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Contact Name
Frangky Silitonga
Contact Email
frangkyka@gmail.com
Phone
+6285868067100
Journal Mail Official
jurnalmekanikasista@akmil.ac.id
Editorial Address
Kampus Akademi Militer/ AKMIL Jalan Gatot Subroto Jurangombo Selatan Magelang Selatan, Seneng Satu, Banyurojo, Kec. Mertoyudan, Kabupaten Magelang, Jawa Tengah 56172
Location
Kab. magelang,
Jawa tengah
INDONESIA
Jurnal Mekanikasista
ISSN : 23547308     EISSN : 29635365     DOI : -
Core Subject : Engineering,
Jurnal Mekanikasista jurnal yang mempublikasikan dan mewadahi hasil penelitian bidang teknik mesin yang berkaitan dengan perkembangan teknologi miiter yang berfokus pada teknik mesin secara umum. Jurnal ini mempublikasi hasil penelitian yang dilakukan civitas Akmil ataupun berkolaborasi dengan institusi di luar Akmil. Penulis dalam jurnal ini terdiri dari Dosen, Praktisi dan Taruna. Semua hasil penelitian yang akan dipublikasi harus melewati proses review oleh reviwer sebagaimana telah di juntuk, tugas dan janggung jawabnya oleh Penangung Jurnal Mekanikasista. Terbit dua Kali dalam setahun pada setiap bulan Nopember dan Mei
Articles 30 Documents
PENGARUH PENGGUNAAN EXPANSION VALVE BERBAHAN DASAR MATERIAL DENGAN KONDUKTIVITAS RENDAH TERHADAP PERFORMA AC MOBIL DINAS TNI-AD JENIS ISUZU PANTHER DENGAN VARIASI BEBAN PENDINGINAN Wijanarko, Heri; Sugihandoko; Sukahar
JURNAL MEKANIKASISTA Vol. 11 No. 1 (2023): NOVEMBER 2023
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i1.140

Abstract

Comfort in a vehicle usually uses an air conditioning system. AC is a type of machine that works following a thermodynamic cycle, namely the vapor compression cycle. A refrigeration machine depends on the ability of the compressor to meet the amount of refrigerant gas that needs to be circulated. The compressor is a tool for pumping cooling material (refrigerant) so that it continues to circulate in the system. The performance of the car's AC compressor is controlled by the thermostat, where the thermostat signals whether it is active or not active depending on whether the temperature in the car has been reached or not.This research includes variations in cooling load with a fixed compressor rotation of 759 RPM, each variation of cooling load is tested with a fixed compressor rotation of 759 RPM using one R-134a refrigerant to determine the COP, then this research is continued by calculating the on-off time of the compressor. to save energy used.The results of the research carried out show that the greater the cooling load, the greater the compressor inlet pressure and compressor outlet pressure (∆P = P1 – P2).
PENGARUH PROSES QUENCHING DAN HEATTREATMENT PADA VELG BESI MOBIL TOYOTA KIJANG LGX HP, Bambang; Hafid, Achmad; Lufti, Aryananta
JURNAL MEKANIKASISTA Vol. 11 No. 1 (2023): NOVEMBER 2023
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i1.141

Abstract

Iron precious metals have been used since antiquity, although those with lower melting points, which were used earlier in human history, pure iron are relatively softer but cannot be obtained through smelting. This material hardens and is significantly strengthened by carbon impurities, especially in the smelting process. With a certain proportion of carbon (between 0.002% and 2.1%) it will produce harder steel than pure iron which may reach 1000 times. Iron compounds have many benefits in daily life. Iron has a very high economic value so many people make iron as a business land. Most of the usefulness of iron is in the world of construction. Many material elements are used in the world of iron-based construction because the strength of the modified iron is more beneficial and useful. This is because the cast properties of this alloy are classified as good, in addition to corrosion resistance and easy to process machines, alloy types this is widely used in the automotive industry object used is the LGX Toyota kijang alloy wheels. In this study, to obtain data, several tests were carried out, namely Heat Treatment, Quenching, Aneling, composition testing, and tensile testing. The results showed that the effect of heat treatment and quenching on iron alloy specimens was the increase in the value of hardness and tensile strength values, when compared with non-heat treatment specimens. While the strength of the pulses is not measurable because the specimens are too brittle .
ANALISIS PERBANDINGAN SIFAT FISIS DAN MEKANIS ALUMINIUM PADA BODY MOBIL LAND ROVER TAHUN 1982 YANG DI LAS DAN ROW MATERIAL Aryananta Lufti; Budi Harjanto; Nurtjahyono; Silitonga, Frangky
JURNAL MEKANIKASISTA Vol. 11 No. 2 (2024): MEI 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i2.180

Abstract

The main objectives of the research are stated in the documents provided, including: Knowing the strength of aluminum bodies, and analyzing the performance of bodies that frequently experience collisions. The scope of this research is the scope of this research includes evaluating the strength of aluminum and the welding process as well as tests carried out to evaluate the physical and mechanical properties of aluminum materials, including tensile, bending, hardness, composition and microstructural analysis tests. The research method used is a quantitative research method that emphasizes the results of experiments in a complete and measurable way, thereby providing a comprehensive understanding of the characteristics of aluminum in automotive applications. The results and findings of this research are. Overall, the research findings contribute to the understanding of aluminum characteristics in automotive applications, and offer implications for improving material selection, welding techniques, and structural design in the automotive sector. Opportunities that develop ahead utilizing the automotive industry can improve practices, products, and development processes, ultimately leading to advances in automotive engineering and design.
ANALISA UJI PERBANDINGAN KEAUSAN KAMPAS REM CAKRAM ANTARA KAMPAS REM MITSUBISHI DENGAN KAMPAS REM INDOPART PADA KENDARAAN MITSUBISHI L 300 Wijanarko, Heri; Sugihandoko; Lufti, Aryananta
JURNAL MEKANIKASISTA Vol. 11 No. 2 (2024): MEI 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i2.181

Abstract

To determine the quality of brake pads, this writing explains the method for assessing the quality of Mitsubishi and Indopart brake pads through three testing processes: Brinell hardness test, wear test, and material composition test. In the Brinell hardness test, data is obtained by creating specimens for each brake pad, and each specimen undergoes testing at 3 different points on the brake pad surface. The wear test follows a similar procedure to the hardness test, but the results are obtained using a wear testing machine. For the material composition test, the dominant elements present in the brake pads are determined using analytical chemical solutions. This allows identification of the dominant elements in both Mitsubishi and Indopart brake pads.
ANALISA PERHITUNGAN ULANG RODAGIGI MATAHARI PADA GARDAN BELAKANG LAND ROVER HP, Bambang; Budi Santoso, Edy; Nurtjahyono
JURNAL MEKANIKASISTA Vol. 11 No. 2 (2024): MEI 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i2.182

Abstract

This study aims to evaluate the need for a sun gear in the rear axle of the Land Rover, which is difficult to source domestically. The research focuses on determining the appropriate size, suitable materials, and specific details. Quantitative analysis is conducted to recalculate and obtain the required dimensions. The research concludes that the appropriate size has been determined through meticulous calculations, enabling the fabrication of a sun gear suitable for the Land Rover. This study is crucial due to the urgent need for spare parts to ensure the smooth progress of Taruna's basic driving training
ANALISIS PENGARUH HEAT TREATMENT 900C BAJA ST40 PADA BODY TRUK UNIMOG MILITER TERHADAP SIFAT FISIS DAN MEKANIS Harjanto, Budi; Lumintang, D.Ricky; Sukahar
JURNAL MEKANIKASISTA Vol. 11 No. 2 (2024): MEI 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i2.183

Abstract

TNI-AD is an army unit whose mobility is mostly in the mainland area. In mengkaver all regions of Indonesia, requires a vehicle that is able to cross all terrain both flat terrain, and bumpy terrain that is difficult to pass by ordinary vehicles. As well as being able to transport personnel with a high level of mobility in the field of operation, so it requires a truck that is tough enough to overcome it. No less important is also the ability of the body of the truck, so that in transporting personnel and logistics must be strong and use materials made of armored are. This study aims to analyze and test the material from the content of the type of steel used in the truck body Unimog on physical and mechanical properties, when heat treated with a certain temperature.Steel type ST40 steel coating on military Unimog trucks has high hardness, can be seen from the results of hardness tests and tensile tests carried out in this experiment. The steel is broken when the steel is pulled with a strength of 5910 kg after undergoing a heat treatment process without being welded. Then the steel is broken when the steel is pulled with a strength of 4360 kg after undergoing a welded heat treatment process. Pure steel containing carbon content below 1% is a type of high quality steel, so it is suitable for use as a steel coating on the body of military vehicles.
ANALISA KERUSAKAN PENGAIT PEGAS LARAS PISTOL P1 PINDAD Oktosatrio, Suhendro; Sugihandoko; Tjandra Kusuma, Taufan
JURNAL MEKANIKASISTA Vol. 11 No. 2 (2024): MEI 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i2.184

Abstract

While the goals and objectives of the study to analyze the physical properties and mechanical properties of the P1 Pindad Pistol barrel spring hook material because the barrel spring hook is a very important part of the barrel, especially the gun. If the spring hook of this barrel becomes or breaks then the development process will not be such that the project will not go according to the plan of the barrel.From the results of the tests that have been carried out both the test and the test the final result cannot be concluded that the results of the test are the result of the process.easily damaged or brittle clean, but from the results of micro trials produced a lot of mistakes, because in the process of heat treatment of the barrel is not to form a bainit structure that makes steel strong resistance to pressure.Suggestions from the author for the manufacture of the barrel forward so that in the process of special heat treatment when cooling is attempted to form bainit which makes the barrel becomes ductile and not easily broken or damaged.
ANALISIS PERBANDINGAN SIFAT FISIS DAN MEKANIS PADA PISTON MOTOR PRODUK CHINA (KANZEN) DAN MOTOR PRODUK JEPANG (HONDA GL) Sukahar; Hafid, Achmad; Suparja
JURNAL MEKANIKASISTA Vol. 11 No. 2 (2024): MEI 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v11i2.185

Abstract

This research is about comparing the physical and mechanical properties of motorbike piston made in China (Kanzen) and motorbike pistons made in Japan (Honda GL). The aim is to find out which material structure is better between motorbike piston made in China and motorbike piston made in Japan. Because in field use Japanese motorbike pistons are superior to motorbike piston made in China.The piston is an engine component that changes or transfer combustion pressure into straight motion (sliding) which then, through the piston rod, piston rod and crankshaft, converts the straight motion of the piston into rotary motion. This piston has an aluminum alloy composition with the dominant elements, namely Mn, Zn, Ti, Cr, Pb, and Sn.From the test of the material composition of these two pistons, the material elements are almost the same, but the Honda GL motorbike pistons is better than the Kanzen motorbike pistons, judging from its elements. From the hardness test, it turns out that motorbike pistons made in China (Kanzen) are superior to pistons made in Japan (Honda GL) but that doesn’t mean that hard is good for the piston, then from the micro structure the piston of Japanese motorbikes (Honda GL) are better than Chinese motorbikes (Kanzen) because the crystals spread out so that they can cause cracks in the piston more quickly.
ANALISA PERBANDINGAN PENGGUNAAN BIODIESEL DAN SOLAR TERHADAP UJI PRESTASI MESIN DIESEL ISUZU 120 PS Aryananta Lufti; Harjanto, Budi; Silitonga, Frangky
JURNAL MEKANIKASISTA Vol. 12 No. 1 (2024): NOPEMBER 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v12i1.236

Abstract

To support teaching and learning activities at Akmil, many diesel-engined trucks are needed that use diesel. Considering that diesel is not a renewable resource, biodiesel is a more environmentally friendly alternative, because it is produced from vegetable or animal oil. Testing the performance of diesel engines with biodiesel and diesel at various speeds shows differences, although not significant. This can be used as a guideline in selecting fuel, especially for TNI AD vehicles, and it is hoped that biodiesel can be widely known as an alternative fuel.
ANALISA PERBANDINGAN PENGGUNAAN BIODIESEL DAN DIESEL SHELL TERHADAP UJI PRESTASI MESIN DIESEL PADA ISUZU PANTHER 95 Sukahar; Hafid, Achmad; Suparja
JURNAL MEKANIKASISTA Vol. 12 No. 1 (2024): NOPEMBER 2024
Publisher : PPM Sdirjianbang Akademi Militer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63824/jtmp.v12i1.237

Abstract

The engine capacity of a vehicle, especially a diesel engine, is greatly influenced by the fuel used, in this case the diesel used. What is meant by engine capacity is the performance produced by the engine, including the power produced by the engine, the specific fuel coefficient, and others. Therefore, choosing the right diesel will certainly make the engine able to produce good performance but diesel consumption remains efficient. So an alternative replacement is needed when the diesel runs out, one of which is using biodiesel. Biodiesel is a fuel made from base oil or renewable oil sources that are transesterified lipids into the desired ester by removing fatty acids. So biodiesel is the closest alternative to replacing fossil fuels which are the main source of transportation energy. Based on the test experiments of diesel engine performance using biodiesel and Shell diesel, namely at 2500 rpm, 2300 rpm, 2000 rpm, 1800 rpm, and 1600 rpm, there are differences in engine performance, although not significant, but can still be used as a guideline for choosing the right fuel, especially for vehicles in the Indonesian Army and if later biodiesel is known to the wider community, it can be used as an alternative fuel and can be considered to be used as fuel for diesel vehicles in the Indonesian Army.  

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