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MECHAFA PUBLISHER Jalan Kapten Yusuf, Lorong H. Yahya No.5. Desa Meunasah Mesjid, Kecamatan Muara Dua, Kota Lhokseumawe. Aceh. 24351
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Journal of Mechanical Engineering and Fabrication
Published by Mechafa Publisher
ISSN : -     EISSN : 30906598     DOI : -
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
The Journal of Mechanical Engineering and Fabrication (JMEF) is a scientific publication dedicated to advancing knowledge and innovation in the field of mechanical engineering and fabrication technology. JMEF accepts articles from various researchers who conduct research in the field of mechanical engineering and product fabrication, both research results of students, lecturers and other researchers. Each article will be processed with a review from reviewers who are members of JMEF. Focus and Scope The main scope of the journal is to publish original research articles in the area of mechanical engineering. The editorial team aims to publish high-quality and highly applied research and innovation that has the potential to be widely disseminated, taking into consideration the potential mechanical engineering that it could generate with a special focus on Mechanical Engineering with scopes: - Energy Conversion JMEF accepts manuscripts written in the field of energy conversion with several limitations. Given the broad field of energy conversion, JMEF has limited the scope to mechanical and thermal energy conversion. Furthermore, the scope itself constrainted by several criteria. In more detail, JMEF only considers on study of the mechanical properties and design of conversion equipment to improve energy efficiency during the conversion process. Therefore, the topic of chemical processes and reactions that indirectly or directly affect the efficiency of thermal energy conversion is outside the scope of JMEF. - Machine and Mechanism Design - Manufacturing Technology - Material Engineering - Mechatronics - Biomechanics
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 25 Documents
 1   2   3 
Utilization of Coffee Husk and Bagasse Waste as Biobriquettes Yasir Amani Yasir Amani; Muhammad Sayuthi; Dede Irawan; Faisal Muhammad Nur; Heindrix Hidayat
Journal of Mechanical Engineering and Fabrication Vol. 3 No. 1 (2026): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v3i1.28

Abstract

Utilising agricultural waste as an alternative energy source is an effort to reduce dependence on fossil fuels and its negative impact on the environment. This research aims to examine the characteristics of biobriquettes from a mixture of coffee husk waste and sugarcane bagasse using sodium silicate adhesive, as well as analyse the effect of variations in material composition on the physical and thermal properties of biobriquettes. The composition of the ingredients varied in five ratios of coffee skins and sugarcane bagasse (80:20, 70:30, 50:50, 30:70, and 20:80) grams with 15% sodium silicate adhesive. The proximate test results showed that the highest water content was 4.336%, the highest ash content was 0.69%, the highest volatile matter was 87.218%, and the highest bound carbon was 17.946%. For the test results, the highest calorific value was 6231.715 cal/gram with a composition of 80 coffee skins and 20 grams of sugarcane bagasse. This research proves that a mixture of coffee skins and sugar bagasse with sodium silicate adhesive has great potential as an alternative fuel, with the dominance of coffee skins producing more optimal biobriquette characteristics
Arrow C-106 Engine Performance Analysis Based on Mean Time Between Failure (MTBF) Mean Time To Repair (MTTR) and Availability Methods at PT. Pertamina Hulu Rokan Regional 1 Zone 1 Field Rantau Yasir Amani Yasir Amani; Ade Ariansyah Ritonga; M.Iqbal A.Putra Putra; Faisal Muhammad Nur; Heindrix Hidayat
Journal of Mechanical Engineering and Fabrication Vol. 3 No. 1 (2026): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v3i1.29

Abstract

Through data collection and analysis of the performance of the Arrow C-106 Engine at PT Pertamina Hulu Rokan's Rantau Field. The results of the analysis are expected to provide an overview of the actual condition of the machine, its level of reliability, and its availability to support the oil and gas production process. The data analysis method in this research was carried out by processing Arrow C-106 Engine operational data obtained from log sheets, downtime records and company documentation. The data that has been collected is then calculated using three main parameters, namely MTBF, MTTR, and Availability. The results of the analysis of these three parameters are then compared with actual conditions in the field, in order to obtain an overview of the reliability and availability of the Arrow C-106 engine in supporting oil and gas production operations. Mean Time Between Failure (MTBF) shows that the Arrow C-106 Engine has the ability to operate for a relatively long duration before damage occurs. The Mean Time To Repair (MTTR) value obtained is relatively small, so the average repair time required is not too long. The calculated Availability parameters for individual units are in the high range, with most units recording values ​​above 95%. This high level of availability shows that the Arrow C-106 Engine has good operational readiness and can be relied on to support the continuity of oil and gas production.   
Variations in the volume fraction of hybrid composites reinforced with bamboo fiber and fiber-glass fiber influence the Tensile and Impact tests Yasir Amani Yasir Amani; Ferri Safriwardy; Akbar Gultom; Faisal Muhammad Nur; Heindrix Hidayat
Journal of Mechanical Engineering and Fabrication Vol. 3 No. 1 (2026): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v3i1.30

Abstract

This research is to create a prototype plastic composite reinforced with bamboo fiber and fiber-glass with variations in volume fraction 25% SB : 25% FG, 35% SB : 15 % FG and 40% SB: 10% FG, the fiber layer types are arranged in the longitudinal direction (0°) with random laminate orientation, for the matrix using BTQN 157 EX polyyester resin. test specimens using the hand lay up method. Composite testing is in the form of Tensile testing referring to Standard ASTM D638-14 and Impact Testing referring to ASTM D6110-10 using the charpy method. The results in the optimal tensile test were greatest at a volume fraction of 40% SB :15% FG with an average tensile strength value of  = 80.907 MPa, strain ϵ = 2.53% and elastic modulus E = 31.96 MPa. The lowest tensile strength is at a  volume fraction of 35% SB:10% FG with an average value of σ =75.552 Mpa. strain ϵ = 2.09 % and elastic modulus 36.01 MPa. In the charpy impact test, the highest volume fraction was at 35% SB :15% FG with impact strength (HI) = 0.83 .  Absorbed energy (EI) = 46.73 Joules. The lowest impact strength is at a volume fraction of 35% :15% with impact strength (HI) = 0.24 . Absorbed energy (EI) = 30.94, However volume fraction 40%:10% Impact Strength (HI) = 0.79 .  However, the highest absorbed energy (EI) = 64.16 Joules. The observation results show that the fiber volume is good at a percentage of 40% SB with 15% FG suitable for combining as an alternative tensile material. To observe the fracture results of the Impact test specimen, pull-out fiber was found. However, composites reinforced with bamboo fiber have strong enough capabilities for manufacturing product applications   
Evaluation of worker body posture in the ice block moving process using the Rapid Entire Body Assessment (REBA) method Azwinur Azwinur; Ziyad Muammar; Usman Usman
Journal of Mechanical Engineering and Fabrication Vol. 3 No. 1 (2026): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v3i1.31

Abstract

Ergonomics is an important aspect in the industrial work environment, especially in maintaining worker well-being and increasing productivity. One of the main factors in ergonomics is the worker's posture during work activities, which has the potential to cause musculoskeletal disorders (MSDs). CV XYZ, which is engaged in ice block production in Lhokseumawe, has a production capacity of up to 1,200 ice blocks per day with a work process that is still dominated by manual activities. Based on the results of initial observations, complaints of pain were found in the workers' waist and right shoulder, which indicates an ergonomic risk. This study, aXYZ, analyses the relationship between work posture and MSD complaints using the Rapid Entire Body Assessment (REBA) method. The study was conducted descriptively and qualitatively through direct observation, interviews, and literature studies. The REBA assessment was carried out by measuring the body angles at the neck, back, arms, wrists, and legs during work activities. The results showed that for the first worker, the activity of removing ice blocks from the mould received a REBA score of 10 (high risk), while the process of arranging ice into vehicles received a score of 7 (moderate risk). For the second and third workers, each work activity received a score of 7 (moderate risk). These results are supported by Standard Nordic Questionnaire (SNQ) data, which indicated that the dominant complaints were in the shoulders and waist due to repetitive movements and non-ergonomic work postures. It can be concluded that several work activities pose ergonomic risks that require immediate improvement, particularly the process of removing ice cubes from the mould. Improvements can be made through the use of more ergonomic tools and improved work methods to reduce the risk of injury to workers
Design and fabrication of coconut shell charcoal crusher machine for briquette production Azwinur Azwinur; Andi Gilang Wira Pratama Azwinur; Zaini
Journal of Mechanical Engineering and Fabrication Vol. 3 No. 1 (2026): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v3i1.33

Abstract

Charcoal briquettes are an alternative fuel with a high carbon content, high calorific value, and a longer burning time than conventional fuels. Coconut shells are one potential raw material, but the crushing process is still often done manually, making them less efficient. This research aims to design and build a coconut shell charcoal crusher to improve process efficiency and add value to biomass waste. The research method includes the design, fabrication, and testing stages of the device. The manufacturing process includes frame design, material cutting, welding, assembly, and finishing. Tests were conducted with varying charcoal masses to determine the device's performance based on grinding results and processing time. The test results showed that the device is capable of producing two levels of fineness: fine and coarse. A 1 kg charcoal sample yielded 200 grams of fine and 800 grams of coarse charcoal in 1 minute and 50 seconds. A 3 kg charcoal sample yielded 600 grams of fine and 2400 grams of coarse charcoal in 3 minutes and 50 seconds, while a 5 kg sample yielded 1100 grams of fine and 3900 grams of coarse charcoal in 7 minutes and 30 seconds. These results indicate that increasing the amount of material is directly proportional to the processing time and production yield. The fine fraction is more suitable for briquette molding, while the coarse fraction requires further processing. Thus, the designed tool can increase the efficiency of the crushing process and support the utilization of coconut shell waste as an alternative energy source

Page 3 of 3 | Total Record : 25

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