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All Journal Jurnal Optimasi Sistem Industri Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi
Maulana, Acim
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Aerospace Engineering Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Variasi pelumas pada torak displacer terhadap kinerja mesin Stirling Siregar, Zufri Hasrudy; Siregar, Masdania Zurairah; Maulana, Acim; Refiza, Refiza; Simanullang, Irwan Prasetya
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 9, No 1 (2023): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v9i1.7471

Abstract

Dalam kehidupan kesehariharian manusia tak terlepas dari penggunaan energi, Indonesia banyak menggunakan energi minyak fosil sebagai energi utama, untuk itu diperlukan konservasi energi yang baik. Pilihan menggunakan mesin Stirling merupakan alternatif yang lain sebagai pilihan yang memungkinkan. Mesin sendiri tak terlepas dari andil pelumas untuk kinerjanya. Tujuan dari penelitian ini yaitu untuk mengetahui pengaruh variasi pelumas pada torak displacer terhadap kinerja mesin Stirling. Dilakukan pengujian dan analisis yang disimpulkan putaran mesin yang lebih tinggi dengan putaran maksimum 270 r.p.m. dengan rata-rata 258,5 r.p.m. Kemudian putaran yang terendah itu pada pengujian SAE 90 dimana putaran maksimum 250 r.p.m. dengan rata-rata 235,17 r.p.m., torsi maksimum 0,670 Nm dengan rata-rata daya yang diperoleh 17,154 watt, daya maksimum mesin Stirling 18.921 watt dengan pengujian menggunakan jenis pelumasan SAE 10 dan rata-rata daya yang dihasilkan 17,514 watt.
Enhancement Material Removal Rate Optimization of Sinker EDM Process Parameters Using a Rectangular Graphite Electrode Sukarman; Sumanto; Maulana, Acim; Mulyadi, Dodi; Khoirudin; Siswanto; Suhara, Ade; Safril
Jurnal Optimasi Sistem Industri Vol. 21 No. 2 (2022): Published in October 2022
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v21.n2.p87-96.2022

Abstract

This article discusses the optimization of sinker electrical discharge machining (sinker EDM) processes using SPHC material that has been hardened. The sinker EDM method is widely employed, for example, in the production of moulds, dies, and automotive and aeronautical components. There is neither contact nor a cutting force between the electrode and the work material in sinker EDM. The disadvantage of the sinker EDM is its low material removal rate. This work aims to optimize the material removal rate (MRR) using graphene electrodes in a rectangular configuration. The SPHC material was selected to determine the optimum MRR model of the sinker EDM input parameter. The Taguchi experimental design was chosen. The Taguchi technique used three input parameters and three experimental levels. Pulse current (I), spark on time (Ton), and gap voltage were among the input parameters (Vg). The graphite rectangle was chosen as an electrode material. The input parameter effect was evaluated by S/N ratio analysis. The result showed that pulse current has the most significant impact on material removal rate in the initial study, followed by spark on time and gap voltage. All input parameters are directly proportional to the MRR. For optimal material removal rate, the third level of pulse current, spark on time, and gap voltage must be maintained. In addition, the proposed Taguchi optimization model could be applied to an existing workshop floor as a simple and practical electronic tool for predicting wear and future research.
Co-Authors Dodi Mulyadi Khoirudin Refiza, Refiza Safril Simanullang, Irwan Prasetya Siregar, Masdania Zurairah Siregar, Zufri Hasrudy Siswanto Suhara, Ade Sukarman SUMANTO