[In Press] Mechanical performance and microscopic characterization of additively manufactured functionally graded material (WPC/Ceramic-PLA) via fused deposition modelling

Mohan Kumar Subramaniyan, Dhinakaran Veeman, Surendhar Gurusamy John Kennedy, Biranchi Panda, Chunhui Yang

Research output: Contribution to journalArticlepeer-review

Abstract

During fabrication of complex polymeric structure engineers need to compromise either accuracy or duration which hinders the production efficiency of the industries. Additive manufacturing is an evolving technology with great potential to achieve enhanced mechanical properties of materials over other manufacturing processes. Additive manufacturing effectively reduces lead time thus providing faster fabrication. A prevalent additive manufacturing method to fabricate polymeric structure is fused deposition modelling. Composite material generally possesses better mechanical properties than non-composite material. Polylactic acid is one of popular feedstocks used to fabricate components through fused deposition modelling. Functionally graded materials are structured to possess different mechanical properties towards a graded direction. Hence, this study aims to provide insight to the characteristics of the functionally graded materials structure fabricated with wood polymer composite and ceramic-reinforced polylactic acid. Mechanical tests such as tensile (smooth and V-notch), compression, flexural, impact, and hardness (Shore D hardness) are conducted for functionally graded materials structure and the extracted results are compared with the characteristics of wood polymer composite and ceramic-reinforced polylactic acid materials. The tensile strength of the functionally graded materials structure is found superior to weaker composites (wood polymer composite) and comparable to resilient materials (ceramic-reinforced polylactic acid). Microscopical examinations are carried out for the fabricated structure to ensure the quality. The fractured surfaces are examined using optical microscope to evaluate the mode of failures. The microscopic evaluation conducted for fabricated and fractured structure indicates robust bonding within and between (functionally graded materials interface) wood polymer composite and ceramic-reinforced polylactic acid structure.
Original languageEnglish
Number of pages10
JournalProceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
Publication statusPublished - 2023

Notes

WIP in RD

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