Study on the impact of material extrusion factors on the compressive characteristics of honeycomb lattice-structured Onyx™ composites

Sivakumar, N.K., Palaniyappan, S., Basavarajappa, S., Hashem, M.I., Bodaghi, M. ORCID: 0000-0002-0707-944X and Sekar, V., 2023. Study on the impact of material extrusion factors on the compressive characteristics of honeycomb lattice-structured Onyx™ composites. Materials Today Communications, 37: 107317. ISSN 2352-4928

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Abstract

Honeycomb structures have a wide variety of applications in engineering, architecture, and transportation. Latticing, facilitated by additive manufacturing (AM), can effectively accelerate development of customizable structures. This paper introduces a systematic experimental approach to investigate the impact of various material extrusion (MEX) factors on the physical and mechanical characteristics of triangular honeycomb lattice-structured OnyxTM composites. The experimental study is conducted by varying MEX factors such as layer height, infill density, build orientation, infill pattern, and number of walls and their impact on the physical property (density), mechanical property (compressive strength), and structural property of the lattice structure (structural area deviation). The results highlight that the optimal combination for obtaining the maximum compressive strength is 0.1 mm layer height, 50 % infill density, 90° build orientation, rectilinear infill pattern, and a wall count of three. The MEX factors like infill density, build orientation and infill pattern have a significant impact on the physical properties. Furthermore, the lattice-structured OnyxTM composite with three walls exhibits buckling phenomenon at a slower rate when compared to the lattice-structured OnyxTM composites with one and two walls. The structural area deviation of the integrated lattice is majorly influenced by the layer height and build orientation. The optimized condition for a higher load bearing capability is employed for developing a topologically optimized lattice-structured camera bracket for sports-action cameras.

Item Type:	Journal article
Publication Title:	Materials Today Communications
Creators:	Sivakumar, N.K., Palaniyappan, S., Basavarajappa, S., Hashem, M.I., Bodaghi, M. and Sekar, V.
Publisher:	Elsevier BV
Date:	December 2023
Volume:	37
ISSN:	2352-4928
Identifiers:	Number Type 10.1016/j.mtcomm.2023.107317 DOI 1843175 Other
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Ward
Date Added:	11 Dec 2023 11:28
Last Modified:	11 Dec 2023 11:28
URI:	https://irep.ntu.ac.uk/id/eprint/50507

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