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All Journal OPSI JURNAL PASTI (PENELITIAN DAN APLIKASI SISTEM DAN TEKNIK INDUSTRI) Journal Industrial Servicess Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri Jurnal Agrotek UMMat Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Jurnal Abdi Insani BERDAYA: Jurnal Pendidikan dan Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Jurnal Mesin Nusantara Jurnal Karya Pengabdian Teknik Mesin Energy, Materials and Product design BULLET : Jurnal Multidisiplin Ilmu Jurnal Umum Pengabdian Masyarakat (JUPEMAS) Protech Biosystems Journal
Maharsa Pradityatama
Universitas Mataram
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ANALISA SISTEM ELEKTRONIK POWER STEERING UNTUK PENGEMBANGAN KENDARAAN LISTRIK FAKULTAS TEKNIK UNRAM Okariawan, I Dewa Ketut; Made Wirawan; Bawa Susana, I G.; Maharsa Pradityatama
Energy, Materials and Product Design Vol. 3 No. 1 (2024): Energy, Materials and Product Design
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Recenly conventional vehicles use fossil fuels, however these fuels are non-renewable energy sources and their availability in nature is very limited. If they are explored continuously then one day they will run out, so it is very necessary to save and innovate to use these sources. Other renewable energy sources, one of which is electrical energy, where this electrical energy can be generated from various sources such as water, solar, biomass and so on. Besides that, the use of electrical energy for vehicles is currently very relevant because it is environmentally friendly, that is, it does not produce CO or CO2 gas like conventional vehicles, so this energy is known as green energy. Indonesia has the potential to produce electric cars because the availability of nickel is very abundant to be processed into batteries, as a provider or energy storage for electric cars, our country has a very big opportunity to produce electric cars. To make this happen, it is deemed necessary to carry out comprehensive studies such as power steering so that comfort and safety can be achieved. The most suitable power steering is the electric power steering (EPS) type because the energy required comes from the battery. The method applied in this research is an experimental method, by measuring torque requirements on various roads, the roads chosen are asphalt roads, block paving roads and dirt roads. Based on this data, an EPS test bench then created which was able to measure the input and output torque of the EPS and look for the power consumed by the system. Road conditions can cause differences in torque requirements, in block paving road conditions the greatest torque requirement is 2.77 Nm and the smallest occurs in asphalt road conditions at 1.62 Nm. EPS testing shows that it is only loaded up to 25% with an input torque of 1,652 Nm resulting an output torque of 3,924 Nm with an electrical power consumption of 6,31 watts.
Extraction and isolation of microcellulose from nunang tree (cordia dichotoma) stem fibers Suteja, Suteja; Sari, Nasmi Herlina; Pradityatama, Maharsa
Jurnal Agrotek Ummat Vol 12, No 4 (2025): Jurnal Agrotek Ummat: Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jau.v12i4.35596

Abstract

Mikro serat (holoselulosa) dari serat batang pohon nunang memiliki karakteristik mekanik, ketahanan panas yang baik dan densitas ringan sehingga cocok untuk material kemasan hasil pertanian (biokomposit). Lembaran serat nunang diperoleh dengan merendam kulit batang nunang dalam air dan dipotong ±1 cm untuk diblender, dan dilanjutkan proses pengayakan 40 mesh. Serat makro nunang kemudian diputihkan dengan larutan NaClO2 5% dan dimerserisasi dengan larutan NaOH 9% pada suhu 65 °C dan kecepatan 500 rpm selama 2 jam di atas magnetic stirrer. Hasil uji FTIR mengungkapkan telah hilangnya serapan pada bilangan gelombang 2026–1698 cm-1 yang merupakan indikasi hilangnya senyawa lignin, hemiselulosa, lilin dan senyawa pengotor lainnya. Pengujian difraksi sinar-X (XRD) menunjukkan niilai indeks kekristalan yang lebih tinggi setelah perlakuan kimia NaClO2 dan NaOH, sementara itu pengamatan foto SEM menunjukkan fitur permukaan yang lebih kasar sebagai tanda larutnya material pengotor. Setelah perlakuan kimia serat mikro juga mengindikasikan ketahanan termal yang lebih tinggi. Penelitian ini menunjukkan bahwa serat mikro nunang setelah perlakuan kimia memiliki potensi untuk industri kemasan hasil pertanian seperti film transparan ataupun bioplastik.
Co-Authors A.A. Ngurah Nara Kusuma Anna Apriana Hidayanti Apriana Hidayanti, Anna Aruan, Jerry Bawa Susana, I G. Chaedar, Muhammad Emmy dyah S Emmy Dyah Sulistyowati, Emmy Dyah Fauzan Fahrussiam Febrian, Ade Fikrihadi Kurnia Fikrihadi Kurnia Gunartha, I Gusti Made Bagus Sri Huda, Ahmad Akromul I G. Bawa Susana I G.B. Budi Dharma I Gede Bawa Susana I Gusti Made Bagus Sri Gunartha I Gusti Ngurah Agung Natria Patraman I Made Nuarsa, I Made I Putu Bayu Pramartha I.D.K. Okariawan Ida Bagus Alit Kurnia, Fikrihadi Kurnia, Fikrihadi Leni Agustina Made Wijana, Made Made Wirawan Mardiah, Rabiatun Nasmi Herlina Sari Na’ilah, Meysarah Nugroho, Dony Satriyo Nur Arfian Nurrahmah, Laeli Okariawan, I Dewa Ketut Patraman, I Gusti Ngurah Agung Natria Pramartha, I Putu Bayu Pramudi Arsiwi Rahman, Moamar Ridoni Saoloan Purba Rudy Sutanto Sinarep Sinarep Suartika, I Made Surya, Muhammad Dianku Suteja Suteja Suteja Suteja Suteja, Suteja Syarif Hidayatullah Syariful Wardana Tawaqqal, Akbar Tegas Satriadi Tita Talitha Triadi, Anak Agung Alit Triadi, Anak Agung Alit Wahyudinil Islam Wijana, Made Yusril Ilhamdani Zico Fatahillah Prastomo