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INDONESIA
Jurnal Teknik Mesin Indonesia
Published by Badan Kerja Sama Teknik Mesin
ISSN : 1907350X     EISSN : 25977563     DOI : -
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknik Mesin Indonesia “JTMI” " adalah jurnal ilmiah sains dan teknologi yang diterbitkan oleh Badan Kerjasama Teknik Mesin Indonesia. JTMI meliputi bidang konversi energi, material, desain mekanikal, manufaktur dan otomasi
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 9 Documents
 1 
Search results for , issue "Vol 21 No 1 (2026): April" : 9 Documents clear
Rancang bangun pembuatan mesin cetak pelet pakan ternak Ardiansyah, Ahmad Rehan; Widodo, Edi; Mulyadi
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026104

Abstract

A livestock feed pellet machine is a device designed to improve the efficiency of animal feed production processes. Manual feed production generally requires a longer processing time and often produces pellets with non-uniform sizes. This study aims to design and develop a livestock feed pellet machine with a production capacity of 20 kg/h, focusing on the structural design of the machine frame and screw extruder as the primary components in the pellet-forming process. The research methodology includes field observation, literature review, and a design process based on the VDI 2222 design method. The design process was carried out using SolidWorks software, involving the selection of main components such as an AC electric motor, a pulley and V-belt transmission system, a hopper, a machine frame, and a screw extruder. Structural strength analysis was conducted using the Finite Element Analysis (FEA) method through SolidWorks Simulation under a static load of 150 kg to evaluate the distribution of stress, strain, displacement, and safety factor. The simulation results show that the maximum stress on the machine frame is 72.6 MPa, with a maximum displacement of 9.516 mm and a minimum safety factor of 1.689, indicating that the stress value is still below the material yield strength and the frame structure is considered safe. Meanwhile, the screw extruder component experiences a maximum stress of 6.14 × 10⁴ N/m², a maximum displacement of 8.313 × 10⁻⁶ mm, and a maximum strain of 1.804 × 10⁻⁷, indicating that the resulting deformation is very small and remains within the elastic limit of the material. Based on the design and structural analysis results, the developed livestock feed pellet machine has a safe and stable structural design and is capable of improving the efficiency of feed production. This machine is expected to serve as an alternative solution for farmers to independently produce livestock feed at a more economical cost.
Pengembangan proses manufaktur tempa dingin untuk  paku ladam kuda Bagdja, Ade; Santoso, Gatot; Hartono, Rachmad; Lazuardi, Dedi; Nurfajar, Farid Budi; Muhammad, Adi; Wijaya, Ahmad; Fadillah, Muhammad Andre; Radiansyah, Arnold Muhammad; Alfriagi, Sandi; Hidayatullah, Rahmat; Ariffalah, Fajar
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026107

Abstract

Peminat Cabang olahraga Pacuan Kuda semakin meningkat di Indonesia. Perlengkapan yang digunakan oleh kuda salah satunya adalah Paku Ladam Kuda. Paku Ladam Kuda digunakan untuk menempelkan ladam pada kuku kuda seperti sepatu pada manusia. Paku Kuda ini masih diimpor. Permasalahan utama adalah teknologi yang dikuasai para Pandai Besi tradisionil, sehingga kualitas produk paku ladam kuda nya kurang konsisten. Untuk menjawab kebutuhan ini, dirancang rangkaian penelitian untuk mengembangkan proses manufaktur tempa dingin paku ladan kuda  yang dapat diimplementasikan oleh para Pandai Besi di Indonesia. Pada Penelitian ini dikembangkan satu set peralatan produksi untuk membuat paku ladam kuda yang terdiri dari satu (1) Drop Hammer serta enam (6) set pasangan cetakannya. Dari enam (6) set cetakan, terdiri dari satu (1) cetakan upsetting, dua (2) cetakan trimming dan empat (4) cetakan tempa dingin. Material cetakan menggunakan Baja S45C serta untuk paku ladam kuda menggunakan kawat timah Pb. Pengujian dilakukan pada 200 spes.imen awal untuk proses tempa I, tempa II, dan tempa III menghasilkan keberhasilan proses tempa sebesar 90%.
Rancang bangun prototype pnuematik untuk pengecekan tebal material Adin; Saputra, Alfian
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026108

Abstract

Materials are crucial raw materials in the industrial world, both in terms of capacity, for both large and small industries. Over time, and with increasing competition, inspections are inextricably linked. Inspections require tools to simplify and increase measurement accuracy during operator operations. Automated systems utilizing pneumatics for inspection are increasingly used in the industrial world because they utilize readily available air. Tool design requires analysis, planning, and calculations of the required main components. The results of the planning process determine the pneumatic size based on the maximum load force and air pressure used, and can then determine the compressor power. In addition, pneumatic systems can be combined with conveyor systems, where the main conveyor design includes motor power, belt type, and roller shaft size, along with calculations for torque, speed, torsional moment, and bending moment.
Peningkatan efisiensi mesin wirecut melalui condition-based maintenance berbasis data multisensor Abdurrahman, Salman
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026111

Abstract

This study aims to analyze the effect of machining parameter variations on the performance and stability of the Computer Numerical Control (CNC) Wire Electrical Discharge Machining (WEDM) process and to develop a multisensor-based Condition-Based Maintenance (CBM) approach. The research employs an experimental method by varying current, voltage, and wire speed, while monitoring machine conditions in real time using vibration and dielectric fluid temperature sensors. The collected data were analyzed using statistical and trend-based approaches to identify the relationship between machining parameters and machine condition indicators. The results show that increasing current and voltage combined with decreasing wire speed leads to higher discharge energy, resulting in increased vibration and temperature, as well as a significant reduction in wire break time from 60 minutes to 6 minutes. A critical transition is observed between the third and fourth parameter variations. Based on these findings, machine conditions are classified into three categories: normal, warning, and critical. The novelty of this study lies in the integration of machining parameters and multisensor data to establish a condition classification framework for early detection of wire break in WEDM processes. This study concludes that vibration and dielectric fluid temperature are reliable indicators for detecting machine degradation, and that the multisensor approach improves monitoring accuracy and supports the implementation of predictive maintenance to enhance reliability and operational efficiency in manufacturing processes.
The Influence of the crown and ring land piston dimensions on the performance of the Honda Supra X 125 motorcycle engine Randi Febrian, Muhamad; Boni, Boni sena; Siswadi, Siswadi; Edlyn, Edlyn Farid Simanjuntak; Alwi, Alwi Azwar Anas
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026112

Abstract

This study aims to analyze the influence of piston crown and ring land dimensions on the performance of a 125 cc engine with a bore of 52.40 mm and a stroke of 57.90 mm. The research scope includes geometric dimension calculations, three-dimensional modeling using SolidWorks, and theoretical engine performance evaluation. The method employed empirical piston design ratios and performance analysis using a Brake Mean Effective Pressure (BMEP) of 900 kPa at 8,000 rpm. The results indicate a cylinder volume of 124.95 cc with piston dimensions consisting of a 4.78 mm crown thickness, 2.62 mm ring land height, 3.14 mm oil ring groove width, 36.68 mm skirt length, and 13.10 mm piston pin diameter. Performance analysis yielded a power output of 6.67 kW (8.94 HP), torque of 7.96 Nm, theoretical thermal efficiency of 59.2%, and an estimated BSFC of 75.7 g/kWh. Overall, the designed piston dimensions are consistent with the characteristics of a 125 cc four-stroke SOHC engine and approach the actual performance of the Honda Supra X 125 engine.
Field-scale evaluation of a solar-powered double-nozzle venturi aeration system for water quality management in tilapia cage culture Thoharudin; Sunardi; Yudha, Fitroh A.K.; Nadjib, Muhammad; Pudjianto, Aqiel Z. A.
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026114

Abstract

Freshwater aquaculture requires efficient and affordable aeration to maintain water quality, especially in stagnant or low-circulation waters where dissolved oxygen (DO) depletion can reduce fish survival and productivity. This study evaluated the field-scale performance of a solar-powered double-nozzle Venturi bubble generator for nighttime aeration in a large tilapia floating cage. The system was installed in an 11 m × 17 m cage containing about 6000 tilapia and used eight double-nozzle Venturi aerators driven by a 12 V DC pump with an off-grid photovoltaic-battery supply. It operated intermittently from 00:30 to 08:30 using a 30 min ON/30 min OFF cycle, equivalent to 4 h day⁻¹ of effective operation. Each unit produced an average water flow of 6.73 L min⁻¹ and air entrainment of 1.12 L min⁻¹, while the pump consumed 63.12 W. A minimum battery capacity of 449.28 Ah was required and met by a 500 Ah battery bank, while the photovoltaic system was adequately sized for local solar conditions. Field results showed stable pH (6.7–7.3), while DO became the main limiting factor. Aerated water maintained 4.5 mg L⁻¹ DO compared with 3.8 mg L⁻¹ in non-aerated water, confirming the system’s feasibility and effectiveness for off-grid tilapia cage culture.
Analisis life cycle assessment (LCA) produksi biobriket dari bonggol jagung dengan perekat tapioka Harmiansyah; Meidaliyantisyah; Ferlin, Fachrina Edriyanti; Hasbi, Hafiz; Nabila, Innez; Fazira, Angel Era
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026126

Abstract

Energi terbarukan menjadi salah satu inovasi yang efektif untuk mengatasi keterbatasan energi yang bersumber dari fosil seperti batu bara. Energi biomassa dengan memanfaatkan limbah seperti bonggol jagung menjadi biobriket telah banyak dikembangkan untuk memenuhi kebutuhan energi oleh konsumen, namun diperlukan kajian yang komprehensif untuk menganalisis dampak lingkungan pada proses produksi biobriket. Oleh karena itu tujuan penelitian ini adalah menganalisis dampak lingkungan pada proses produksi biobriket bonggol jagung dengan perekat tapioka. Metodologi penelitian ini terdiri dari 4 langkah meliputi: definisi tujuan dan ruang lingkup, analisis inventori, analisis dampak lingkungan, dan interpretasi data. Penelitian ini menggunakan 3 impact kategori yaitu marine aquatic ecotoxity, abiotic depletion, dan global warming serta aplikasi openLCA digunakan untuk simulasi analisis dampak lingkungan. Hasil LCA menunjukkan bahwa tahap karbonisasi, terutama penggunaan diesel, berkontribusi signifikan terhadap emisi. Oleh karena itu, perbaikan direkomendasikan, seperti penggantian bahan bakar diesel dengan alternatif yang ramah lingkungan, peningkatan efisiensi energi, dan eksplorasi metode karbonisasi berkelanjutan. Metode LCA digunakan untuk memberikan pandangan komprehensif terkait keberlanjutan biobriket, dengan tujuan memberikan pemahaman mendalam tentang efisiensi dan dampak lingkungan. Implementasi perbaikan diharapkan dapat mengurangi dampak lingkungan dan meningkatkan keberlanjutan produk.
Pengaruh variasi rasio kompresi terhadap performa dan emisi mesin bensin 110 cc Hardianto, Resa; Syaiful Arif
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026128

Abstract

Modifikasi geometri ruang bakar untuk merekayasa rasio kompresi merupakan pendekatan teknis dalam upaya optimalisasi efisiensi termal pada motor bakar pembakaran dalam (Internal Combustion Engine). Penelitian ini menyajikan analisis mengenai pengaruh variasi rasio kompresi terhadap karakteristik performa (torsi dan daya) serta emisi gas buang pada mesin bensin satu silinder berkapasitas 110 cc dengan sistem pengabutan karburator. Pendekatan eksperimental kuantitatif dilakukan dengan menguji tiga konfigurasi rasio kompresi: 8,9:1 (penurunan rasio/dekompresi), 9,3:1 (spesifikasi standar pabrikan), dan 9,7:1 (peningkatan rasio kompresi). Evaluasi performa mekanis diukur menggunakan instrumen chassis dynamometer, sementara konsentrasi polutan gas buang dianalisis menggunakan five-gas analyzer dengan mengacu pada metode keseimbangan atom karbon (Carbon Balance Method). Hasil pengujian menunjukkan bahwa penerapan rasio kompresi 9,7:1 menghasilkan luaran performa tertinggi, mencatatkan daya puncak sebesar 2,618 kW pada putaran mesin 6500 RPM (peningkatan sebesar 1,87% dari standar) dan torsi maksimum sebesar 8,22 Nm pada putaran 5750 RPM (peningkatan sebesar 7,12%). Sebaliknya, penurunan kompresi ke rasio 8,9:1 berdampak pada penurunan daya puncak menjadi 2,202 kW. Meskipun peningkatan rasio kompresi terbukti mampu menaikkan efisiensi volumetrik dan memicu peningkatan performa mekanis, modifikasi tersebut menghasilkan efek termodinamika sekunder berupa anomali pembakaran. Peningkatan tekanan mempersempit area sisa (clearance volume), yang memicu peningkatan efek wall quenching dan menjebak molekul bahan bakar pada crevice volume. Kondisi ini, diiringi dengan sifat bahan bakar uji, menyebabkan peningkatan emisi Hidrokarbon (HC) hingga mencapai 300 ppm. Analisis ini menyimpulkan bahwa peningkatan performa mekanis melalui modifikasi rasio kompresi pada mesin berkapasitas kecil mensyaratkan penyesuaian stoikiometri dan spesifikasi bahan bakar yang presisi guna menekan pembentukan emisi polutan.
Pengaruh waktu pelapisan back oxide terhadap ketahanan korosi dan sifat mekanik pada baja AISI 4340 Arifin, Devi Eka Septiyani; Alda Diva Meidina
Jurnal Teknik Mesin Indonesia Vol 21 No 1 (2026): April
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jtmi2112026129

Abstract

Blackening, also known as Black Oxide coating, is a conversion coating method that forms a black oxide layer on the surface of steel used in industry to enhance corrosion resistance, aesthetics, and mechanical properties. This study aims to determine the effect of coating times (blackening) of 10 minutes, 30 minutes, and 60 minutes at a temperature of 140 °C on the corrosion resistance, tensile strength, and coating thickness of AISI 4340 steel. The results showed that the variations succeeded in forming a uniform black layer that adhered well to the surface, while good corrosion resistance was obtained at 30 minutes. The thickness of the layer formed was directly proportional to the coating time, increasing from 13.06 µm at 10 minutes to 18.55 µm at 60 minutes. In contrast, the tensile strength showed a different trend of results at 10 minutes, reaching the highest tensile strength of 1684 MPa; however, the tensile strength decreased at 30 minutes and 60 minutes. This decrease in tensile strength value was due to the number of hydrogen atoms formed during the dehydrogenation process. These atoms diffuse and become more entrapped in the steel's atomic structure with longer plating times. This difference in duration results in the dehydrogenation process having different rates of complete removal of trapped hydrogen atoms at each time interval, resulting in a decrease in tensile strength.

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