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Accurate: Journal of Mechanical Engineering and Science
Published by Politeknik Negeri Cilacap
ISSN : 27224279     EISSN : 27225089     DOI : https://doi.org/10.35970
Core Subject : Science, Engineering,
Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Accurate: Journal of Mechanical Engineering and Science is a peer-reviewed open-access journal with e-ISSN 2722-5089 and p-ISSN: 2722-4279 published by Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Negeri Cilacap. The journal invites scientists and engineers to exchange and disseminate theoretical and practice-oriented in the various topics include, but not limited to mechanical Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 10 Documents
 1 
Search results for , issue "Vol. 3 No. 1 (2022): April 2022" : 10 Documents clear
Rancang Bangun Sistem Automatic Semi Returnless Berbasis Arduino Uno pada Engine Caterpillar C27 Studi Kasus PT. Sapta Indra Sejati Widi Achmad Sukisno, Sulis; Suparno, Joko; Ardiansyah Halim, Dimas
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1508

Abstract

Pump units with a Caterpillar C27 engine with an EUI (Electronic Unit Injector) fuel system that often has low power due to filter clogging at PT. Sapta Indra Sejati. Filter cloggingoccurs due to due to the thickened biofuel content and creates a crust. If the machine has a problem, the mining process can be disrupted because the coal loading area is flooded. This study aims to create an additional system in the form of a automatic semi-returnless where the fuel return line is changed automatically into the filter because the fuel return is clean. The movement of the return control valve is regulated by a microcontroller which is programmed according to specifications and needs. The microcontroller used is Arduino Unowith pressure and temperature sensors. Arduino Uno is programmed when the engine will experience low power with a fuel pressure of 400 kPa then the return path is changed to semi returnless. With a change in the semi returnless path, the pressure becomes stable at 380 kPa and the engine RPM is stable with power that is still maintained. The advantages of semi-returnless system are that filter replacement costs can be reduced and production time is not interrupted.
Pengaruh Sudut Sudu Turbin Jenis Taper Terhadap Tip Speed Ratio (TSR) dan Power Coefficient (CP) pada Turbin Angin Horisontal Berbasis Q-Blade Aries Permana Tarigan, Roy; Ariawan, Radhi; Jauza Maulana, Adam; Al Khorni, Wais
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1509

Abstract

The utilization of wind energy as a power plant still needs to be improved by looking at the turbine performance, which is not always the same in different regional conditions. This study aims to determine the effect of the blade angle of the turbine on the tip speed ratio (TSR) and power coefficient (CP) by using a Q-Blade simulation. Q-Blade software can predict the value of the power generated at the blade rotation by comparing the CP and TSR values. The type of airfoil NACA 4412, taper blade, blade's numbers (4), blade radius (0.3 m), wind speed ± 3.6 m/s were fixed variables in this study. The simulation generated a graph of the relationship between CP and TSR changed and a simulation image of the load distribution ensued in the blade geometry. The blade angle of 30 at the TSR number 5 produced the highest CP values, which was ±0.4. The low loading value in the axis/rotor region, at a variation of the blade angle of 30, balances the centrifugal force on the rotating fluid. The centrifugal force produces thrust on the turbine so that the blade rotates with a high CP value in that area.
Analisa Kerusakan Transmisi Otomatis dengan Metode Failures Mode and Effects Analysis (FMEA) dan Logic Tree Anaysis (LTA) Sodikin, Jenal; Satria Jati, Unggul; perdana wanti, linda
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1510

Abstract

The power transfer system is an inseparable part of a vehicle unit, this component functions as a power source from the engine, increasing the moment generated by the engine according to the needs of the load and road conditions and reversing the rotation. Type As the age of the vehicle, the transmission it uses will be damaged or even fail to function, most automatic transmissions start having problems after the vehicle is used above 100,000 km or on vehicles that are not used in accordance with the provisions and do not carry out maintenance procedures properly, the automatic transmission is damaged. could come sooner. Based on the implementation of the Failures Mode Effects Analysis (FMEA) method which is used to evaluate components in a system by examining the potential failure model to determine the impact that will occur on the component or work system, it is found that the highest Risk Piority Number (RPN) is found in the Seal component. Piston Matic 450, Multiple Clutch/Clutch Pack 360, Selenoid Valve 324. Each potential failure model is classified based on the impact it can have on the success of the system or on user safety by dividing the categories using Logic Tree Analysis (LTA) with the results of most components automatic transmission is included in the type B failure (Outage Problem) where the component causes failure of all or part of the system. Based on the RPN value, the right maintenance is Predictive Maintenance.
Pengaruh Variasi Suhu pada Aerator 10 Watt dengan Panel Surya 80 WP Terhadap Kandungan Oksigen Terlarut Rachmawati, Putri; Agistya Anugrah, Rinasa; Ulikaryani
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1512

Abstract

The fulfillment of energy for humans and animals is increasing day by day. This is evidenced by the fulfillment of electricity needs. This need is ab basic need, where humans and animals need electricity consumption 24 hours a day. So that renewable energy is needed with solar power generation for 12 hours of electricity. This research is focused on fulfilling electricity consumption in nile tilapia fish with 80 WP slar panels and 10 watt aerator power. The purpose of this study was to determine the level of dissolved oxygen in the water, the temperature in the water and the temperature in the surrounding environment. This research method uses a direct observation of dissolved oxygen with a predetermined data collection time using a dissolved oxygen measuring instrument that can be used in water. The result of this study indicate that the dissolved oxygen content produced is 14.61 mg/l with a thermal in water of 26.30C and thermal environment of around 280C.
Pengaruh Penambahan Limbah Plastik Sebagai Alternatif Pengganti Bata Beton Dinding Rumah Prabowo, Dian; Hardini, Probo; Kurniawan, Ipung; Santoso, Agus
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1513

Abstract

The current handling of waste, especially styrofoam, plastic, used oil is not optimal, these wastes can be used to manufacture other products such as bricks with a simple process. If the waste is processed properly, it will get good economic value. To get a good value or product, it is necessary to do research or testing, as in this study, namely the use of styrofoam waste, plastic and used oil to be used as bricks. In this study, it is hoped that the public will understand and understand the quality of the types of composite bricks and ordinary types of bricks seen from their advantages and disadvantages. Styrofoam waste, plastic and used oil are mixed into bricks with a volume of 21.27%. The equipment used in this research are chopper, stirrer, digital balance and compression test machine. In this study, the results of the III (composite) molded bricks decreased the compressive strength of 59% compared to mortar and cement bricks. The results of the compressive strength test in mold III (composite) were 47.76% higher than that in mold II on composite brick. Composite III bricks are classified as quality III, namely with solid type bricks that cannot get a large load.
Rancang Bangun Sistem Automatic Semi Returnless Berbasis Arduino Uno pada Engine Caterpillar C27 Studi Kasus PT. Sapta Indra Sejati Widi Achmad Sukisno, Sulis; Suparno, Joko; Ardiansyah Halim, Dimas
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1508

Abstract

Pump units with a Caterpillar C27 engine with an EUI (Electronic Unit Injector) fuel system that often has low power due to filter clogging at PT. Sapta Indra Sejati. Filter cloggingoccurs due to due to the thickened biofuel content and creates a crust. If the machine has a problem, the mining process can be disrupted because the coal loading area is flooded. This study aims to create an additional system in the form of a automatic semi-returnless where the fuel return line is changed automatically into the filter because the fuel return is clean. The movement of the return control valve is regulated by a microcontroller which is programmed according to specifications and needs. The microcontroller used is Arduino Unowith pressure and temperature sensors. Arduino Uno is programmed when the engine will experience low power with a fuel pressure of 400 kPa then the return path is changed to semi returnless. With a change in the semi returnless path, the pressure becomes stable at 380 kPa and the engine RPM is stable with power that is still maintained. The advantages of semi-returnless system are that filter replacement costs can be reduced and production time is not interrupted.
Pengaruh Sudut Sudu Turbin Jenis Taper Terhadap Tip Speed Ratio (TSR) dan Power Coefficient (CP) pada Turbin Angin Horisontal Berbasis Q-Blade Aries Permana Tarigan, Roy; Ariawan, Radhi; Jauza Maulana, Adam; Al Khorni, Wais
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1509

Abstract

The utilization of wind energy as a power plant still needs to be improved by looking at the turbine performance, which is not always the same in different regional conditions. This study aims to determine the effect of the blade angle of the turbine on the tip speed ratio (TSR) and power coefficient (CP) by using a Q-Blade simulation. Q-Blade software can predict the value of the power generated at the blade rotation by comparing the CP and TSR values. The type of airfoil NACA 4412, taper blade, blade's numbers (4), blade radius (0.3 m), wind speed ± 3.6 m/s were fixed variables in this study. The simulation generated a graph of the relationship between CP and TSR changed and a simulation image of the load distribution ensued in the blade geometry. The blade angle of 30 at the TSR number 5 produced the highest CP values, which was ±0.4. The low loading value in the axis/rotor region, at a variation of the blade angle of 30, balances the centrifugal force on the rotating fluid. The centrifugal force produces thrust on the turbine so that the blade rotates with a high CP value in that area.
Analisa Kerusakan Transmisi Otomatis dengan Metode Failures Mode and Effects Analysis (FMEA) dan Logic Tree Anaysis (LTA) Sodikin, Jenal; Satria Jati, Unggul; perdana wanti, linda
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1510

Abstract

The power transfer system is an inseparable part of a vehicle unit, this component functions as a power source from the engine, increasing the moment generated by the engine according to the needs of the load and road conditions and reversing the rotation. Type As the age of the vehicle, the transmission it uses will be damaged or even fail to function, most automatic transmissions start having problems after the vehicle is used above 100,000 km or on vehicles that are not used in accordance with the provisions and do not carry out maintenance procedures properly, the automatic transmission is damaged. could come sooner. Based on the implementation of the Failures Mode Effects Analysis (FMEA) method which is used to evaluate components in a system by examining the potential failure model to determine the impact that will occur on the component or work system, it is found that the highest Risk Piority Number (RPN) is found in the Seal component. Piston Matic 450, Multiple Clutch/Clutch Pack 360, Selenoid Valve 324. Each potential failure model is classified based on the impact it can have on the success of the system or on user safety by dividing the categories using Logic Tree Analysis (LTA) with the results of most components automatic transmission is included in the type B failure (Outage Problem) where the component causes failure of all or part of the system. Based on the RPN value, the right maintenance is Predictive Maintenance.
Pengaruh Variasi Suhu pada Aerator 10 Watt dengan Panel Surya 80 WP Terhadap Kandungan Oksigen Terlarut Rachmawati, Putri; Agistya Anugrah, Rinasa; Ulikaryani
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1512

Abstract

The fulfillment of energy for humans and animals is increasing day by day. This is evidenced by the fulfillment of electricity needs. This need is ab basic need, where humans and animals need electricity consumption 24 hours a day. So that renewable energy is needed with solar power generation for 12 hours of electricity. This research is focused on fulfilling electricity consumption in nile tilapia fish with 80 WP slar panels and 10 watt aerator power. The purpose of this study was to determine the level of dissolved oxygen in the water, the temperature in the water and the temperature in the surrounding environment. This research method uses a direct observation of dissolved oxygen with a predetermined data collection time using a dissolved oxygen measuring instrument that can be used in water. The result of this study indicate that the dissolved oxygen content produced is 14.61 mg/l with a thermal in water of 26.30C and thermal environment of around 280C.
Pengaruh Penambahan Limbah Plastik Sebagai Alternatif Pengganti Bata Beton Dinding Rumah Prabowo, Dian; Hardini, Probo; Kurniawan, Ipung; Santoso, Agus
Accurate: Journal of Mechanical Engineering and Science Vol. 3 No. 1 (2022): April 2022
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/accurate.v3i1.1513

Abstract

The current handling of waste, especially styrofoam, plastic, used oil is not optimal, these wastes can be used to manufacture other products such as bricks with a simple process. If the waste is processed properly, it will get good economic value. To get a good value or product, it is necessary to do research or testing, as in this study, namely the use of styrofoam waste, plastic and used oil to be used as bricks. In this study, it is hoped that the public will understand and understand the quality of the types of composite bricks and ordinary types of bricks seen from their advantages and disadvantages. Styrofoam waste, plastic and used oil are mixed into bricks with a volume of 21.27%. The equipment used in this research are chopper, stirrer, digital balance and compression test machine. In this study, the results of the III (composite) molded bricks decreased the compressive strength of 59% compared to mortar and cement bricks. The results of the compressive strength test in mold III (composite) were 47.76% higher than that in mold II on composite brick. Composite III bricks are classified as quality III, namely with solid type bricks that cannot get a large load.

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