Compression behaviour of bio-inspired honeycomb reinforced starfish shape structures using 3D printing technology

Saufi, S.A.S.A., Zuhri, M.Y.M., Dezaki, M.L. ORCID: 0000-0001-5680-1550, Sapuan, S.M., Ilyas, R.A., As’arry, A., Ariffin, M.K.A. and Bodaghi, M. ORCID: 0000-0002-0707-944X, 2021. Compression behaviour of bio-inspired honeycomb reinforced starfish shape structures using 3D printing technology. Polymers, 13 (24): 4388. ISSN 2073-4360

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Abstract

The bio-inspired structure (e.g., honeycomb) has been studied for its ability to absorb energy and its high strength. The cell size and wall thickness are the main elements that alter the structural ability to withstand load and pressure. Moreover, adding a secondary structure can increase the compressive strength and energy absorption (EA) capability. In this study, the bio-inspired structures are fabricated by fused deposition modelling (FDM) technology using polylactic acid (PLA) material. Samples are printed in the shape of a honeycomb structure, and a starfish shape is used as its reinforcement. Hence, this study focuses on the compression strength and EA of different cell sizes of 20 and 30 mm with different wall thicknesses ranging from 1.5 to 2.5 mm. Subsequently, the deformation and failure of the structures are determined under the compression loading. It is found that the smaller cell size with smaller wall thickness offered a crush efficiency of 69% as compared to their larger cell size with thicker wall thickness counterparts. It is observed that for a 20 mm cell size, the EA and maximum peak load increase, respectively, when the wall thickness increases. It can be concluded that the compression strength and EA capability increase gradually as the cell size and wall thickness increase.

Item Type: Journal article
Publication Title: Polymers
Creators: Saufi, S.A.S.A., Zuhri, M.Y.M., Dezaki, M.L., Sapuan, S.M., Ilyas, R.A., As’arry, A., Ariffin, M.K.A. and Bodaghi, M.
Publisher: MDPI AG
Date: 14 December 2021
Volume: 13
Number: 24
ISSN: 2073-4360
Identifiers:
NumberType
10.3390/polym13244388DOI
1504849Other
Rights: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Divisions: Schools > School of Science and Technology
Record created by: Laura Ward
Date Added: 05 Jan 2022 09:17
Last Modified: 05 Jan 2022 09:17
URI: http://irep.ntu.ac.uk/id/eprint/45158

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