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INDONESIA
Jurnal Teknik Mesin
Published by Politeknik Negeri Padang
ISSN : 18298958     EISSN : 26555670     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Teknik Mesin adalah sebuah jurnal peer review yang didedikasikan untuk publikasi hasil penelitian yang berkualitas dalam bidang teknik mesin.
Arjuna Subject : -
Articles 220 Documents
 18   19   20   21   22 
Analisis Kekuatan Sambungan Las Butt joint pada Struktur Logam Baja A36 Menggunakan Simulasi SolidWorks Septiadi Lukmawan; Adri Fato
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1957

Abstract

This research evaluates the mechanical strength of butt joint welds on ASTM A36 steel by comparing outcomes from laboratory testing and numerical simulations using SolidWorks. Physical experiments consisted of tensile and bending tests, while the simulation utilized the Finite Element Method (FEM). The tensile test produced an ultimate tensile strength of 498.4 MPa and a yield strength of 361.4 MPa, whereas the simulation yielded 475 MPa and 250 MPa, respectively. The bending test results indicated that the welded specimens exhibited good ductility without visible surface flaws. Differences between simulation and experimental data were mainly due to the idealized material properties in the software compared to the variability found in real specimens. These findings suggest that SolidWorks-based FEM simulation can serve as an effective preliminary tool for predicting weld joint performance, but physical testing remains necessary to validate and ensure reliability.
Validasi Rancang Bangun Dapur Peleburan dan Pengecoran Logam Aluminium Kapasitas 3 kg Untuk Fasilitas Laboratorium Azis Permana Putra; Adri Fato
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1958

Abstract

Metal casting is one of the oldest manufacturing processes used to produce components with complex shapes. However, in educational settings, the lack of adequate metal casting laboratory facilities often becomes a challenge for practical learning, particularly in terms of capacity, safety, and energy efficiency. This study aims to validate a 3 kg capacity aluminum melting and casting furnace specifically designed to support laboratory practical activities. The validation process involved examining the conformity between the design and the fabricated product, testing the casting results, and evaluating the melting performance. A crucible-type furnace fueled by LPG gas with ceramic fiber insulation was used to retain heat and improve efficiency. The validation method included measuring the dimensions of the main components and comparing them with the design drawings, measuring the cast product volume against the design volume, and conducting performance tests covering melting time, temperature rise, and fuel consumption. The results showed that the furnace met the initial design specifications, produced cast products with volumes close to the design, and demonstrated adequate efficiency and performance. Therefore, this furnace is feasible for use as a learning medium for small-scale metal casting processes in a laboratory setting.
Analisis Perbandingan Sifat Mekanik Pegas Daun Baja SUP9 dan SUP9A Melalui Uji Kekerasan dan Struktur Mikro Destiano Sudigdo; Margono Sugeng
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1959

Abstract

Leaf springs are essential components in heavy vehicle suspension systems, serving to absorb shock loads and maintain vehicle stability. Prolonged service life can cause degradation of mechanical properties, which affects both safety and suspension performance. This study aims to analyze and compare the mechanical properties of used SUP9 and SUP9A steel leaf springs through Micro Vickers hardness testing and microstructural observation in accordance with ASTM E384-17. Samples were taken from a Hino Dutro (SUP9) and a Mitsubishi Canter (SUP9A), then prepared and analyzed using ImageJ software for phase quantification. The results showed that the hardness values of SUP9 (246 HV = 234 HB) and SUP9A (214 HV = 204 HB) were below the JIS G 4801 standard range (363–429 HB). The microstructure of SUP9 consisted of 80% pearlite, 15% ferrite, and <5% martensite, while SUP9A contained 70% pearlite, 25% ferrite, and <5% martensite. The higher pearlite content in SUP9 contributed to greater hardness, whereas the higher ferrite content in SUP9A increased ductility but reduced wear resistance. These findings indicate that both materials have undergone softening due to tempering effects from repeated loading, potentially reducing their ability to withstand shock loads and accelerating fatigue failure. Technical recommendations include re-heat treatment or component replacement to restore suspension performance and improve vehicle operational safety
Uji Performa Penggerak Perahu Dengan Tipe Twin Menggunakan Propeller 3 Blade Alfian; Boy Rollastin; Hasdiansah Hasdiansah
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

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Abstract

This study aims to evaluate the performance of a twin-type boat propulsion system driven by a single 22 HP engine using a 3-blade propeller. Experimental testing was carried out in a water tank to analyze the relationship between engine speed variations and the thrust produced. Power from the engine is transmitted to two propeller shafts through a chain–sprocket mechanism, while thrust measurements were taken using a digital scale and converted into Newton units. The results show a significant increase in thrust as engine speed increases. At 2100 rpm, the propeller generated an average thrust of 36.26 N, which increased to 78.48 N at 4600 rpm. These findings indicate a positive linear relationship between propeller rotational speed and thrust output, demonstrating that the twin-type propulsion system using a 3-blade propeller provides optimal performance for small to medium-sized boats. This research contributes valuable empirical insights for selecting propeller configurations and developing more efficient propulsion systems for fishing vessels in Indonesia.
Analisa Pengaruh Sudut Potong Terhadap Temperatur dan Keausan Pahat Pada Proses Pembubutan Material ST 41 Muhammad Wahyu Ardiansyah; Mochamad Mas’ud
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1977

Abstract

Turning is one of the most widely used machining processes in manufacturing industries, where tool geometry, particularly the cutting angle, significantly influences cutting temperature and tool life. This study was conducted through simulation and experimental turning of ST 41 steel using HSS cutting tools with cutting angle variations of 10°, 12°, and 15°, while other parameters such as cutting speed, depth of cut, and feed rate were kept constant. Cutting temperature was measured using a thermocouple and an infrared thermometer, while tool wear was analyzed using an optical microscope following ISO 3685 standards. The data were analyzed descriptively and statistically to determine the effect of cutting angle variations on cutting temperature and tool wear.The results showed that a larger cutting angle (15°) produced the highest average cutting temperature of 477.77 °C and the most severe tool wear. A smaller cutting angle (10°) resulted in the lowest initial temperature of 355.8 °C but exhibited a sharp increase, reaching an average of 420.47 °C, along with relatively high wear. The most favorable condition was obtained at a cutting angle of 12°, which produced the lowest average temperature of 419.33 °C and the most stable and minimal tool wear.Variation in cutting angle significantly affects cutting temperature and tool wear, with a cutting angle of 12° proven to be the most optimal in maintaining thermal stability and extending tool life during the turning process of ST 41 steel.
Rancang Bangun Multi Archimedes Screw Turbine Parallel Muhammad Fahsyah Alfathir; Muhammad Subhan; Hasdiansah
Jurnal Teknik Mesin Vol. 19 No. 1 (2026): Jurnal Teknik Mesin (In Press)
Publisher : Politeknik Negeri Padang

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Abstract

As an environmentally friendly application of renewable energy, pico-hydro power plants are a prime option, especially for remote areas with sufficient water flow. However, the effectiveness of pico-hydro power remains a matter of debate, particularly regarding the angle and rpm required to generate sufficient electrical power. The method is carried out by designing and building a multi-Archimedes screw turbine prototype that applies a transmission system to improve the performance of the turbine rotation in parallel. The test results show that the 45-degree turbine tilt angle configuration produces a turbine rotation of 97 rpm, which indicates optimal efficiency in utili
Hand Training Bagi Penderita Stroke Menggunakan 3D Printing Hasdiansah; Yogi ilyasyah; Zaldy S. Suzen
Jurnal Teknik Mesin Vol. 19 No. 1 (2026): Jurnal Teknik Mesin (In Press)
Publisher : Politeknik Negeri Padang

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Abstract

Stroke is one of the leading causes of disability in Indonesia, often affecting motor functions, particularly in thehands. Rehabilitation plays a crucial role in restoring these functions. This study aims to design and develop a hand training device for stroke patients using 3D printing technology and a soft pneumatic actuator system. The process began with CAD-based design, followed by fabrication using Fused Deposition Modeling (FDM) 3D printing with TPU material, and final assembly of all components. Testing results showed that the device could effectively perform finger flexion movements at air pressures ranging from 0.49 MPa, and was capable of gripping objects such as a spiked ball. This device offers an affordable, customizable, and flexible rehabilitation solution to assist stroke patients in regaining hand motor function.
Perancangan Prototype Lantai Piezoelectric sebagai Penghasil Energi Listrik Ferro Aji; Yuthi Ar Razi; Anisa Fadilah; Roni Hajianto; Hernawan Novianto
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

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Abstract

The increasing demand for electricity has driven the development of environmentally friendly and sustainable alternative energy sources. Piezoelectric technology offers an innovative solution by converting mechanical energy, such as human foot pressure, into electrical energy. However, most previous studies have focused only on individual material testing, not the integration of a functional floor system with optimal circuit configuration. This study aims to design and test a small-scale piezoelectric floor prototype capable of harvesting energy from pedestrian activity. The prototype utilizes PZT ceramic sensors (27 mm) and was tested using parallel and series circuit configurations. The results show that the prototype can generate an actual voltage of 83.65 V (parallel) and 174.7 V (series) from a total of 5000 footsteps over five months. Although the actual voltage is lower than the ideal due to energy losses and pressure inconsistencies, the system remains functional for low-power applications such as LED lighting or IoT sensors. These findings demonstrate the potential of implementing piezoelectric floor systems in public areas as an efficient, eco-friendly, small-scale renewable energy solution that supports smart building concepts.
Pengaruh Variasi Ukuran Partikel Arang Terhadap Laju Pembakaran Dan Stabilitas Nyala Briket Biomassa Pohon Pinang Andrey Mirino; Jusuf Haurissa; Marthina Mini
Jurnal Teknik Mesin Vol. 19 No. 1 (2026): Jurnal Teknik Mesin (In Press)
Publisher : Politeknik Negeri Padang

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Abstract

This study aims to analyze the effect of mesh size variation in areca palm stem charcoal briquette mixtures to determine the optimal formulation for briquette production. The production process began with carbonization of areca palm stems at 550°C, followed by grinding the resulting charcoal and sieving it using mesh sizes 60 and 80. The charcoal was then mixed with tapioca starch as a binder at a composition of 80% charcoal and 20% tapioca, with the addition of 800 ml of hot water, before being molded and pressed into cube-shaped briquettes. The molded briquettes were dried beforehand to reduce moisture content prior to moisture content and burning rate testing. The research was conducted through laboratory experiments comparing two particle size variations, namely Mesh 60 and Mesh 80, using a material composition consisting of 800 grams of areca palm stem charcoal and 200 grams of tapioca starch, mixed with 800 ml of water under a compression pressure of 100 kgf/cm². Mesh size was treated as the independent variable, while burning rate (represented through thermal conduction heat transfer) served as the dependent variable, with compression pressure and briquette dimensions (3 cm cube) controlled as constant variables. The results showed that the Mesh 80 briquette exhibited the best combustion performance, marked by a maximum ignition temperature of 660.1°C and a burning duration of 2 hours, 40 minutes, and 48 seconds.
Pembuatan Biobriket dari Limbah Nilam dan Sekam Padi dengan Variasi Perekat Sagu Reynaldi Pontoh; Silvy Dollorossa Boedi; Tineke Saroinsong
Jurnal Teknik Mesin Vol. 19 No. 1 (2026): Jurnal Teknik Mesin (In Press)
Publisher : Politeknik Negeri Padang

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Abstract

The increasing global energy demand and the depletion of fossil fuel reserves have driven the search for renewable energy alternatives. Biomass-based biobriquettes offer a promising solution, particularly through the utilization of agricultural waste. This study aims to analyze the effect of sago binder variations (5%, 8%, 10%, 12%, and 14%) on the quality of biobriquettes made from a 50:50 mixture of nilam distillation waste and rice husk. Quality parameters tested include moisture content, ash content, volatile matter, and combustion rate, referring to SNI 01-6235-2000 standards. The results showed that increasing sago binder content from 5% to 14% caused an increase in moisture content (7.84% to 8.86%) and volatile matter (29.04% to 36.87%), while ash content decreased significantly (44.46% to 31.85%). The 12% binder variation produced the lowest combustion rate (0.089 g/min) with the highest durability. The 14% variation achieved the highest combustion temperature (469.0°C). All variations met SNI moisture content standards (<8%) except the 14% variation. The 12% sago binder composition is recommended as the optimal formulation for producing biobriquettes with balanced quality characteristics.

Page 22 of 22 | Total Record : 220

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