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All Journal Rekayasa Mesin International Journal of Mechanical Engineering Technologies and Applications (MECHTA)
Aspiyansyah, Aspiyansyah
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Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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JARAK ROTOR YANG OPTIMAL TERHADAP RIPPLE PLATE PADA MESIN RIPPLE MILL UNTUK EFISIENSI HASIL PEMECAH BIJI KELAPA SAWIT CB MODIPALM KAPASITAS 8 TON/JAM Harianto, Agus; Aspiyansyah, Aspiyansyah; Faot , Ecy Yedija
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1840

Abstract

A ripple mill machine is one of the crucial pieces of equipment in the palm oil processing industry to separate oil palm kernels into fruit kernels and shells. One of the key components in this machine is the rotor and ripple plate, which play a role in the process of breaking seeds. This study aims to determine the optimal distance between the rotor and ripple plate on the ripple mill machine. The test was conducted using a CB Modipalm-type ripple mill machine. The parameter observed was the cracking efficiency of oil palm kernels, which was measured based on the percentage of cracked seeds, whole seeds, and crushed kernels. The results showed that the optimal distance between the rotor and ripple plate was 5 mm, with an efficiency value of 96.62%.
PENGARUH LOAD CAPACITY LISTRIK TERHADAP EFFISIENSI TURBIN UAP MODEL C6-R8-ER : STUDY KASUS PADA PT. SURYA BORNEO INDUSTRI Tratama, Teddy; Aspiyansyah, Aspiyansyah; Harianto, Agus; Rahmandika, Kukuh
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1844

Abstract

Steam turbines are widely used at many industrial. The purpose of this research was to study the effect of load capacity on steam flow mass rate.  Load Capacity is directly proportional to the steam flow mass rate to increase Steam turbine power. While the effect of load capacity on steam turbine efficiency, where it shows the actual performance of the steam turbine which is very important to minimize operating costs. The highest thermal efficiency of 21.49% and the lowest thermal efficiency of 20.17% in the load capacity variation showed that the steam turbine can still be categorized in good condition where the operating period has reached 5 years. It is necessary to carry out preventive maintenance on steam turbine components so that they remain reliable in supporting the company's operational and production activities.
ANALISIS BENTUK PENAMPANG BULAT, SEGI EMPAT DAN BULAT BERONGGA TERHADAP FATIGUE FAILURE DAN TEGANGAN PADA MATERIAL BAJA ST 60 Aspiyansyah, Aspiyansyah; Widayat, Adriant
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1845

Abstract

Metal fatigue is a problem in the use of metals in their applications, especially when they are exposed to cyclic or repetitive loads. This study analyzes the effect of round, rectangular and spherical cross-sections on fatigue failure of ST 60 steel. By providing a fatigue test load of 150 N and a rotating speed of 1500 rpm and a test specimen installation position with a distance of 70 cm, it was found that the round cross-section broke when experiencing 26,471 cycles, the rectangular cross-sectional shape broke when experiencing 115,515 cycles and the hollow round shape broke when experiencing 201,983 cycles. The largest shear stress is generated by a spherical cross-section with a value of 247.7 N/mm2 and the lowest is by a material with a hollow spherical cross-section with a value of 194.478 N/mm2. Normal stress and the highest shear stress are produced specimens with a spherical cross-sectional shape, this is because the spherical cross-section has a tendency to spread normal stress evenly over its surface.
PENINGKATAN KINERJA MESIN 2 SILINDER DENGAN PENAMBAHAN OCTANE BOOSTER PADA RON 90 Hariyadi, Muhammad Arif; Aspiyansyah, Aspiyansyah; Harianto, Agus; Riduan, Agus Adjie
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1846

Abstract

Octane number value in fuel plays an important role in the performance of a 2 cylinder gasoline motor. This study aims to increase the octane number value by using octane booster. The method used by mixing RON 90 with octane booster to get engine performance consisting of torque, power, specific fuel consumption and efficiency. The results show that the addition of 3 ml of octane booster to 1 liter of RON 90 will provide an optimum value on the performance of a 2-cylinder gasoline motorcycle engine.
Influence of Co-Firing PKS (Palm Kernel Shell) with Coal on Boiler Efficiency Combustor Type: Reciprocating Servo Grate Tratama, Teddy; Aspiyansyah, Aspiyansyah; Harianto, Agus; Budi, Agung Prasetyo
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 2 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2020.001.02.6

Abstract

Biomass fuel, recognized for its renewable and environmentally friendly characteristics, presents an attractive option for energy production. This study explores a co-firing system incorporating palm kernel shell (PKS) and coal as fuel feeds for a boiler, aiming to optimize energy production and reduce gas emissions. The influence of co-firing PKS with coal on fuel feed rate and boiler efficiency was analyzed. Boiler efficiency measurements and calculations were conducted using the indirect method. The fuels were co-fired in various ratios: 65:35, 60:40, 55:45, and 50:50 (PKS). The results show that increasing the coal ratio in the fuel blend reduces the fuel feed rate and increases boiler efficiency. The optimized co-firing ratio of PKS to coal was determined to be 60:40, achieving a maximum boiler efficiency of 55.38%.
Analysis of Permeability and Compressive Strength of Local Sand of West Kotawaringan District as Molding Sand in Metal Casting Aspiyansyah, Aspiyansyah; Harianto, Agus; Mustofa, Edi
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 2 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2020.001.02.7

Abstract

Sand is the most widely used material as a molding material in the metal casting process. Sand can be used as a molding medium if it meets the requirements, including good formability and good permeability. This research was conducted by examining West Kotawaringin local sand by providing several tests, which include a clay content test, a water content test, a formability test, and a permeability test. The test results for local sand showed that the permeability value of sand was 0.001-0.032 cm/sec and the compressive strength value of sand was 0.073-0.126 kg/cm2. These results show that the local sand of West Kotawaringin meets the requirements of molding sand so that it can be used as molding sand in metal casting.
Performance Enhancement of a 2-Cylinder Engine with Naphthalene Addition to RON 90 Hariyadi, Muhammad Arif; Aspiyansyah, Aspiyansyah; Harianto, Agus; Pratama, Rubi
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 2 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2020.001.02.8

Abstract

The octane number of fuel is crucial for the performance of a two-cylinder gasoline engine. This study aims to enhance the octane number by using naphthalene. The method involved mixing RON 90 gasoline with naphthalene to evaluate engine performance parameters, including torque, power, specific fuel consumption, and efficiency. The results indicate that adding 20 mg of naphthalene to 1 liter of RON 90 gasoline optimizes the performance of a two-cylinder gasoline motorcycle engine.
ROTARY SOOT BLOWING TREATMENT INCREASES EFFECTIVENESS OF ECONOMIZER CAPACITY OF 58.5 TPH AT PT SBI INDONESIA Harianto, Agus; Aspiyansyah, Aspiyansyah; Rahman, Muhammad Muksin Galih
International Journal of Mechanical Engineering Technologies and Applications Vol. 5 No. 2 (2024)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2024.005.02.11

Abstract

In an industrial era that increasingly prioritizes energy efficiency and environmental sustainability, optimizing the use of energy in the production process is crucial. One of the key aspects of achieving this goal is utilizing waste heat to improve the overall efficiency of the system. In this context, the use of economizers has become a major focus in the boiler industry. PT Surya Borneo Industri (SBI), as an industrial entity committed to energy efficiency and environmental sustainability, has adopted the latest technology in a bid to improve the performance of their boiler system. One of the latest innovations they have implemented is the use of rotary soot blowing, an automated device designed to clean the heat exchanger surfaces in the economizer. This study aims to determine the effectiveness value of the economizer before and after the rotary soot blowing treatment on the PT SBI boiler system. Through a series of field observations and data analysis, this research reveals the potential benefits of using rotary soot blowing in improving thermal efficiency, reducing energy losses, and contributing to the sustainability of industrial operations. The results obtained showed that the economizer effectiveness value before the rotary soot blowing treatment was 55, 54, 55, and 54%, and after the rotary soot blowing treatment, the effectiveness value increased to 59, 60, 61, and 60%. This is due to maintenance activities, namely cleaning dust or soot attached to the economizer pipes.
JARAK ROTOR YANG OPTIMAL TERHADAP RIPPLE PLATE PADA MESIN RIPPLE MILL UNTUK EFISIENSI HASIL PEMECAH BIJI KELAPA SAWIT CB MODIPALM KAPASITAS 8 TON/JAM Harianto, Agus; Aspiyansyah, Aspiyansyah; Faot , Ecy Yedija
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1840

Abstract

A ripple mill machine is one of the crucial pieces of equipment in the palm oil processing industry to separate oil palm kernels into fruit kernels and shells. One of the key components in this machine is the rotor and ripple plate, which play a role in the process of breaking seeds. This study aims to determine the optimal distance between the rotor and ripple plate on the ripple mill machine. The test was conducted using a CB Modipalm-type ripple mill machine. The parameter observed was the cracking efficiency of oil palm kernels, which was measured based on the percentage of cracked seeds, whole seeds, and crushed kernels. The results showed that the optimal distance between the rotor and ripple plate was 5 mm, with an efficiency value of 96.62%.
PENGARUH LOAD CAPACITY LISTRIK TERHADAP EFFISIENSI TURBIN UAP MODEL C6-R8-ER : STUDY KASUS PADA PT. SURYA BORNEO INDUSTRI Tratama, Teddy; Aspiyansyah, Aspiyansyah; Harianto, Agus; Rahmandika, Kukuh
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1844

Abstract

Steam turbines are widely used at many industrial. The purpose of this research was to study the effect of load capacity on steam flow mass rate.  Load Capacity is directly proportional to the steam flow mass rate to increase Steam turbine power. While the effect of load capacity on steam turbine efficiency, where it shows the actual performance of the steam turbine which is very important to minimize operating costs. The highest thermal efficiency of 21.49% and the lowest thermal efficiency of 20.17% in the load capacity variation showed that the steam turbine can still be categorized in good condition where the operating period has reached 5 years. It is necessary to carry out preventive maintenance on steam turbine components so that they remain reliable in supporting the company's operational and production activities.
Co-Authors AGUS HARIANTO Budi, Agung Prasetyo Faot , Ecy Yedija Hariyadi, Muhammad Arif Mustofa, Edi Pratama, Rubi Rahman, Muhammad Muksin Galih Rahmandika, Kukuh Riduan, Agus Adjie Tratama, Teddy Widayat, Adriant