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All Journal Media Mesin: Majalah Teknik Mesin Jurnal Sistem Teknik Industri
Michael Evan
Universitas Surabaya
Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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THE EFFECT OF THERMAL ANNEALING BETWEEN GLASS TRANSITION TEMPERATURE AND CRYSTALLIZATION TEMPERATURE ON DIMENSIONAL ACCURACY OF 3D PRINTED PART The Jaya Suteja; Michael Evan; Sunardi Tjandra
Media Mesin: Majalah Teknik Mesin Vol 23, No 1 (2022)
Publisher : Program Studi Teknik Mesin, Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v23i1.16280

Abstract

The dimensional accuracy of a 3D printed part affects the function, strength, and assembly process of the part. This study aims to determine the effect of the implementation of thermal annealing process on the dimensional accuracy of Polylactic Acid parts printed by Fused Filament Fabrication. This research uses 32 factorial design methodology with two replications. Two investigated parameters of the thermal annealing process are the annealing temperature and the holding time. The annealing temperature is set between the glass transition temperature and the crystallization temperature, which are 65 °C, 75 °C, and 85 °C. The holding times used are 45 minutes, 60 minutes, and 75 minutes. The response of this research is the dimensional deviation in the X, Y, and Z directions. Based on the experiment result, it was found that the use of higher annealing temperature increases the X, Y, and Z-direction deviations. The analysis result indicates that the use of annealing temperature slightly above the glass transition temperature results in a low degree of crystallization but produces higher dimensional accuracy than annealing temperature below the crystallization temperature. While the use of a holding time of 60 minutes increases the deviation in the X and Z directions but decreases the deviation in the Y direction.
Potential Analysis of 3D Printing Products in Surabaya Michael Evan; Joniarto Parung
Jurnal Sistem Teknik Industri Vol. 25 No. 2 (2023): JSTI Volume 25 Number 2 July 2023
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v25i2.11215

Abstract

The cost reduction and production time reduction are the benefits of 3D printing in the manufacturing industry, which can be developed in printing casual shoes that meet customer needs. Although 3D Printing promises many benefits, many are still doubtful about its application in Indonesia. To examine the potential use of 3D printing in Indonesia, information was extracted about the knowledge of the Indonesian people about 3D printing machines and asking to potential investors for an assessment of 3D printing in Indonesia. Data collection was done through an online survey. Respondents were selected randomly with a purposive sampling technique. Survey results show that 91% of respondents said they already knew 3D printing machines, they also knew that there were various kinds of 3D printing products and various kinds of raw materials that could be used. Prospective investors will assess 3D printing products by taking into account market convenience, product uniqueness, workshop/shop location and availability of specialized human resources.
Co-Authors Joniarto Parung Sunardi Tjandra The Jaya Suteja