The design and development of a laboratory for three-point bending tests on 3D printed samples.

Arash Afshar; Dorina Marta Mihut; David Daniel Sellers; Emily R Schmidt; Erin Faith Parker

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Conference: 2024 South East Section Meeting
Location: Marietta, Georgia
Publication Date: March 10, 2024
Start Date: March 10, 2024
End Date: March 12, 2024
Page Count: 7
DOI: 10.18260/1-2--45569
Permanent URL: https://peer.asee.org/45569
Download Count: 15

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Paper Authors

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Arash Afshar Mercer University

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Dr. Arash Afshar is currently an associate professor in the School of Engineering at Mercer University. He earned his M.S in systems and design and Ph.D. in solid mechanics from the State University of New York at Stony Brook. He also received his B.S and M.S in Solid Mechanics from Amirkabir University of Technology in Tehran, Iran. His teaching and research interests are in the areas of composite materials, finite element analysis, mechanical design and machine learning. Prior to joining Mercer University, he taught at Saginaw Valley State University and worked as a design engineer in oil and gas industry.

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biography

Dorina Marta Mihut

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Dr. Dorina Marta Mihut is an Associate Professor in the Mechanical Engineering Department at Mercer University School of Engineering. She graduated with Ph.D. in Materials Science at University of Nebraska-Lincoln; Ph.D. in Technical Physics at Babes-Bolyai University, Romania; M.S. in Mechanical Engineering, University of Nebraska-Lincoln; and B.S. in Mechanical Engineering at Technical University Cluj-Napoca, Romania. Her teaching and research interests are in the area of materials science and engineering, thin films and coatings depositions using physical vapor deposition systems and related analysis, coatings for wear and corrosion resistance improvement, environmental protection, protection against electromagnetic interference, and antibacterial coatings. Before joining Mercer University, Dr. Dorina Mihut worked as Associate Professor at The University of Texas Pan American, TX, USA, and as Process Engineer at Ion Bond, IHI Group, USA.

Education
Ph.D Materials Science, University of Nebraska, Lincoln
Ph.D Technical Physics, Babes-Balyai University, Cluj-Napoca, Romania
M.S. Mechanical Engineering, University of Nebraska, Lincoln
B.S. Mechanical Engineering, Technical University of Cluj – Napoca, Romania

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Abstract

The aim of this lab is to enable students to conduct three-point bending tests in adherence to the ASTM D790 standard, with the goal of characterizing the flexural properties, including strength, modulus, ductility, and toughness, of 3D printed polymer specimens. The experimental process encompasses several stages. Initially, students are tasked with the creation of 3D models, followed by the utilization of the Fused Deposition Modeling (FDM) method to fabricate samples using diverse polymer materials. Subsequently, adjustments to the span-to-depth ratio and cross-head motion rate are essential to ensure precise execution of the flexural tests, conducted on a motorized force test stand. The data acquisition system records load and deflection values, which are then employed for calculating stress and strain, adhering to the ASTM D790 standard. Finally, stress-strain curves are constructed using the calculated stress and strain values for each polymer material, thereby enabling the comprehensive assessment of flexural properties across different polymer types. This new laboratory setup not only fosters hands-on learning but also provides invaluable insights into the mechanical behavior of 3D-printed polymer samples.

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Afshar, A., & Mihut, D. M., & Sellers, D. D., & Schmidt, E. R., & Parker, E. F. (2024, March), The design and development of a laboratory for three-point bending tests on 3D printed samples. Paper presented at 2024 South East Section Meeting, Marietta, Georgia. 10.18260/1-2--45569