Johnson_RDPM2019_The Effect of Geometry on Mechanical Properties of Biodegradable Polylactic-Acid Tensile-Test Specimens by Material Extrusion_Final.pdf (451.17 kB)
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The effect of geometry on mechanical properties of biodegradable polylactic-acid tensile-test specimens by material extrusion

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conference contribution
posted on 28.03.2019, 12:01 by Alper Ekinci, Andrew JohnsonAndrew Johnson, Andy GleadallAndy Gleadall, Xiaoxiao Han
Additive manufactured biomedical devices have been widely used in the biomedical fields due to the development of biomaterials and manufacturing techniques. Biodegradable Polylactic Acid-based polymers are the most common material that can be manufactured using material extrusion, one of the most widely known additive manufacturing methods. However, medical grade polymers are too expensive for degradation studies with common tensile specimens. Therefore, this paper aims to reduce the volume of the material used for manufacturing tensile specimen by introducing a new tensile specimen, Micro-X tensile specimen, developed for steel. Young’s Modulus and Ultimate Tensile Strength of micro-X tensile specimens were compared with the ASTM D1708 standard specimens. The experimental results showed that there is no significant difference in terms of mechanical properties. Furthermore, the micro-X tensile specimen was reduced the volume and as well as the cost by approximately 91% in comparison to ASTM D1708 standard tensile specimen.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

16th Conference on Rapid Design, Prototyping & Manufacturing (RDPM 2019)

Citation

EKINCI, A. ... et al., 2019. The effect of geometry on mechanical properties of biodegradable polylactic-acid tensile-test specimens by material extrusion. Presented at the 16th Conference on Rapid Design, Prototyping & Manufacturing (RDPM 2019), Brunel University, London, 4-5th April.

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

14/03/2019

Publication date

2019

Notes

This is a conference paper.

Language

en

Location

Brunel University, London