities; College Students; Curriculum Enrichment; Educational Strategies; Printing; Manufacturing Industry + Suchen Sie Ihr Suchwort? Ingenieurausbildung; Aktives Lernen; Gruppenaktivität; Collegestudent; Curriculum revision; Curriculumreform; Curriculum; Lehrplan; Reform; Lehrstrategie; Buchdruck; Drucken; Fertigungswirtschaft; Produzierendes Gewerbe
Abstract	Graduating approximately 150,000 engineering and engineering technology students per year, the engineering education system seeks to teach students to solve problems via analysis and design. Unfortunately, many curricula emphasize analysis at the expense of design, often relegating design activities to cornerstone and capstone design courses and leaving students ill-prepared for substantive capstone projects and post-baccalaureate practice. This work seeks to address this problem by introducing an appropriately-scaffolded design-analyze-build-test spine within an existing Mechanical Engineering Technology second-year Strength of Materials course. The 33-student cohort self-selected into 11 teams of 3 students per team to design, analyze, and additively manufacture 6-inch-long by 1-inch-maximum-width by 1-inch-maximum-height 3D-printed polylactic acid (PLA) beams weighing [less than or equal to] 45 grams. Beams were then three-point loaded during a culminating competition. The project intentionally rewarded multiple, competing objectives, including beam mass, maximum force at a 0.050-inch deflection, accuracy of analysis, and creativity. Over 29 calendar days, the project consumed approximately 1.5 in-class hours and was completed using only commonly-available university hardware, e.g., 3D printers and a load frame. Formative and summative surveys were administered to assess student task value, self-efficacy, and opinions. Results indicated that students were primarily motivated by utility and intrinsic task value. Despite 74% of the students having minimal experience with additive manufacturing, 75% of students felt their team had appropriate skills to complete the project. In addition to 84% of students stating the project reinforced their understanding of strength of materials, 95% of students stated that the project increased their understanding of open-ended design and the interconnection between material properties, materials processing, and strength of materials. This work is important in that it demonstrates a case study on how to incorporate design concepts within an engineering analysis course and that analysis and design concepts may coexist within a course. (As Provided).
Anmerkungen	American Society for Engineering Education. 1818 N Street NW, Washington, DC 20036. Tel: 412-624-6815; Fax: 412-624-1108; Web site: http://advances.asee.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01