Proceedings of the First International Conference on Science, Engineering and Technology Practices for Sustainable Development, ICSETPSD 2023, 17th-18th November 2023, Coimbatore, Tamilnadu, India

Research Article

Compression Properties of 3D Printed Honeycomb and Re-Entrant Sandwich Core Materials

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  • @INPROCEEDINGS{10.4108/eai.17-11-2023.2342835,
        author={S  Thirumalai Kumaran and G  Kalusuraman},
        title={Compression Properties of 3D Printed Honeycomb and Re-Entrant Sandwich Core Materials},
        proceedings={Proceedings of the First International Conference on Science, Engineering and Technology Practices for Sustainable Development, ICSETPSD 2023, 17th-18th November 2023, Coimbatore, Tamilnadu, India},
        publisher={EAI},
        proceedings_a={ICSETPSD},
        year={2024},
        month={1},
        keywords={3d printing; honeycomb; re-entrant; core materials; thermoplastic filaments},
        doi={10.4108/eai.17-11-2023.2342835}
    }
    
  • S Thirumalai Kumaran
    G Kalusuraman
    Year: 2024
    Compression Properties of 3D Printed Honeycomb and Re-Entrant Sandwich Core Materials
    ICSETPSD
    EAI
    DOI: 10.4108/eai.17-11-2023.2342835
S Thirumalai Kumaran1,*, G Kalusuraman2
  • 1: Department of Mechanical Engineering, PSG Institute of Technology and Applied Research
  • 2: Department of Mechanical Engineering, Kalasalingam Academy of Research and Education
*Contact email: thirumalaikumaran@yahoo.com

Abstract

In the research, various thermoplastic filaments were used to create honeycomb (cellular) and re-entrant (auxetic) structures using a 3D printer of the FDM type, and their compression properties were examined. The thermoplastic polymers PP, ABS, PLA, and PA were used to create the samples. The samples' stress-strain relationships were established after they were compressed quasi-statically in both edgewise and flatwise directions. Digital-image correlation was used to measure fullfield displacements on the sample surfaces and evaluate the behavior of compressive deformation in the elastic and plastic regimes up to densification. Re-entrant type auxetic core components were shown to have higher compression failure stresses than cellular honeycomb core components through compression tests in flatwise and edgewise directions. The honeycomb cores have higher energy absorption for the same polymer types, according to the stress-strain curves of the re-entrant core failure.