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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Teknik ITS Rekayasa Mesin JMES The International Journal of Mechanical Engineering and Sciences Mechanical Engineering for Society and Industry Sewagati
Indra Sidharta
Institut Teknologi Sepuluh Nopember Surabaya
Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Pengujian Keselamatan Thermal pada Battery Pack Sepeda Motor Listrik Berdasarkan Regulasi UN R-136 Wikarta, Alief; Yuniarto, M. Nur; Sidharta, Indra
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.6

Abstract

The electric-motorcycle is one of the promising technology that can improve environmental quality as well as reduce dependency on oil imports in Indonesia. The major challenge of electric-motorcycle implementation is the safety of the lithium-ion battery pack. This research aims to ascertain the over-temperature protection, and also to carry out shock & cycling test for the battery thermal safety. The testing procedures and apparatus comply with the United Nations Regulation No 136 (UN R-136), namely a temperature humidity chamber, a battery load unit, a blower, and a charger. The first step is the designing and prototyping of the battery pack with 100 V and 30 Ah, which contains a module of cells, Battery Management System (BMS), wiring, isolator, socket, and aluminum casing. The second step is the battery thermal safety test. The results showed that the battery pack satisfied the acceptance criteria, with evidence of no electrolyte leakage, rupture, fire, and explosion during and after testing. Result of over-temperature protection, BMS can cut-off the discharge rate at a temperature of 45.89°C. Meanwhile, for thermal shock & cycling tests, the battery pack did not fail when the temperature changes from 59.72°C and -40.25°C for 60 hours.
Designing and performance investigation of permanent magnet motor prototype for UTV electric drive train application Muhammad Nur Yuniarto; Yoga Uta Nugraha; I Made Yulistya Negara; Dimas Anton Asfani; Indra Sidharta
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 12, No 4: December 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v12.i4.pp2018-2029

Abstract

The dynamic design specifications of a vehicle are used to define the required torque and speed of a permanent magnet motor. This is due to providing clear instructions on the intent, performance, and construction of a vehicle. Therefore, this study aims to determine an engineering design and prototyping process of a Permanent Magnet Motor, to be used as an electric powertrain in a Utility Vehicle. Based on being used in severe road condition (steep inclination and off road), the vehicle should be able to handle a 45° inclination with total payload of approximately 250 kg. Using a rear-wheel-drive traction, its weight should also be less than 1000 kg. Furthermore, the motor should be operated at a maximum battery voltage of 100 V. According to the requirements, the electric powertrain should further have the ability to deliver a torque of approximately 1600 Nm on both rear wheels. Using a finite element method to simulate performances, transmission was coupled to the motor in providing the required torque. In addition, the motor prototype was subsequently manufactured and tested using a dynamometer. The results showed that the motor produced 19.6 kW, 5600 RPM, and 75 Nm at 96 V. Therefore, the design and prototyping process of the motor satisfied all the required specification.
Pengaruh Variasi Komposisi Serbuk Kayu Dengan Pengikat Semen Pada Pasir Cetak Terhadap Cacat Porositas Dan Kekasaran Permukaan Hasil Pengecoran Aluminium Alloy 6061 Fatkhur M Rohman; Indra Sidharta; Soeharto Soeharto
Jurnal Teknik ITS Vol 3, No 2 (2014)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (810.549 KB) | DOI: 10.12962/j23373539.v3i2.7140

Abstract

Proses pengecoran dilakukan dengan cara mencairkan logam dalam dapur pelebur, kemudian dituangkan ke dalam cetakan dan dibiarkan membeku hingga dapat dikeluarkan dari dalam cetakan. Faktor yang berpengaruh terhadap kualitas hasil pengecoran cetakan pasir, diantaranya adalah komposisi cetakan pasir dan perancangan sistem saluran (gatting system). Pada penelitian ini bertujuan untuk menganalisa pengaruh variasi komposisi serbuk kayu dengan pengikat semen pada pasir cetak terhadap cacat porositas dan kekasaran permukaan hasil pengecoran aluminium alloy 6061. Bahan yang digunakan pada penelitian ini adalah aluminium Alloy 6061 dan komposisi semen dan air sebesar 6%, komposisi serbuk kayu sebesar 1%, 2%, 3%, 4%, 5% dan 6%  komposisi pasir silika sebesar 87%, 86%, 85%, 84%, 83% dan 82%. Dari hasil penelitian ini didapatkan nilai uji permeabilitas pasir cetak cenderung bertambah seiring dengan bertambahnya serbuk kayu. Nilai uji kompresi pasir cetak cenderung berkurang seiring dengan bertambahnya serbuk kayu.. Nilai pengujian porositas benda hasil coran didapatkan nilai terkecil terletak pada komposisi serbuk kayu 6% dan nilainya sebesar 0,25%, sedangkan nilai pengujian porositas benda hasil coran terbesar terletak pada komposisi serbuk kayu 1% dengan nilai sebesar 4,96%. Nilai pengujian kekasaran permukaan benda hasil coran didapatkan nilai terkecil terletak pada komposisi serbuk kayu 6% dan nilainya sebesar 0,06µm, sedangkan nilai pengujian kekasaran permukaan benda hasil coran terbesar terletak pada komposisi serbuk kayu 1% dengan nilai sebesar 2,00µm.
Studi Eksperimen Pengaruh Variasi Dimensi Cil Dalam (Internal Chill) Terhadap Cacat Penyusutan (Shrinkage) Pada Pengecoran Aluminium 6061 Nurhadi Ginanjar Kusuma; Indra Sidharta
Jurnal Teknik ITS Vol 3, No 2 (2014)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (643.019 KB) | DOI: 10.12962/j23373539.v3i2.7149

Abstract

Aluminium merupakan salah satu material yang semakin banyak dimanfaatkan terutama pada industri komponen mesin. Cacat pada hasil cor sangat dihindari karena akan berpengaruh pada kualitas hasil yang merubah dimensi dan sifat mekanik dari benda hasil cor. Shrinkage merupakan cacat yang terjadi karena perbedaan kecepatan pendinginan pada benda cor. Penambahan variasi ukuran dimensi cil dalam (internal chill) bertujuan untuk menganalisa pengaruh perubahan dimensi terhadap cacat shrinkage pada pengecoran. Penelitian pembuatan benda coran dilakukan dengan menggunakan bahan coran aluminium 6061 dengan menggunakan metode pengecoran pasir. Sistem saluran yang digunakan menggunakan ketentuan AFS. Jenis saluran yang digunakan adalah horizontal parting-line, serta pasir cetak dengan komposisi pasir silica 89%, bentonit 7,5%, dan air 3,5%. Hasil penelitian menunjukkan pengaruh penggunaan dimensi internal chill terhadap prosentase jumlah cacat shrinkage dengan diameter 15, 20, dan 25 secara berurutan sebesar 3,82, 1,28, dan 1,01%. Penggunaan variasi dimensi internal chill pada pengecoran benda yang semakin diperbesar dapat berfungsi dengan baik serta menggeser lokasi cacat penyusutan menjauhi internal chill. Grafik yang didapatkan dari pengukuran pada internal chill diameter 25 mm (daerah yang mengalami prosentase cacat terkecil) memiliki kemampuan menyerap panas lebih baik daripada diameter 15 dan 20 mm.
Complex Potential Methods for a Crack and Three-phase Circular Composite in Anti-plane Elasticity Alief Wikarta; Unggul Wasiwitono; Indra Sidharta
JMES The International Journal of Mechanical Engineering and Sciences Vol 1, No 1 (2017)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25807471.v1i1.2212

Abstract

An interaction between an anti-plane crack with a three-phase circular composite by using complex potential methods is considered in this paper. The solution procedures for solving this problem consist of two parts. In the first part, based on complex potential methods in conjunction with analytical continuation theorem and alternating technique, the complex potential functions of a screw dislocation interacting with three-phase circular composites are obtained. The second part consists of the derivation of logarithmic singular integral equations by introducing the complex potential functions of screw dislocation along the crack border together with superposition technique. The logarithmic singular integral equations are then solved numerically by modeling a crack in place of several segments. Linear interpolation formulae with undetermined coefficients are applied to approximate the dislocation distribution along the elements, except at vicinity of the crack tip where the dislocation distribution preserves a square-root singularity. The mode-III stress intensity factors are then obtained numerically in terms of the values of the dislocation density functions of the logarithmic singular integral equations.
Experimental and simulation approach of cooling system in 3-phase inverter using extended surface Agus Mukhlisin; Prisma Megantoro; Estiko Rijanto; I Nyoman Sutantra; Lilik Jamilatul Awalin; Yoga Uta Nugraha; Indra Sidharta
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 13, No 4: December 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v13.i4.pp2313-2323

Abstract

Overheating is a failure mode that significantly affects the reliability of electronic devices. All electronic devices, including a 3-phase inverter driving a traction motor, produce heat dissipation. Heat dissipation needs to be controlled with cooling to prevent overheating. Overheating can be avoided by increasing cooling or reducing heat dissipation. Heat dissipation in the 3-phase inverter is caused by the internal resistance of the metal–oxide–semiconductor field-effect transistor (MOSFET), switching loss, and other factors. Cooling for the 3-phase inverter can use water coolant or air coolant. The cooling system is based on the amount of heat dissipation produced. Cooling of a 3-phase inverter can use air coolant with the addition of an extended surface area in the heat sink. The heat sink uses aluminum material, often called pin fin. There are kinds of aluminum available in the market. We calculated heat generation based on the MOSFET's internal resistance, switching loss, and other factors. We validated the simulation results experimentally using a thermal camera. Thus, we could find an optimal number, dimensions, and aluminum type of fin for the cooling system in the 3-phase inverter.
Urgensi Perawatan Sepeda Motor bagi Masyarakat Desa Pojok Kecamatan Campurdarat Kabupaten Tulungagung Triyogi Yuwono; Herman Sasongko; Sutardi; Nur Ikhwan; Suhardjono; Nur Yuniarto; Is Bunyamin; Indra Sidharta
Sewagati Vol 7 No 1 (2023)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4999.666 KB) | DOI: 10.12962/j26139960.v7i1.455

Abstract

Sebagai desa berkembang, penduduk Desa Pojok, Kecamatan Campurdarat, Kabupaten Tulungagung umumnya telah menggunakan sepeda motor sebagai sarana transportasi dan terutama untuk akivitas pertanian mereka. Sebagai sarana transportasi untuk menopang kehidupan perekonomian mereka maka pemahaman akan perawatan sepeda motor secara berkala menjadi sebuah keharusan. Hal ini, di satu sisi, untuk menjaga umur ekonomi sepeda motor dan di sisi lain menjaga lingkungan udara yang bersih, bila sepeda motor terawat dengan baik tentu akan menghasilkan gas buang yang relatif lebih bersih. Oleh karena itu, dalam program pengabdian masyarakat ini akan dilakukan program servis sepeda motor gratis dan juga pelatihan perawatan sepeda motor bagi pemuda Karang Taruna Desa Pojok. Berkat antusiasme masyarakat membuat program ini berhasil melakukan servis gratis bagi 105 sepeda motor dari target 100 sepeda motor dan melatih 12 orang pemuda Karang Taruna Desa sebagai pionir perawatan sepeda motor di masa datang. Dengan kegiatan servis sepeda motor gratis dan selanjutnya perawatan berkala yang baik dipastikan sepeda motor akan berumur relatif lebih panjang dan aman digunakan dalam mendukung kehidupan perekonomian masyarakat setempat.
Optimalisasi Proses Pemanasan pada Pengolahan Limbah Sampah Plastik di Robries Wijayanti, Ika Dewi; Suwarta, Putu; Sutikno; Mubarok, Fahmi; Agustin, H.C. Kis; Suwarno; Wijanarko, Wahyu; Sidharta, Indra
Sewagati Vol 8 No 5 (2024)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v8i5.1507

Abstract

Robries adalah perusahaan daur ulang limbah plastik di Surabaya yang didirikan pada tahun 2018 oleh alumni Desain Produk ITS. Perusahaan ini bertujuan mengurangi limbah termoplastik dengan mengolahnya menjadi perabot rumah tangga seperti bangku, lemari, dan pot bunga, serta tutup botol dan wadah kosmetik. Namun, beberapa masalah dalam produk daur ulangnya, seperti penyusutan yang tidak terkontrol, dimensi produk yang tidak konsisten serta void, menyebabkan Robries kesulitan untuk memasarkan produknya ke luar negeri. Berdasarkan pengamatan Tim Departemen Teknik Mesin (DTM) ITS di pabrik, diketahui bahwa selama proses pencetakan berlangsung, distribusi temperatur pada peralatan oven yang ada saat ini tidak merata sehingga menyebabkan penyusutan dan dimensi produk yang tidak konsisten. Langkah yang dilakukan oleh tim DTM ITS adalah dengan melakukan pengukuran temperatur dan studi peralatan oven yang ada lalu solusi yang ditawarkan adalah (1) memastikan temperatur pemanasan di oven sudah merata sebelum memasukkan limbah termoplastik dan (2) re-design peralatan oven yang ada saat ini dengan menambahkan sistem pendinginan untuk memastikan distribusi panas di dalam oven merata sehingga produk memiliki dimensi yang konsisten dan cacat seminimal mungkin. Cacat yang dihasilkan lebih sedikit setelah menggunakan kedua solusi tersebut sehingga dapat disimpulkan kualitas produk daur ulang plastik telah ditingkatkan.
Exploring the potential of Indonesian iron sand in the formation of iron nitride for magnetic applications Sidharta, Indra; Syah, Rakhasoni Firman; Sutikno, Sutikno; Darminto, Darminto; Shahab, Abdullah
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.13234

Abstract

Iron nitride is a transition metal material that exhibits ferromagnetic properties at room temperature, making it a suitable candidate for use in Soft Magnetic Composites (SMC) applications. Previous research showed that iron nitride can be synthesized using nano-sized iron oxide powder derived from processed natural iron sand through gas nitriding. Considering the abundance of iron sand in Indonesia, there is a need to carry out an investigation related to iron sand-based SMC. Therefore, this research aims to synthesize iron nitride material using the abundant natural iron sand discovered in Indonesia. This study used iron oxide material synthesized from locally obtained natural iron sand, in the form of Fe3O4 and Fe2O3. Iron oxide undergoes coprecipitation and was subsequently exposed to the gas nitriding process with a holding time of 4 hours and a gas flow of 150 mL/min in NH3 gas. The results show that iron nitride is formed after nitriding of iron oxide powders, and the phases formed include ε-Fe3N and γ’-Fe4N. The synthesized material exhibits soft magnetic properties, with saturation magnetization values ranging from the highest at 75.41 emu/g and the lowest at 18.9 emu/g.
Co-Authors Abdullah Shahab Agus Mukhlisin Agustin, H.C. Kis Alief Wikarta Awalin, Lilik Jamilatul Darminto . Dimas Anton Asfani Estiko Rijanto Fatkhur M Rohman Herman Sasongko I Made Yulistya Negara I Nyoman Sutantra Is Bunyamin Mubarok, Fahmi Nur Ikhwan Nur Yuniarto Nurhadi Ginanjar Kusuma Prisma Megantoro Putu Suwarta Soeharto Soeharto Suhardjono Suhardjono Sutardi SUTIKNO Sutikno Sutikno Suwarno Syah, Rakhasoni Firman Triyogi Yuwono Unggul Wasiwitono Wijanarko, Wahyu Wijayanti, Ika Dewi Yoga Uta Nugraha Yoga Uta Nugraha Yuniarto, M. Nur Yuniarto, Muhammad Nur