cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Eswanto
Contact Email
irajtma@irapublishing.com
Phone
+62895321333935
Journal Mail Official
irajtma@irapublishing.com
Editorial Address
Perum Graha Garuda Mas Blok II No. 39 Dusun V Desa Sigara-Gara Kecamatan Patumbak Kabupaten Deli Serdang Provinsi Sumatera Utara, Indonesia, Kode Pos: 20361.
Location
Kab. deli serdang,
Sumatera utara
INDONESIA
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Published by CV. IRA PUBLISHING
ISSN : -     EISSN : 29624290     DOI : https://doi.org/10.56862/irajtma
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) fokus pada artikel ilmiah hasil penelitian dan review dalam bidang teknik mesin dan aplikasinya yang antara lain meliputi: 1. Konversi energi 2. Mekanika 3. Material 4. Manufaktur 5. Lain-lain yang relevan
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 25 Documents
 1   2   3 
Search results for , issue "Vol 5 No 1 (2026): April" : 25 Documents clear
Penelitian Perubahan Kinerja Mesin dan Karakteristik Emisi pada Remapping ECU pada Sistem Mesin 150cc Empat Tak dengan Satu Poros Nocken Atas Wicaksono, Dodo; Muhammad, Alief; Fathuddin Noor, Muhammad; Dewi, Indah Noor Dwi Kusuma; Helsinky, Mava Nurhaliza; Prasetiyo, Dani Hari Tunggal; Achmadin, Wahyu Nur 
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.374

Abstract

This study evaluates the effects of ECU remapping, ignition system adjustments, and air-fuel ratio (AFR) modifications on engine performance and emission characteristics. Tests were conducted over engine speeds ranging from 4000 to 9000 RPM with different configurations: ECU, ignition system, and AFR adjustments. Results indicate that AFR remapping combined with fuel system tuning enhances torque and power at mid-range RPM, reaching a maximum torque of 12.98 N·m and power of 12.25 HP. ECU and ignition modifications increased CO and HC emissions, whereas AFR optimization through the fuel system reduced CO and improved Lambda toward stoichiometric balance. These findings highlight the importance of balancing performance improvement with emission control.
Pengaruh Parameter Sintering terhadap Stabilitas Fasa dan Struktur Mikro pada Komposit Titanium-Hidroksiapatit dengan Teknologi Serbuk: Review Harwijayanti, Widyanita; Hidayat, Tubagus Adytia Syarief
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.380

Abstract

The increasing demand for orthopedic implants has driven the development of metals as biomedical materials. However, metals exhibit limited bioactivity, necessitating modifications to enhance their biological integration. One widely developed method is the fabrication of Titanium-Hydroxyapatite (Ti-HA) composites via powder metallurgy, utilizing hydroxyapatite for its similarity to human bone composition. This review analyzes 16 articles from Scopus and Google Scholar (2005-2023) based on material types, powder metallurgy parameters, and the physicochemical characterization of Ti-HA composites. The powder metallurgy process involves mixing, compaction, and sintering, during which the final properties are significantly influenced by the atmosphere, temperature, and holding time. A critical challenge is thermal stability, as hydroxyapatite decomposes above 800°C and titanium undergoes crystalline structural transformation beyond 882.5°C. During sintering, interparticle bonding and diffusion processes occur, triggering new phase formations and alterations in surface morphology. This process results in a final Ti-HA composite composition consisting of Titanium (Ti), Calcium (Ca), Phosphorus (P), and Oxygen (O). This study underscores the importance of precise control of temperature parameters to maintain material integrity during fabrication.
Penerapan Teknologi Oven Pengering Cat Tipe Tertutup Dengan Isolator Aluminium Foil Pada UMKM Bengkel Otomotif Parenden, Daniel; Mangera, Paulus; Cipto, Cipto
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.384

Abstract

Paint drying in small automotive repair workshops is commonly performed at ambient conditions, resulting in long waiting times and inconsistent film formation, especially for waterborne coatings. This limits daily throughput and repeatability. This study designs and evaluates a simple low-temperature (30-40°C) closed drying oven for paint specimens with a 0.60 m3 chamber (1.2 x 1.0 x 0.5 m), a 200 W electric heater, and on-off thermostat control. An internal aluminum-foil radiant barrier is applied to reduce wall heat losses. Thermal performance is assessed using analytical heat-loss estimation and warm-up tests to a 40°C setpoint. The predicted wall heat loss decreases from 648 W (without foil) to about 97 W (with foil), yielding an effective heating power of roughly 103 W. Experiments show the oven reaches 40°C within 4-6 min and maintains the setpoint with stable cycling. Thermal efficiency improves from 31% to 85%, indicating a low-cost, energy-saving solution for practical specimen drying in SMEs.
Pengaruh Variasi Kemiringan Front Wall Dan Perioda Gelombang Air Laut Terhadap Daya Udara Yang Dihasilkan Dan Efisiensi Pada Model Oscillating Water Column (Owc) Pembangkit Tenaga Gelombang Peldiansah Ismael , Alif Rahman; Supardi, Nurul Iman; Puspawan, Angky; Witanto, Yovan; Alqap, ASF
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.391

Abstract

Ocean wave energy is a renewable resource with significant potential for development in Indonesia, given its vast coastal areas. One technology for converting wave energy into usable power is the Oscillating Water Column (OWC) system. This system utilizes the vertical motion of seawater inside a chamber to generate airflow, which then drives a turbine to produce energy. This study aims to analyze the effect of oscillating column tilt angle and wave period variations on the energy conversion efficiency of an OWC model, and to determine the optimal tilt angle for maximum efficiency in converting wave power into air power. The research was conducted experimentally using a laboratory-scale OWC model measuring 1500 mm in length, 300 mm in width, and 500 mm in height. The oscillating column tilt angles tested were 0°, 35°, 40°, and 45°. Artificial waves were generated using a motor drive at 30 rpm, 40 rpm, and 50 rpm, producing wave periods of 2.1 seconds, 1.6 seconds, and 1.2 seconds, respectively. Measured parameters included air velocity, motor speed, wave period, wavelength, and wave height. Calculations determined wave power, air power, and system efficiency. Results show tilt angle and wave period significantly affect OWC efficiency, with the highest efficiency reaching 41.00% at 40° tilt and 1.6-second waves.
Dampak Rasio Pencampuran Bahan Bakar Diesel Terhadap Opasitas Asap Knalpot Mitsubishi L300 Tahun 2013 Wandani, Markus; Suprapto, Suprapto; Iskandar, Henry; Basuki, Nur; Jubaidah, Jubaidah
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.393

Abstract

High exhaust gas opacity in conventional Diesel vehicles, such as the 2013 Mitsubishi L300 with its conventional injection system, remains a significant environmental challenge. This study aims to analyze the impact of blending three Diesel fuel types—Biosolar, Dexlite, and Pertamina Dex—on exhaust opacity levels. Conducted at the Motor Vehicle Testing Unit in Medan, the research employed an experimental method using a Smoke Opacity Meter to measure smoke opacity at various fuel mixture ratios. Data were subsequently analyzed using ANOVA to identify significant differences between treatments. The results demonstrate that fuel blending significantly influences opacity values. Notably, the combination of Pertamina Dex and Dexlite yielded the lowest opacity levels, achieving an average reduction of over 30% compared to pure Biosolar. This improvement is attributed to higher cetane numbers and lower sulfur content, which facilitate more complete combustion. The study concludes that fuel blending is a practical strategy for mitigating emissions in conventional Diesel engines, supporting the development of eco-friendly fuels and sustainable transportation policies in Indonesia.
Analisis Kinerja Kincir Air Overshot dengan Penambahan Lubang pada Sudu Susanto, Adam; Buku, Atus; Siahaya, Yusuf
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.396

Abstract

This study aims to analyze the performance of an overshot water wheel with holes added to the blades, focusing on mechanical power, torque, and efficiency. The experiment was conducted using a laboratory-scale water wheel prototype with a fixed number of eight blades. The experimental variations included the number of holes in each blade (12, 16, and 20) and hole diameters (0.07 m, 0.09 m, and 0.11m), with a blade without holes used as a reference condition. The tests were carried out under relatively constant water flow conditions, with shaft rotational speed measured using a tachometer and torque obtained via a braking method. The results indicate that adding holes to the blades significantly improves the performance of the overshot water wheel. The optimal configuration was achieved with 20 holes and a hole diameter of 0.11 m, producing a maximum power of approximately 21 W, the highest torque, and a maximum efficiency of 7.9%. This study demonstrates that optimizing blade design by adding holes is an effective approach to enhancing the performance of overshot water wheels in small-scale microhydropower applications.  
Mekanisme Kendali Hibrida Berbasis Internet of Things untuk Mitigasi Kekeruhan pada Kolam Lele (Clarias gariepinus) secara Intensif Eka Permana, Aldyan; Malik, Muchamad; Jannah, Wardatul
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.397

Abstract

Intensification of catfish farming at high stocking density is often constrained by drastic water-quality degradation, including increased turbidity, which can trigger stress and mass mortality in commodities. This study aims to design and build an Internet of Things-based automatic catfish pond water turbidity control system to maintain water parameter stability according to quality standards in real-time. The research method applied is Research and Development, which includes microcontroller-based hardware design, optical turbidity sensor integration, and web-based monitoring interface development. The system uses an on-off control algorithm with a hysteresis technique to intelligently regulate the circulation pump's activation at a danger threshold of 50 Nephelometric Turbidity Units and a safe limit of 25 Nephelometric Turbidity Units. The main findings indicate that the system has a very fast dynamic response, with a sensor delay of less than 2 seconds. In maximum disturbance load testing, the device successfully restored water clarity in an average time of 165 seconds without actuator oscillation. This study concludes that integrating automatic control technology and remote monitoring effectively improves water quality management efficiency and mitigates the risk of harvest failure for farmers.
Investigasi Experimental Jumlah Sudu Dan Kecepatan Angin Terhadap Performa Turbin Savonius Tipe S Sugiono, Didik; Mahardika, Shultoni; Lostari, Aini; Riani, Novi Indah; Kulsum, Umi; Pamungkas, Baharuddin Putra
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.399

Abstract

Wind energy is a potential renewable energy source in Indonesia, but the relatively low wind speed requires efficient turbine technology. The Savonius turbine has become an alternative choice for generating electrical energy. This research aims to determine the performance of the Savonius type-S turbine with blade numbers of 3, 5, and 7 at different wind speeds. The method used was an experiment conducted in a laboratory-scale wind tunnel simulator, with testing conducted across three blade configurations at wind speeds of 6, 7, and 8 m/s. The research results show that the 3-blade turbine achieves optimal torque at all wind speeds, with a maximum of 0.24 Nm at 8 m/s. The maximum wind power is obtained with the 7-blade turbine, reaching 167 watts at 8 m/s. The optimal turbine power also occurs with the 3-blade configuration, with the highest value being 10.30 watts at 8 m/s. The highest turbine efficiency is achieved by the 7-blade turbine, which is 31.85% at 8 m/s. Based on these results, it is concluded that the number of blades affects the performance characteristics of the Savonius type-S turbine. The 3-blade configuration produces the best torque and turbine power, while the 7-blade configuration excels in wind power and efficiency.
Analisis Pengaruh Parameter Welding SMAW Penggabungan Perbedaan Material SA-36 dan SA-240 Gr. 304 pada Pengelasan Fillet Abdillah, Nonov; Aulia Nanda, Rizki; Amir, Amir; Khoirudin, Khoirudin
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.400

Abstract

In the manufacturing and construction industries, welding is the most common method of joining metals. This study aims to optimize SMAW parameters (welding current and travel speed) for joining dissimilar materials—SA-36 and SA-240 Gr.304—in fillet welds. Steel and stainless steel plates were welded using the SMAW process with DCEP polarity. The joints were made using a 90° fillet weld. Welding currents of 100 A and 110 A were used, with E-309 SFA-5.4 welding wire of 3.2 mm diameter. Macroscopic testing was performed on the cross-section of the specimens. Hardness testing was conducted using a Vickers hardness tester on the base metal, Heat Affected Zone (HAZ), and the weld zone. Specimen N4 exhibited the highest penetration at 110 A and a travel speed of 2 mm/s. Specimen N1 had the smallest HAZ width at 100 A and a travel speed of 2.4 mm/s. The visual parameters of specimen N2 were generally optimal as they minimized welding defects. It was concluded that specimen N2 was the most optimal for macro and hardness tests, with a 110 A setting and a high travel speed.
Analisis Unsur Abu Cangkang Kelapa Sawit Hasil Pirolisis Menggunakan X-Ray Fluorescence (XRF) Pangaribuan, Natalia; Mahyunis, Mahyunis
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.404

Abstract

The palm oil industry generates substantial amounts of solid waste in the form of palm kernel shells, which are not optimally utilized. This study aims to analyze the effects of pyrolysis temperature and time on the elemental composition of Tenera variety oil palm shell ash using X-ray fluorescence (XRF) analysis. The study used a two-factor randomized block design with temperature (400°C, 450°C, 500°C) and time (4, 5, 6 hours) as factors. The results showed that increasing temperature and time decreased the solids yield from 76% to 54% and increased the ash content. The highest silica content was obtained at 500°C, 43.35%. This study confirms the potential of oil palm shell ash as an alternative silica source for construction material applications.

Page 1 of 3 | Total Record : 25

 1   2   3 

Filter by Year

2026 2026


Reset
Filter By Issues
All Issue Vol 5 No 1 (2026): April Vol 4 No 3 (2025): Desember Vol 4 No 2 (2025): Agustus Vol 4 No 1 (2025): April Vol 3 No 3 (2024): Desember Vol 3 No 2 (2024): Agustus Vol 3 No 1 (2024): April Vol 2 No 3 (2023): Desember Vol 2 No 2 (2023): Agustus Vol 2 No 1 (2023): April Vol 1 No 3 (2022): Desember Vol 1 No 2 (2022): Agustus Vol 1 No 1 (2022): April More Issue