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Jurnal Teknik Mesin
Published by Politeknik Negeri Malang
ISSN : 22524444     EISSN : 25492063     DOI : https://doi.org/10.33795/j-meeg.v2i2.3007
Core Subject : Science, Engineering,
Automotive Engineering Electrical & Electronics Engineering Energy Engineering Mechanical Engineering
Jurnal Teknik Mesin merupakan jurnal ilmiah nasional yang terbit secara berkala dengan artikel-artikel ilmiah dari hasil penelitian di bidang keilmuan teknik mesin meliputi Bidang : Material maju, Perawatan mesin (maintenance), Rekayasa mesin (mechanical engineering), Konversi energi, Otomotif  (Automotive), Sistem kontrol dan K3 (keselamatan dan kesehatan kerja).
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 78 Documents
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PENGARUH VARIASI KECEPATAN PUTARAN RODA DAN BAHAN KAMPAS TERHADAP TEMPERATUR OPERASIONAL REM CAKRAM : EFFECT OF WHEEL ROTATION SPEED VARIATIONS AND PAD MATERIAL ON THE OPERATIONAL TEMPERATURE OF DISC BRAKE Dias Muhammad Zaidaan Rizky; Eko Yudiyanto
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.8294

Abstract

This study investigates the influence of wheel rotational speed and brake pad material on the temperature of disc braking systems. The experimental setup incorporates an LM393 speed sensor and a MAX6675 thermocouple temperature sensor, both interfaced with an Arduino microcontroller, with data output displayed via a MATLAB GUI and an LCD screen. Testing was conducted in three repetitions across four rotational speed variations (1000, 1500, 2000, and 2500 rpm) and three types of brake pad materials: standard, semi-metallic, and full-metallic. The results indicate a direct correlation between rotational speed and braking temperature. At 2500 rpm, the highest temperatures recorded were 83.3°C for full-metallic pads, 59°C for semi-metallic pads, and 47°C for standard pads. These findings confirm that both the pad material and wheel speed significantly affect the heat generation during braking.
ANALISIS KARAKTER MIKROSTRUKTUR PERMUKAAN DAN TENSILE SS304 PADA PENGELASAN SMAW DENGAN ARUS 85 AMPERE: ANALYSIS OF MICROSTRUCTURE AND TENSILE PROPERTIES OF SS304 UNDER SMAW WELDING AT 85 AMPERE Hanif Ridhwanul Majid; Moch Wisnu Arif Sektiono,S.Si., M.Si.; Setiyo Rojikin, S.T., M.T.
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.8600

Abstract

This study aims to analyze the crystal structure changes on Stainless Steel 304 (SS304) metal surface welded using Shielded Metal Arc Welding (SMAW) method at 85 Ampere current. SS304 material with specific thickness was welded using Nikko Steel NSN-308 electrode with 2.6 mm diameter. Tensile test specimens were prepared according to ASTM E8 standard with single V groove joint design (60° angle, 2 mm gap). Tensile testing results showed average Ultimate Tensile Strength (UTS) of 589.35 MPa, and Yield Strength (YS) of 354.48 MPa. Metallographic analysis using optical microscope identified three distinct zones: base metal with uniform polygonal δ-ferrite and γ-austenitee grain structure, Heat Affected Zone (HAZ) with grain enlargement and partial recrystallization, and weld metal with dendritic structure due to cooling. process. The research results indicate that SMAW welding process at 85 Ampere causes significant microstructural changes, where γ-austenitee crystal structure stability and grain size and shape variations become the main factors affecting material mechanical properties.
PENGARUH VARIASI BERAT ROLLER CVT TERHADAP PERFORMA MOTOR INDIRECT INJECTION 125 CC DENGAN BAHAN BAKAR ETANOL 5% : EFFECT OF CVT ROLLER WEIGHT VARIATION ON THE PERFORMANCE OF A 125 CC INDIRECT INJECTION MOTORCYCLE USING 5% ETHANOL FUEL Rahmad Agus Salim; Reonaldo Hartono; Hadi Rahmad; Deny Setiawan
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.8630

Abstract

The performance of automatic motorcycles is influenced by the Continuously Variable Transmission (CVT), particularly the roller component that regulates the transmission ratio. The use of alternative fuels such as 5% ethanol (E5) is also relevant to improve energy efficiency and reduce emissions. This study analyzes the effect of roller weight variation on the power and torque of a 125 cc indirect injection motorcycle fueled with E5. The independent variable is roller weight (12 g, 15 g, 18 g), while the dependent variables are power (HP) and torque, with controlled variables including motorcycle type, fuel, and dynamometer. The experiment was conducted through dynotest and analyzed descriptively. Results show that 12 g rollers provide the best initial acceleration (9.82 HP at 7500 rpm), 15 g rollers are more stable at mid–high rpm (8.57 HP at 8000 rpm), and 18 g rollers produce the highest torque (9.27 Nm at 6000 rpm).
PENGARUH PORTING PADA CYLINDER HEAD MESIN HONDA TYPE KZR 150CC BERBAHAN BAKAR PERTALITE TERHADAP DAYA TORSI : THE EFFECT OF PORTING ON THE CYLINDER HEAD OF A HONDA KZR 150CC ENGINE USING PERTALITE FUEL ON TORQUE POWER Muhammad Fuad Hasyim Ashari Fuad Hasyim; Hadi Rahmad; Deny Setiawan
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.8636

Abstract

As the use of the KZR 150CC motorbike experiences a decrease in the torque power produced, it is necessary to make modifications to increase the torque power. This study is to analyze the effect of porting variations on the cylinder head of the Honda KZR 150CC engine using Pertalite fuel on the torque power produced. Porting modifications are carried out on the intake port channel with a diameter of 24.5 mm, 26.5 mm, and 28.5 mm and the exhaust with a diameter of 20.5 mm, 22.5 mm, 24.5 mm. Engine performance testing is carried out using a dyno test to measure torque values at various engine speeds. The test results show that each porting variation produces different torque characteristics. The standard engine has an advantage at low speeds with a peak torque of 11.66 Nm at 6520 RPM, porting 1 excels at medium speeds with a torque of 11.46 Nm at 7270 RPM, while porting 2 shows the best performance at rotations with a peak torque of 12.32 Nm at 7270 RPM. In terms of horsepower, the standard engine has an advantage at low revs with a peak torque of 10.71 HP at 6520 RPM, porting 1 excels at medium revs with a torque of 11.76 HP at 7270 RPM, while porting 2 shows the best performance at revs with a peak torque of 12.62 HP at 7270 RPM.
STUDI PERBANDINGAN SIFAT MEKANIK BAJA ABRASIVE RESISTANT CAST STEEL (ARCS) DAN SCMNH11 UNTUK APLIKASI HAMMER LIMESTONE CRUSHER : COMPARATIVE STUDY OF MECHANICAL PROPERTIES OF ABRASIVE RESISTANT CAST STEEL (ARCS) AND SCMnH11 FOR HAMMER LIMESTONE CRUSHER APPLICATION franciskus edy prasetiawan; Anggoro Harry Sulistyawan; Nudito Rifqi Himawan
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.9087

Abstract

This study compares two materials, namely Abrasive Resistant Cast Steel (ARCS), a type of abrasion-resistant cast steel designed for industrial applications exposed to severe abrasive conditions, and SCMnH11, a high-manganese steel commonly used for hammer applications in limestone crushers within the cement industry. The research focuses on analyzing mechanical properties such as tensile strength, yield strength, hardness, as well as the chemical composition and microstructure of both materials. The results show that ARCS exhibits superior tensile and yield strength compared to SCMnH11, with respective values of 923 N/mm² and 756 N/mm², while SCMnH11 demonstrates higher elongation (25%) compared to ARCS (9.5%). In terms of hardness, SCMnH11 is harder (30 HRC) than ARCS (25.6 HRC). Chemical analysis indicates that SCMnH11 has a higher manganese content (9.08%) than ARCS (1.32%), contributing to its toughness, whereas ARCS contains more chromium (2.25%), enhancing its wear resistance. Microstructural analysis reveals that ARCS consists of a combination of bainite and ferrite, providing strength and hardness, while the austenitic structure of SCMnH11 enables it to absorb impact more effectively without damage.
ANALISIS UJI PERFORMA AIR CONDITIONER DAIKIN 1 HP MENGGUNAKAN REFRIGERAN R22 DENGAN MEMBANDINGKAN VARIASI BUKAAN KATUP REFRIGERAN 0,25 BUKAAN DAN 1 BUKAAN PADA VARIASI SUHU RUANGAN 18°C - 27°C : PERFORMANCE TEST ANALYSIS OF A 1 HP DAIKIN AIR CONDITIONER USING R22 REFRIGERANT BY COMPARING VARIATIONS IN REFRIGERANT VALVE OPENINGS OF 0,25 AND 1 UNDER VARIATIONS OF ROOM TEMPERATURES FROM 18°C TO 27°C BOBBY BAGAS PRAKOSO
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.9281

Abstract

The vapor compression refrigeration system with Air Conditioner (AC) cooling systems has continued to evolve with the advancement of time. Especially today, AC cooling systems are highly needed by humans in daily life, particularly during hot weather conditions. However, it cannot be denied that many people in Indonesia still use older types of AC units with R22 refrigerant, which is known for its high electricity consumption. To address this issue, this research analyzes the performance test of an AC unit using a Daikin brand AC with a 1HP compressor and R22 refrigerant. The study will analyze the AC's performance by calculating the Coefficient of Performance (COP) under two conditions: the refrigerant valve opened to 0.25 and fully opened, with temperature samples taken from 18°C to 27°C. The data obtained will be used to calculate the COP for each variation, and the best performance for the 1HP Daikin AC will be determined. Based on the research conducted, it was found that the best performance of the 1HP Daikin AC was achieved with the refrigerant valve fully opened at a temperature of 23°C, with a COP of 19.08. The lowest performance was observed with the refrigerant valve fully opened at a temperature of 20°C. When comparing all COP results at various temperatures, the 0.25 valve opening demonstrated better performance than the fully opened valve, with a COP difference of 1.02.
VARIASI ALIRAN GAS PELINDUNG DAN KECEPATAN PENGELASAN MIG PADA PIPA ALUMINIUM 6063 TERHADAP KEKUATAN TARIK DAN CACAT LAS: VARIATIONS OF SHIELDING GAS FLOW RATE AND TRAVEL SPEED ON THE TENSILE STRENGTH AND WELD DEFECTS OF ALUMINUM 6063 PIPES yozep imanuel; Sulistyono; Fauzan Baananto
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.9380

Abstract

The Metal Inert Gas (MIG) welding process is influenced by welding speed and shielding gas flow rate, which play an important role in determining weld joint quality. This study aims to analyze the effect of variations in shielding gas flow rate and welding speed on the tensile strength and weld defects of Aluminum Alloy 6063. The shielding gas flow rates used were 12 l/min, 14 l/min, and 16 l/min, while the welding speeds were varied at 4 mm/s, 5 mm/s, and 6 mm/s. Tensile strength testing was conducted in accordance with ASTM E8/E8M standards. The results indicate that the combination of a welding speed of 4 mm/s and a shielding gas flow rate of 16 L/min produced the highest tensile strength of 125.97 MPa. An increase in welding speed reduced heat input, resulting in decreased penetration and weld joint quality. Furthermore, non-optimal shielding gas flow rates promoted weld defects such as porosity and oxidation, which contributed to a reduction in the tensile strength of the welded joints
OPTIMASI PARAMETER KOMPOSISI KOMPOSIT SERAT KACA - KARBON DENGAN METODE TAGUCHI: OPTIMIZATION OF COMPOSITION PARAMETERS OF GLASS FIBER - CARBON COMPOSITES USING THE TAGUCHI METHOD Dian Pamuji; Eli Novita
Jurnal Teknik Mesin Vol. 5 No. 1 (2026): JURNAL TEKNIK MESIN
Publisher : Program Studi Teknik Mesin PSDKU Polinema Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/j-meeg.v5i1.9725

Abstract

The use of composite materials in electric vehicle body structures has continued to grow due to their high strength-to-weight ratio. However, the optimization of manufacturing parameters to achieve optimal mechanical performance, particularly for honeycomb-based composites, still requires further investigation. This study aims to determine the optimal combination of process parameters that maximizes the tensile strength of honeycomb-based composites for electric vehicle body applications. The parameters investigated include the fabrication method (hand lay-up and vacuum), fiber type (fiberglass, carbon fiber, and hybrid), and number of layers (4, 5, and 6 layers). The experimental design was developed using the Taguchi method with an L18 orthogonal array. The results indicate that the optimal parameter combination was achieved using the vacuum fabrication method, carbon fiber reinforcement, and six layers, resulting in the highest tensile strength of 754.56 MPa. Signal-to-noise (S/N) ratio analysis revealed that fiber type was the most influential factor, followed by the number of layers and fabrication method. Analysis of variance (ANOVA) showed that all investigated parameters had p-values below 0.05, indicating that they significantly affected the tensile strength of the composite

Page 8 of 8 | Total Record : 78

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