Effect of geometry on the mechanical response of additively manufactured polymer
In recent years, there is an rise in adoption of additive manufactured parts as end use parts. The increase is especially apparent in an aviation industry, where benefits such as shortened supply chain and parts on demand enabled significant cost savings. One of the most established AM methods, Fuse...
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sg-ntu-dr.10356-1516832021-06-26T20:11:31Z Effect of geometry on the mechanical response of additively manufactured polymer Zhang, Yongjie Choi, Joon Phil Moon, Seung Ki School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Engineering::Mechanical engineering Additive Manufacturing Fused Deposition Modelling™ In recent years, there is an rise in adoption of additive manufactured parts as end use parts. The increase is especially apparent in an aviation industry, where benefits such as shortened supply chain and parts on demand enabled significant cost savings. One of the most established AM methods, Fused Deposition Modelling™ (FDM), is widely adopted in the aviation industry to manufacture the end use parts. However, to ensure that FDM parts are able to meet functional requirements, extensive characterisation are required to be performed to understand the impact of manufacturing process parameters on the part performance. Due to Process-Structure-Property (PSP) linkage, toolpath can have a significant influence on FDM part performance. Existing research has focused extensively on the impact of process parameters on the FDM part performance. However, it is believed that toolpath planning, which is significantly less extensively studied, can have influence on the part performance. To investigate the effect, this research utilises 5 different tensile specimens and 2 different fabrication methods, namely specimens printed to net shape and specimens machined from a printed plate. It is concluded that the net shape specimens are substantially strengthened and stabilised due to presence of toolpath features. Due to the PSP linkage, the features translate into favourable improvement in mechanical performance which strengthened the net shaped specimens by up to 51%. This paper characterises influence of the toolpath on the mechanical properties and discusses how the toolpath features such as travel distance, thermal history and contours, impact FDM parts which can aid in prediction of performance of FDM structures. Economic Development Board (EDB) National Research Foundation (NRF) Published version This research was supported by a grant from ST Engineering Aerospace, EDB-IPP, Singapore Centre for 3D Printing (SC3DP), the National Research Foundation, Prime Minister's Office, Singapore under its Medium-Sized Centre funding scheme. 2021-06-25T05:42:38Z 2021-06-25T05:42:38Z 2021 Journal Article Zhang, Y., Choi, J. P. & Moon, S. K. (2021). Effect of geometry on the mechanical response of additively manufactured polymer. Polymer Testing, 100, 107245-. https://dx.doi.org/10.1016/j.polymertesting.2021.107245 0142-9418 0000-0002-2249-7500 https://hdl.handle.net/10356/151683 10.1016/j.polymertesting.2021.107245 2-s2.0-85106625621 100 107245 en Polymer Testing © 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). application/pdf |
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Engineering::Mechanical engineering Additive Manufacturing Fused Deposition Modelling™ Zhang, Yongjie Choi, Joon Phil Moon, Seung Ki Effect of geometry on the mechanical response of additively manufactured polymer |
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In recent years, there is an rise in adoption of additive manufactured parts as end use parts. The increase is especially apparent in an aviation industry, where benefits such as shortened supply chain and parts on demand enabled significant cost savings. One of the most established AM methods, Fused Deposition Modelling™ (FDM), is widely adopted in the aviation industry to manufacture the end use parts. However, to ensure that FDM parts are able to meet functional requirements, extensive characterisation are required to be performed to understand the impact of manufacturing process parameters on the part performance. Due to Process-Structure-Property (PSP) linkage, toolpath can have a significant influence on FDM part performance. Existing research has focused extensively on the impact of process parameters on the FDM part performance. However, it is believed that toolpath planning, which is significantly less extensively studied, can have influence on the part performance. To investigate the effect, this research utilises 5 different tensile specimens and 2 different fabrication methods, namely specimens printed to net shape and specimens machined from a printed plate. It is concluded that the net shape specimens are substantially strengthened and stabilised due to presence of toolpath features. Due to the PSP linkage, the features translate into favourable improvement in mechanical performance which strengthened the net shaped specimens by up to 51%. This paper characterises influence of the toolpath on the mechanical properties and discusses how the toolpath features such as travel distance, thermal history and contours, impact FDM parts which can aid in prediction of performance of FDM structures. |
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School of Mechanical and Aerospace Engineering |
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School of Mechanical and Aerospace Engineering Zhang, Yongjie Choi, Joon Phil Moon, Seung Ki |
format |
Article |
author |
Zhang, Yongjie Choi, Joon Phil Moon, Seung Ki |
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Zhang, Yongjie |
title |
Effect of geometry on the mechanical response of additively manufactured polymer |
title_short |
Effect of geometry on the mechanical response of additively manufactured polymer |
title_full |
Effect of geometry on the mechanical response of additively manufactured polymer |
title_fullStr |
Effect of geometry on the mechanical response of additively manufactured polymer |
title_full_unstemmed |
Effect of geometry on the mechanical response of additively manufactured polymer |
title_sort |
effect of geometry on the mechanical response of additively manufactured polymer |
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2021 |
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https://hdl.handle.net/10356/151683 |
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1703971215424618496 |