THE INFLUENCE OF THE LAYER HEIGHT ON THE HARDNESS OF THE TPU PLASTIC SPECIMEN MADE BY 3D PRINTING

XIV International Conference on Industrial Engineering and Environmental Protection – IIZS 2024, str. 77-83

 

АУТОР / AUTHOR(S): Dušan Jovanić , Eleonora Desnica ,  Dušan Malić

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DOI: 10.46793/IIZS24.077J

САЖЕТАК / ABSTRACT:

The paper presents a influence of a layer height of a 3D printed specimen by Fused filament fabrication of Thermoplastic polyurethane (TPU) on the hardness by Shore A and Shore D scale method. One of the disadvantages of 3D printing is that the parts have much weaker mechanical characteristics and need to be tested to determine the functionality of the working part. According to ISO 17296-3: Additive technologies- Main characteristics and corresponding test methods, hardness testing is provided for all groups of plastic parts.
Hardness testing of plastic materials is defined by the standard EN ISO 868: 2015- Plastics and ebonite-Determination of hardness by indentation using a durometer (Shore hardness) and was performed with an digital durometer- hardness tester and ISO 7619-1: Rubber, vulcanized or thermoplastic-Determination of indentation hardness- Part 1: Durometer method (Shore hardness).

КЉУЧНЕ РЕЧИ / KEYWORDS:

Hardness testing, Additive production, Fused filament fabrication, Thermoplastic polyurethane (TPU).

ЛИТЕРАТУРА / REFERENCES:

  1. EN ISO 17296-2:2017: Additive manufacturing – General principles – Part 2: Overview of process categories and feedstock
  2. Internet source: https://www.stratasys.com/en/guide-to-3d-printing/technologies-andmaterials/fdm-technology/
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  4. EN ISO 17296-3: Additive manufacturing – General principles – Part 3: Main characteristics and corresponding test methods
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  8. EN ISO 868:2015- Plastics and ebonite – Determination of hardness by indentation using a durometer (Shore hardness)
  9. ISO 7619-1: Rubber, vulcanized or thermoplastic — Determination of indentation hardness- Part 1: Durometer method (Shore hardness).
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