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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 20 Documents
 1   2 
Design of CNC engraving machine production process for acrylic material with working dimensions of 240x400 mm Bukhari, Bukhari; Teuku Zia Zuliansyah; Edi Saputra
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 1 (2024): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i1.1

Abstract

The design of the CNC engraving machine production process for acrylic material is carried out to meet market demand for products that require special molds or shapes on acrylic materials. This CNC engraving machine has an orientation on materials made from acrylic media and a knife blade for engraving and a drill bit for cutting acrylic. And has dimensions of 51 x 50 cm and has an engraving area of 420 x 400 cm. The equipment used to make CNC machine components consists of a hand drill, cutting grinder, clamping pliers, L-key set, caliper, ruler and meter. The assembly of the CNC Engraving machine used in this study is the Non-Permanent Assembly. The results of the production of mechanical components produced using the machining process have been obtained, consisting of: the lower frame of the machine, the x-axis pole, the work table, the x-axis, the z-axis. The design form that has been made, then the mechanical components that have been produced will be assembled with finished components that are available on the market. The results of the CNC engraving acrylic machine production process take up to 49.2 minutes. The working area of the machine is the length of the x-axis working area = 400 mm, the length of the y-axis working area = 500 mm, the length of the z-axis working area = 120 mm
Design and manufacture of coconut shell charcoal crusher for briquette Azwinur; Andi Gilang Wira Pratama; Zaini
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 1 (2024): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i1.5

Abstract

Coconut shell waste in the community is often not utilized, so a solution is needed, one of which is by processing it into briquettes. Charcoal briquettes are solid fuels that contain carbon, have high calorific value, and can burn for a long time. These briquettes are made from organic waste, such as dry leaves, coconut shells, rice husks, and sawdust. The purpose of this study was to design a coconut shell charcoal crusher as a raw material for briquettes, with the hope of reducing coconut shell waste, increasing its economic value, and providing an alternative fuel for household needs. The process of making the tool begins with frame design, iron cutting, welding using the SMAW method, assembly, and finishing. The results of the study showed that the results of making a coconut shell charcoal crusher for briquette raw materials can function well. The distribution of the resulting size shows that the machine has a consistent ability to produce fine particle sizes, which are in accordance with the needs of briquette raw materials. The efficiency of time per kilogram of material processed tends to vary depending on the capacity used
Fabrication and performance testing of direct flow heat exchanger using baffle and without baffle Azwinur; Darussalam Bahri; Al Fathier
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 1 (2024): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i1.6

Abstract

Heat Exchangers atau alat penukar/pemindah panas adalah alat-alat yang digunakan untuk mengubah temperatur fluida atau mengubah fasa fluida dengan cara mempertukarkan panasnya dengan fluida lain. Pada sebuah penukar panas, kemampuan mempertukarkan panas sangat ditentukan oleh jenis aliran fluida dan fluida yang melewati penukar panas. Tujuan penelitian untuk mengukur dan menganalisis peningkatan koefisien perpindahan panas dengan adanya baffle dibandingkan dengan heat exchanger tanpa baffle. Metode penelitian yang dilakukan adalah dengan fabrikasi alat heat exchanger menggunakan proses las SMAW, hasil pengelasan dilakukan inspeksi secara visual untuk mendeteksi cacat pengelasan pada sambungan. Hasil pemeriksaan tidak ditemukan cacat las. Berdasarkan data pengujian didapatkan data inlet fresh air dan outlet fresh air temperature dan velocity tanpa menggunakan baffle 33.30C  menjadi 47,1oC pada kecepatan 3,19 m/s – 3,26 m/s, inlet fresh air dan outlet fresh air temperature dan velocity menggunakan baffle 38,60C menjadi 53,30C pada kecepatan 2,27 m/s – 2,58 m/s dan sisi lain inlet fresh air dan outlet fresh air temperature dan velocity menggunakan baffle II  memiliki temperature 36,10C menjadi 50,30C pada velocity 2,27 m/s – 2,58 m/s
The effect of variation in E7018 electrode current on the bending strength of carbon steel material Azwinur; Muhammad Arga Syahandra; Saifuddin
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 1 (2024): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i1.7

Abstract

Welding is one of the essential metal joining methods in modern industry. In carbon steel welding such as ASTM A36, SMAW is often chosen because of its ability to produce strong joints with economical operating costs. However, the mechanical properties of the welded joints on this steel are greatly influenced by the welding process parameters, such as the type of electrode and the welding current setting. The purpose of this study was to evaluate the effect of variations in welding current with E7018 electrodes on the bending properties of ASTM A36 carbon steel material. The stages of the study were material welding, visual and penetrant non-destructive tests and bending tests. The results of the study showed that the best results were obtained on the cover side with a current of 110A, where the heat generated was sufficient to create a strong and flexible joint against deformation. While on the root pass side the highest bending value was at a current of 120A
The effect of welding current on the mechanical properties of ST60 steel in the SMAW welding process Tuafiq; Fahrul Rozi; Abubakar
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 1 (2024): Maret
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i1.8

Abstract

Welding current greatly affects the strength of the material connection so that a study is needed considering the many uses of welding processes in industrial construction. This study aims to determine the effect of welding current on mechanical properties using the SMAW welding process with current variations of 100 A, 110 A and 120 A. The material used is ST60 steel with a thickness of 10 mm, a single V butt joint type with an angle of 70 °. From the results of tests that have been carried out on test specimens using current variations, data is obtained that the average stress value of each current variation is, current 100A = 25.49 Kgf / mm², current 110A = 27.23 Kgf / mm² and current 120A = 26.49 Kgf / mm². The average strain value of each current variation is, current 100A = 1.5%, current 110A = 2% and current 120A = 2.16%. The average elastic modulus value of each current variation is, current 100A = 16,360 N/mm², current 110A = 12,554 N/mm² and current 120A = 11,947 N/mm². Based on these data, the optimal current is 120A.
Analysis of the effect of variations in cutting speed and feed depth in the ST42 steel turning process on surface roughness Saifuddin, Saifuddin; Sumardi, Sumardi; Faturrahman, Abdul
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 2 (2024): September
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i2.9

Abstract

The quality of the turning results, especially on the surface, is greatly influenced by three parameters, namely spindle speed, feed rate, and depth of cut. The level of surface flatness greatly affects the results of the workpiece after being processed on a lathe. Based on field experience, in the turning process, in order to obtain good surface flatness quality, good component selection is also required. The selection of components in question is one that has a significant effect on the results of the workpiece feed. The lathe tool is the main component in the machining process besides the lathe and the workpiece. The purpose of this study was to determine the surface roughness value of ST42 steel with variations in spindle rotation and cutting depth in the turning process. This test was carried out with a PL-1000 G model lathe with ST42 steel specimens. The roughness tester used was the Mitutoyo SJ-310. The results obtained were the best surface roughness value at 550 rpm spindle rotation of 3.925 µm at a depth of 0.2 mm. The best surface roughness value at 1020 rpm spindle speed is 3.258 µm at a depth of 0.2 mm. The best surface roughness value at 1800 rpm spindle speed is 1.551 µm at a cutting depth of 0.4 mm
Design and construction of a press tool for making plastic paving blocks Usman, Usman; Syukran, Syukran; Armansyah, Agus
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 2 (2024): September
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i2.10

Abstract

Paving block industries have emerged in the North Aceh Regency area, especially for the Baktiya District area where there are 7 paving block industries, which is due to the increasing demand for paving blocks of 1000 units per day in 2019 for office yards, parking lots, for pedestrian sidewalks and for parks. The compressive strength that can be accepted by paving blocks with PET plastic shredded substitution for each composition is as follows, in normal paving blocks (0%) of 11.32 MPa, in paving blocks with an addition of 0.3% of 12.31 MPa, in paving blocks with an addition of 0.4% of 12.70 MPa, in paving blocks with an addition of 0.5% of 14.55 MPa, and in paving blocks with an addition of 0.6% of 11.82 MPa. The percentage of the ability of paving blocks with PET plastic shredded substitution for each composition in absorbing water is as follows, in normal paving blocks (0%) it is 10%, in paving blocks with the addition of 0.3% it is 8%, in paving blocks with the addition of 0.4% it is 7%, in paving blocks with the addition of 0.5% it is 5%, and in paving blocks with the addition of 0.6% it is 9% Mpa
Design and Performance Evaluation of a Palm Oil Empty Fruit Bunch Shredding Machine to Enhance Compost Fertilizer Production Efficiency Yusuf, Ilyas; Darmein, Darmein; Hidayat, T Rian
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 2 (2024): September
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i2.11

Abstract

Paving block industries have emerged in the North Aceh Regency area, especially for the Baktiya District area where there are 7 paving block industries, which is due to the increasing demand for paving blocks of 1000 units per day in 2019 for office yards, parking lots, for pedestrian sidewalks and for parks. The compressive strength that can be accepted by paving blocks with PET plastic shredded substitution for each composition is as follows, in normal paving blocks (0%) of 11.32 MPa, in paving blocks with an addition of 0.3% of 12.31 MPa, in paving blocks with an addition of 0.4% of 12.70 MPa, in paving blocks with an addition of 0.5% of 14.55 MPa, and in paving blocks with an addition of 0.6% of 11.82 MPa. The percentage of the ability of paving blocks with PET plastic shredded substitution for each composition in absorbing water is as follows, in normal paving blocks (0%) it is 10%, in paving blocks with the addition of 0.3% it is 8%, in paving blocks with the addition of 0.4% it is 7%, in paving blocks with the addition of 0.5% it is 5%, and in paving blocks with the addition of 0.6% it is 9% Mpa.
The effect of temperature variation on the surface hardness of AISI 1045 steel using palm shell media with the pack carburizing method Murtadhahadi, Murtadhahadi; Syarif, Jenne; Zannun, Zannun
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 2 (2024): September
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i2.12

Abstract

material for making machine components such as shafts, gears, chisels and bearings in motor vehicles. The use of medium carbon steel in the industrial world is accompanied by adjustments to the required metal conditions, such as the machining process and surface treatment. Pack Carburizing is a process of adding carbon elements or chemical heat treatment which is done by changing the chemical composition of the steel surface by heating at austenite temperature. To obtain maximum pack carburizing results, several processes need to be carried out, namely heating temperature, Holding Time, carbon media and quenching. The purpose of this study was to determine the effect of variations in heating temperature on increasing hardness with the Pack Carburizing heat treatment process. The experimental method used in heat treatment at different temperatures was 850 ° C, 900 ° C, 950 ° C and a holding time of 2 hours. From the results of hardness testing on raw materials, the average hardness value was obtained at 64.20 HRC, after the pack carburizing process the average value at a temperature of 850 °C was 75.93 HRC, and at a temperature of 900 °C it was 88.20 HRC, and at a temperature of 950 °C the highest average value was obtained at 90.23 HRC
The effect of welding electrode variations on the mechanical properties of AISI 1018 material using the SMAW process Saifuddin, Saifuddin; Zaini, Zaini; Putra, M. Adriansyah
Journal of Mechanical Engineering and Fabrication Vol. 1 No. 2 (2024): September
Publisher : Journal of Mechafa Engineering and Fabrication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64273/jmef.v1i2.13

Abstract

Welding quality is largely determined by welding parameters such as welding current, welding electrode and the type of welding process used. The type of electrode with a certain chemical composition has an impact on the fusion that occurs between the parent material and the welding electrode. so that a study is needed on the effect of electrodes on the quality of the joint. The purpose of this study was to determine the effect of welding electrode variations on the mechanical properties of AISI 1018 material using the SMAW process. The material used in this study was AISI 1018 low carbon steel welded using SMAW welding with hardness and tensile strength testing. The results showed that the highest average hardness value was found in the Weldmetal area found in specimen 1 of the E 7016 electrode, which was 15.33 HRC and E 7018 was 20.20 HRC. The weldmetal area of ​​specimen 2 from electrode E 7016 is 18 HRC and E 7018 is 21.50, The weldmetal area of ​​specimen 3 from electrode E 7016 is 12 HRC and E 7018 is 19.50 HRC and from tensile testing it is known that the average value of raw material is 465.09 Mpa. For welding E 7016 is 492.67 Mpa and E 7018 is 522.79 Mpa

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