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All Journal Jurnal Sains Teknologi dan Lingkungan (JSTL) Jurnal Teknik Mesin Mechanical Xplore Jurnal Bakti Nusa
Okariawan, I Dewa Ketut
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PEMANFAATAN SAMPAH BIOMASSA MENJADI BRIKET SAMPAH BIOMASSA: - Salman, salman; Okariawan, I Dewa Ketut; Setyawan, Paryanto Dwi
Jurnal Bakti Nusa Vol. 5 No. 1 (2024): JURNAL BAKTI NUSA
Publisher : Jurusan Teknik Elektro Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/baktinusa.v5i1.125

Abstract

Salah satu cara pemanfaatan sampah biomassa adalah dengan mengolahnya menjadi briket sampah biomassa. Karena itulah dalam kegiatan pengabdian masyarakat ini tim pelaksana pengabdian melakukan diseminasi alat pencacah sampah organic sekaligus pembimbingan pembuatan briket sampah biomassa di depan kelompok tani di Lingkungan Batu Ringgit Selatan, Kelurahan Tanjung Karang, Kecamatan Sekabela, Kotamadya Mataram. Saat ini kelompok tani tersebut belum memanfaatkan sampah biomassa yang tersedia secara melimpah disekitar mereka. Pelaksanaan dari kegiatan pengabdian ini meliputi pengadaan alat pencacah sampah organik, pembimbingan pembuatan briket sampah organik, dan produksi briket. Hasil pembuatan briket sampah biomassa ini bisa ditawarkan kepada konsumen skala rumah tangga dan industri. Mesin pencacah sampah organik dibuat memiliki inovasi produk karena starter tidak menggunakan handle tali melainkan switch on off elektrik selain itu input material biomassa dilengkapi pisau sehingga serat biomassa tidak melilit di poros saat mesin beroperasi.
Karakterisasi Produk Metalurgi Serbuk Berbahan Limbah Aluminium Paduan dan Kaca Alit Triadi, Anak Agung; Okariawan, I Dewa Ketut; Nursaid, Nursaid
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.665

Abstract

Aluminum alloy and glass waste is often found in the business of making display racks. It is necessary to do research on the utilization of waste into useful products. This study aims to determine the hardness and compressive strength of objects made of a mixture of aluminum alloy and glass using the powder metallurgy method. The first stage was making aluminum and glass powders up to 100 mesh in size, the next stage was mixing the powders (mixing) with time variations of 70 minutes, 80 minutes and 90 minutes with a composition of 80% aluminum and 20% glass. Then manufacture of specimens with a compaction load of 8 tons. Furthermore, the sintering process at a temperature of 500 oC with time variations of 60 minutes, 90 minutes and 120 minutes, then tested hardness and compressive strength. The results obtained from the hardness test and compressive strength test showed the highest value for the test object with variations in the stirring time and sintering time of 90 minutes. Based on the two-way ANOVA analysis, the mixing time and sintering time obtained the values of Fcount>Ftable, so that the mixing time and sintering time have a significant effect on hardness and compressive strength.
Analisis Jangkauan Kendaraan Listrik Menggunakan Teknik Regresi Studi Kasus Kendaraan Listrik Universitas Mataram Mabrur, Muh. Hijjul Mabrur; Okariawan, I Dewa Ketut; I Made , Mara
Jurnal Teknik Mesin Mechanical Xplore Vol 5 No 2 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v5i2.8861

Abstract

The development of electric vehicles (EV) represents a strategic approach to reducing carbon emissions and decreasing reliance on fossil fuels. This study analyzes the driving range of electric vehicles at the University of Mataram using regression techniques to examine the relationship between vehicle load, energy consumption, and range efficiency. Field tests were conducted under various vehicle load conditions (120.5 kg, 130.5 kg, and 140.5 kg) and gear ratio variations. A linear regression analysis was applied to determine the influence of independent variables (vehicle load and gear ratio) on the dependent variables (energy consumption and driving range). The results indicate a positive correlation between vehicle load and energy consumption, alongside a negative correlation with driving range. Specifically, at a load of 120.5 kg, energy consumption was recorded at 29.29 Wh/km, achieving a maximum range efficiency of 82.82 km per kWh. In contrast, at 140.5 kg, energy consumption increased to 44.00 Wh/km, while range efficiency declined to 54.56 km per kWh. Additionally, gear ratio variations significantly affected vehicle performance, with a gear ratio of 10.29 yielding the highest range efficiency of 112.55 km per kWh, whereas a gear ratio of 6.43 exhibited lower efficiency. These findings emphasize the critical role of vehicle load management and optimal gear ratio selection in enhancing energy efficiency. The study provides valuable insights for the design and development of more efficient and sustainable electric vehicles, contributing to advancements in EV technology.
Analysis of the Influence of Transmission Systems and Vehicle Weight on the Range Capability of the Mandalika Desantara Prototype Vehicle Bima, Rangga Bima; Bima, Rangga; Mara, I Made; Okariawan, I Dewa Ketut
Jurnal Teknik Mesin Mechanical Xplore Vol. 6 No. 1 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v6i1.10276

Abstract

The development of electric vehicles (EVs) plays a vital role in reducing carbon emissions and decreasing dependence on fossil fuels. This study examines the range efficiency of the Mandalika Desantara electric prototype by investigating the impact of vehicle weight and transmission configuration on energy consumption. Experimental tests were conducted using three different vehicle weights (120.5, 130.5, and 140.5 kg) and multiple transmission ratios. The results indicate a positive correlation between vehicle weight, energy usage, and travel performance. The lowest energy consumption was recorded at 21.33 Wh for the 120.5 kg configuration, achieved at an average speed of 14.42 km/h. The highest was 46 Wh for the 140.5 kg configuration, attained at 20.00 km/h. Motor power output ranged from 113.01 W to 177.22 W, with a range efficiency varying between 0.052 km/W and 0.113 km/W. Travel times ranged from 548 seconds at a transmission ratio of 6.43 to 822 seconds at a ratio of 10.29. These findings underscore the importance of optimized weight management and transmission selection in enhancing EV performance, thereby contributing to the development of more energy-efficient and sustainable electric mobility solutions.
Analisis Pengaruh Perilaku Pengemuditerhadap Efisiensi Energi pada Kendaraan Listrik Prototipe Benoit, Fransiskus Yusdwi Benoit Toding; Mara, I Made; Okariawan, I Dewa Ketut
Jurnal Teknik Mesin Mechanical Xplore Vol. 6 No. 1 (2025): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v6i1.10452

Abstract

The development of electric vehicles as a sustainable transportation alternative is rapidly advancing, driven by the need to reduce exhaust emissions and fossil fuel consumption. The efficiency of electric vehicles is not only determined by technical components such as electric motors, batteries, and control systems, but also by the driver's behavior during operation. This study aims to analyze the influence of driver behavior on energy efficiency in a prototype electric vehicle. The test was conducted within the campus environment of Universitas Mataram on a track with various conditions, including flat roads, curves, slight inclines, and speed bumps. Three drivers participated in the experiment, each completing three driving sessions with full freedom to drive without limitations set by the researcher. The results of the study show that driving behavior has a significant impact on energy consumption. Drivers with high speeds and aggressive acceleration tend to consume more energy. In contrast, drivers who adopted efficient driving techniques were able to save energy significantly. These findings confirm that driver behavior is an important factor in the design and development of energy-efficient electric vehicles.
Co-Authors Alit Triadi, Anak Agung Benoit, Fransiskus Yusdwi Benoit Toding Bima, Rangga Bima, Rangga Bima Dwi Setyawan I Made , Mara I Made Mara Mabrur, Muh. Hijjul Mabrur Nursaid Salman Salman