Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/24314
Title: | Dimensional considerations on the mechanical properties of 3D printed polymer parts | Authors: | Siegkas, Petros | Major Field of Science: | Engineering and Technology | Field Category: | Mechanical Engineering | Keywords: | 3D printing;3D printed material characterisation;Infill percentage;PLA;TPU;ISO standard;Dimensional variation | Issue Date: | 2020 | Source: | Polymer Testing, 2020, vol. 90 | Volume: | 90 | Journal: | Polymer Testing | Abstract: | Additive manufacturing offers a useful and accessible tool for prototyping and manufacturing small volume functional parts. Polylactic acid (PLA) and thermoplastic polyurethane (TPU) are amongst the most commonly used materials. Characterising 3D printed PLA and TPU is potentially important for both designing and finite element modelling of functional parts. This work explores the mechanical properties of additively manufactured PLA/TPU specimens with consideration to design parameters including size, and infill percentage. PLA/TPU specimens are 3D-printed in selected ISO standard geometries with 20%, 60%, 100% infill percentage. Tensile and compression test results suggest that traditional ISO testing standards might be insufficient in characterising 3D printed materials for finite element modelling or application purposes. Infill percentage in combination to design size, may significantly affect the mechanical performance of 3D printed parts. Dimensional variation may cause inhomogeneity in mechanical properties between large and small cross section areas of the same part. The effect was reduced in small cross section parts where reducing the nominal infill had less effect on the resulting specimens. The results suggest that for 3D printed functional parts with significant dimensional differences between sections, the material properties are not necessarily homogeneous. This consideration may be significant for designers using 3D printing for applications, which include mechanical loading. | URI: | https://hdl.handle.net/20.500.14279/24314 | ISSN: | 01429418 | DOI: | 10.1016/j.polymertesting.2020.106656 | Rights: | © Elsevier | Type: | Article | Affiliation : | Nottingham Trent University | Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
CORE Recommender
SCOPUSTM
Citations
43
checked on Mar 14, 2024
WEB OF SCIENCETM
Citations
35
Last Week
1
1
Last month
2
2
checked on Oct 29, 2023
Page view(s)
239
Last Week
1
1
Last month
9
9
checked on Nov 21, 2024
Google ScholarTM
Check
Altmetric
Items in KTISIS are protected by copyright, with all rights reserved, unless otherwise indicated.