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All Journal INJECTION: Indonesian Journal of Vocational Mechanical Engineering Journal BEARINGS: Borneo Mechanical Engineering and Science Jurnal Teknik Mesin dharma wiyata
Laksana, Alfian Hudan
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Automotive Engineering Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Journal : Journal BEARINGS: Borneo Mechanical Engineering and Science

 1 
Pemanfaatan Limbah Plastik dari Polietilen Tereftalat PET sebagai Penguat pada Komposit Bermatriks Epoxy Laksana, Alfian Hudan; Waluyo, Marhadi Budi; Murdianto, Deny; Wahyudi, Muhammad
Journal BEARINGS: Borneo Mechanical Engineering and Science Vol 3, No 1 (2024)
Publisher : Faculty of Engineering, Universitas Borneo Tarakan

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Abstract

Public consumption of bottled drinking water continues to increase. Single use plastic bottled water is still an option, this increases plastic waste. The main cause is that plastic cannot be decomposed so it has a bad impact on the environment. Plastic waste recycling has been done to reduce plastic waste but is still in low quantities. One of the recycling processes of plastic waste bottles can be utilized as composite materials. Composite consists of elements namely matrix and filler. In this study, the composite is composed of epoxy as a matrix and plastic bottle waste as a filler. The composition of the filler used ranges from 12.5%, 15%, 17.5%, 20%. The composite was made using the hand lay-up method. The composite that had been made was tested for hardness and impact to observe its mechanical properties. From the results of the research test, it was obtained that the greater the variation of the filler used, the lower the impact strength and hardness values. The highest impact strength was 1.02 J/mm2 Joule at a variation of 12.5%. The highest data results from the hardness test in this study were at a variation of 20% of 75.33 shore D.
Pengaruh Variasi Posisi Throttle Terhadap Arus Motor, Konsumsi Baterai, Dan Akselerasi Motor Listrik (Modifikasi Vario 125) Rohman, Muhammad Fathur; Laksana, Alfian Hudan; Himawan, Citrakara U. S. K.
Journal BEARINGS: Borneo Mechanical Engineering and Science Vol 3, No 2 (2024)
Publisher : Faculty of Engineering, Universitas Borneo Tarakan

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To reduce the use of fuel-powered motorbikes to avoid air pollution, one way is to shift the use of fuel to electrical energy. Currently, the use of electrical energy for transportation has begun to be in demand by the public, because it does not cause noise pollution, low operating costs, and lightweight vehicles. Converting a motorbike into an electric bike will solve this problem. This study uses an experimental method by comparing two settings on the controller from the default condition (Acceleration 0%; Power Limit 80%; Speed Limit 70%) to the maximum condition (Acceleration 30%; Power Limit 100%; Speed Limit 100%), which is then tested on the motor current, battery consumption, and acceleration on the converted motorbike. Based on data analysis and discussion of the study, it can be concluded that changes in the throttle curve settings on the controller can affect the amount of current, the amount of battery consumption, and acceleration on a motorbike that has been converted into an electric bike. Changing the controller settings from default conditions (Acceleration 0%; Power Limit 80%; Speed Limit 70%) to maximum conditions (Acceleration 30%; Power Limit 100%; Speed Limit 100%) is effective in increasing the speed and acceleration of converted electric vehicles. However, changing these settings will increase the current on the motor and battery consumption. In default conditions, the BLDC motor RPM is 3104 RPM (Motor current 31.8 Ampere), after further settings, the BLDC motor RPM increases to 3925 RPM (Motor current 51.4 Ampere)
Pengaruh Penggunaan Jenis Coolant Jumbo, Megacools dan Hikari terhadap Efektivitas Pendinginan Mesin Nissan Livina 1800cc Basir, Aang Abdul; Laksana, Alfian Hudan; Himawan, Citrakara Upendra S.K.; Prasetya, Yanto Budi; Pranata, Bintang
Journal BEARINGS: Borneo Mechanical Engineering and Science Vol 4, No 1 (2025)
Publisher : Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/bearings.v4i1.6725

Abstract

This study aims to analyze the influence of using Jumbo, Megacools, and Hikari coolant types on the cooling effectiveness of Nissan Livina 1800cc engine. The research method used is experimental by testing the three types of coolant under the same engine operating conditions, comparing radiator effectiveness parameters based on differences in engine rotation time and RPM variations. Data collection was conducted systematically at standardized time intervals and engine rotations to obtain accurate and reliable results. The research findings indicate that Jumbo coolant type provides the highest cooling effectiveness compared to the other two coolant types. Based on the analysis of differences in engine rotation time, Jumbo coolant recorded radiator effectiveness of 0.234 at 30 seconds. The radiator effectiveness of Jumbo coolant also increased along with the increase in engine rotation, with the highest value of 0.246 recorded at 2200 RPM. Overall analysis shows that Jumbo coolant has the highest overall radiator effectiveness with an average value of 0.216. These findings indicate that the selection of coolant type significantly affects the performance of the engine cooling system, with Jumbo coolant as the optimal choice for improving cooling effectiveness in Nissan Livina 1800cc engines.
Co-Authors Abdullah, M. Nizarul Basir, Aang Abdul Basit, Moh Abdul Curtinawati, Rizki Fillya Edi Purwanto Ernawati, Ida Fauziah, Nita Fatma Hartono, Setyo Himawan, Citrakara U. S. K. Himawan, Citrakara Upendra S.K. Himawan, Citrakara Upendra Snehabandhana Kusuma Mudzakir, Mohammad Alfian Mudzakir, Muhammad Alfian Muhammad Wahyudi Murdianto, Deny Pranata, Bintang Prasetya, Yanto Budi Rahmad, Hadi Rohman, Muhammad Fathur Safi'i, Fiki Obrian Atma Subandono, Agus Waluyo, Marhadi Budi