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This paper presents a study on the evaluation of stress relaxation of PETG material with a variable technological parameter of 3D printing: layer height. A five-parameter Maxwell-Wiechert model was used for the evaluation. The obtained values of \(Chi^{2}\) and \(R^{2}\) fit coefficients confirmed the strong fit of the Maxwell-Wiechert model to the experimental curves. The calculated values of the elastics moduli and dynamic viscosity coefficients confirmed that the layer height influences them. The research presented here can be used in engineering calculations and computer simulations.

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Tensile Stress Relaxation of PETG Material Manufactured by MEX Technology

  • 会议论文

  • 发表日期：

    2026年

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  • Wiktor Szot,
  • Paweł Szczygieł,
  • Mateusz Rudnik,
  • Natalia Kowalska

摘要

This paper presents a study on the evaluation of stress relaxation of PETG material with a variable technological parameter of 3D printing: layer height. A five-parameter Maxwell-Wiechert model was used for the evaluation. The obtained values of \(Chi^{2}\) and \(R^{2}\) fit coefficients confirmed the strong fit of the Maxwell-Wiechert model to the experimental curves. The calculated values of the elastics moduli and dynamic viscosity coefficients confirmed that the layer height influences them. The research presented here can be used in engineering calculations and computer simulations.