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Introducing 3-D Printed Specimens to Mechanical Engineering

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2019 ASEE Annual Conference & Exposition


Tampa, Florida

Publication Date

June 15, 2019

Start Date

June 15, 2019

End Date

October 19, 2019

Conference Session

Experimentation and Laboratory-Oriented Studies Division Technical Session 5

Tagged Division

Experimentation and Laboratory-Oriented Studies

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Paper Authors


Michael Golub Indiana University Purdue University Indianapolis Orcid 16x16

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Michael Golub is the Academic Laboratory Supervisor for the Mechanical Engineering department at IUPUI. He is an associate faculty at the same school, and has taught at several other colleges. He has conducted research related to Arctic Electric Vehicles and 3D printed plastics and metals. He participated and advised several student academic competition teams for several years. His team won 1st place in the 2012 SAE Clean Snowmobile Challenge. He has two masters degrees: one M.S. in Mechanical Engineering and an M.F.A. in Television Production. He also has three B.S. degrees in Liberal Arts, Mechanical Engineering, and Sustainable Energy.

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Jing Zhang Indiana University Purdue University, Indianapolis Orcid 16x16

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Dr. Jing Zhang's research interests are broadly centered on understanding the processing-structure-property relationships in advanced ceramics and metals for optimal performance in application, and identifying desirable processing routes for its manufacture. To this end, the research group employs a blend of experimental, theoretical, and numerical approaches, focusing on several areas, including:

1. Processing-Microstructure-Property-Performance Relationships: thermal barrier coating, solid oxide fuel cell, hydrogen transport membrane, lithium-ion battery
2. Physics-based Multi-scale Models: ab initio, molecular dynamics (MD), discrete element models (DEM), finite element models (FEM)
3. Coupled Phenomena: diffusion-thermomechanical properties
4. Additve Manufacturing (AM) or 3D Printing: AM materials characterization, AM process (laser metal powder bed fusion, ceramic slurry extrusion) design and modeling


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Tensile testing is a popular laboratory experiment for several engineering disciplines. A new technique in teaching this lab is to use additive manufactured plastic specimens. As more and more plastic is used in the industry students need to be aware of the specifications of these materials. Following ASTM 638 standards, 3D printed plastic materials were studied for their potential applications in engineering education. Using the tensile test, the stress strain curves of the materials have been measured. The Young's modulus, ultimate strength, and fracture toughness of the materials are calculated from the stress strain curve. Results show that carbon fiber reinforced polymer (CFRP) has the highest stiffness or Youngs modulus. Acrylonitrile butadiene styrene plus (ABSplus) has strongest mechanical properties, with highest ultimate strength and fracture toughness. With the measured properties, the 3D printed samples may be a viable solution for engineering students to learn mechanical properties of materials. This work will look at the impact of the curriculum. Future work includes using multiple tensile testing machines and determining if the use of metal specimens are needed for student learning outcomes. We will provide a summary of the student outcomes. We analyzed student work using analysis methods.

Golub, M., & Zhang, J. (2019, June), Introducing 3-D Printed Specimens to Mechanical Engineering Paper presented at 2019 ASEE Annual Conference & Exposition , Tampa, Florida. 10.18260/1-2--33011

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