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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 291 Documents
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Kekuatan pergelangan kaki prostetik pergelangan kaki dengan bahan baja dan aluminium Handoko, Handoko; Dwi Setyana, Lilik; Basuki, Budi; Hari Priambodo, Bambang; Isyroudin, M. Habib; Kurniawan, Yani
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.812

Abstract

Leg prosthetics as a device to increase the mobility of people with disabilities need to be supported in their development, especially in terms of comfort. Modifications to make prosthetics more comfortable to use are by utilizing the elastic properties of springs and base plate materials and dampers. This study analyzes the strength of steel and aluminium prosthetic base components in bearing the dynamic load of user's body. The analysis uses computational techniques with the finite element method. Computational results show that the most critical part of prosthetic, i.e. the base, is safe with maximum working stresses of 31,56 MPa for steel and 44,03 MPa for aluminium. Both materials are able to withstand the working stress.
Analisis Kekuatan Desain Velg Kendaraan Ringan Menggunakan Metode Elemen Hingga: Pendekatan Inovatif untuk Keamanan dan Efisiensi Putra, Agus Dwi; Diama Rizky Septiawan; Muhammad Arif Nur Huda; Dewi Izzatus Tsamroh; Bella Cornelia Tjiptady
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.816

Abstract

Car wheels are critical components responsible for bearing vehicle loads and ensuring stability during driving. This study aims to analyze the strength of car wheels using the Finite Element Method (FEM) with Solidworks 2020 software. The analyzed parameters include von mises stress, equivalent strain, displacement, and safety factor. Simulation results show a maximum stress of 1.978 × 10⁵ N/m² and a maximum strain of 2.449 × 10⁻⁶, within the safe limits of aluminum alloy material. A maximum displacement of 5.687 × 10⁻⁴ mm indicates sufficient structural stiffness of the wheel. The minimum factor of safety, 1.087 × 10³, suggests a high tolerance against failure. This study confirms that the wheel design is safe, efficient, and meets safety standards. The finite element method effectively identifies critical areas and optimizes the design before production. Validation through physical testing is recommended to ensure alignment with real-world conditions.
Karakteristik Uji Tarik dan Struktur Makro Plastic Waste dan Serat Bambu Putra, Wawan Trisnadi; Fadelan; Munaji; Winangun, Kuntang; Dwiprasetya, Chaesar Deserendy
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.841

Abstract

Plastics are widely used in wrapping food, drinks, and household furniture. This research uses materials in the form of shredded HDPE plastic, PET plastic seeds, and ori bamboo fiber. The composition of the mixture used is based on the weight fraction of a 65 gram specimen of mixed material. The main matrix of the mixture was HDPE; PET was added to increase stiffness; and bamboo fiber, as a natural reinforcement that strengthens the bond between components. Which strengthens the bond between the components. Results tensile test results showed the highest average value in specimen composition 1, which is 533.37 N with a tensile stress of 27.77 MPa. In specimen composition 5, the average value of the tensile test was 409.33 N and a tensile stress of 21.31 MPa. Due to the stronger nature of HDPE to bind the bamboo fibers, the tensile strength of the bamboo fibers will increase as the PET content decreases. With decreasing PET content. Macro test results showed that many air bubbles were trapped in the center of the tensile test sample which were not visible from the surface. not visible from the surface. PET plastic is not well mixed in the sample, while the bamboo fibers were well mixed in the test sample.
Studi kekuatan kekerasan dan kekuatan impact pada komposit diperkuat serat sansevieria dengan variasi penambahan amilum 6%-10% Edi Widodo; wistyo nugroho, wistyo nugroho
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.847

Abstract

Natural fiber reinforced polymer composites have become one of the areas of research that attract attention because of their superior and environmentally friendly mechanical properties. This study aims to determine the effect of adding starch 6%, 7%, 8%, 9%, 10% on the characteristics of the mechanical properties of composites reinforced with sansevieria fibers. The manufacture of this composite uses the hand lay up method with a fiber weight fraction volume of 30% and alkali treatment of sansevieria fibers with a concentration of 5% NaOH for two hours. This alkali treatment aims to reduce the content of lignin, hemicellulose, and dirt layers on the fiber surface. Testing the characteristics of mechanical properties in this study is the impact test and Shore D hardness test. In the good impact test results without the addition of starch, because the increasing concentration of starch can reduce the density of molecular bonds in the polymer matrix, so that the bond strength between molecules decreases. While the results of the Shore D hardness test are better adding starch, because starch acts as a filler that reduces local deformation on the composite surface when tested with an indenter on the Shore D hardness tester.
Pengujian dan Pengembangan Driving Cycle di Area Solo untuk Simulasi Kinerja Baterai Pack Kendaraan Listrik Putra, Mufti Reza Aulia; Setiawan, Bagas; Arifwardana, Julian Fikri
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.864

Abstract

Driving cycle testing is a crucial step in measuring the performance of battery electric vehicles (BEVs), especially in terms of energy efficiency and battery design optimization. This article discusses the driving cycle testing conducted in the Solo area, Central Java, to obtain a route that can be used in battery pack testing. The proposed driving cycle testing data shows good results, where the generated route pattern closely resembles the data in the model, with a difference of less than 3% between the field data and simulator data. The testing scheme using a 14.8 A load has met the applicable testing standards. Field test data recordings show an energy consumption value of 22.3 Ah, while simulation data shows a value of 22.8 Ah, with a difference of 2.2%. These recorded results provide consistent and relevant data to be used as input in electric vehicle simulators, allowing for more accurate simulations of battery performance under various real-world operational conditions. Therefore, this driving cycle data serves not only as a measure of vehicle efficiency but also as a valid basis for evaluating battery performance in simulator-based testing.
Simulasi Beban Statis dan Pemodelan Tingkat Lanjut pada Desain Kursi: Pendekatan Berbasis SolidWorks Yani, Ameliyana Rizky Syamara Putri Akhmad; Daru Gilang Kistianto; Rovario Aslam Hadib
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.868

Abstract

In-depth analyses are the purpose of this writing, which studies the part of Computer-Aided Engineering (CAE) in stool structural examinations. The focus is on numerous inquiries regarding the mechanical properties of varied substances, such as balsa, oak wood, or alloys, including alloy steel and AISI 304 stainless steel. The SolidWorks application made it possible to run simulations; repeated attempts were made to quantify displacement, stress, and strain. The Von Mises model is used for stress, URES was the tool most used to examine displacement, while for recording strain, the method used was estrn. Assessing mechanical behavior is the goal concerning various materials, which are viewed as a stepping stone to significantly improving the furniture design process's material selection strategies. The results of the study showed significant differences between the four materials. High stress and considerable changes were seen in oak and balsa wood; their biggest total displacement was recorded vertically. AISI 304 and alloy steel, on the contrary, showed impressive mechanical resistance, with lower stress and slightly bigger deformation occurring. In scenarios demanding rigidity and structural stability, this is suitable, emphasizing the utmost importance. Stressed is the designing of chair-making materials that strive to achieve usage-related functionality and aesthetic satisfaction
Rancang Bangun Sistem Transmisi Poros Pisau Penghancur Pada Mesin Crusher Plastik High Density Polyethylene (HDPE) Pramudi, Ganjar; Nur Rohman, Farhan
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.875

Abstract

The amount of plastic waste continues to rise alongside the increasing use of plastic packaging products. To mitigate the plastic problem in Indonesia, one approach is to recycle HDPE plastic waste into powder that can be utilized for composite materials. The initial step in producing powder from HDPE plastic waste involves shredding the HDPE plastic into small flakes. These plastic flakes are then ground into fine powder. The HDPE plastic crusher machine is powered by a 3 HP electric motor and operates at a rotational speed of 1400 rpm. The design of the blades on this machine features sharp and wide edges, with a total of eight blades. Additionally, the machine body is designed with a wider shape to optimize the plastic crushing process. The transmission system used to transfer rotation consists of a pulley, V-belt, and shaft. Proper planning of the shaft is essential to determine the appropriate diameter for the HDPE plastic crusher machine. Based on the planning results, the shaft diameter selected is 25 mm, with a minimum required diameter of 16.24 mm. The final rotational speed of the crusher blade shaft is 2800 rpm, with a torque of 13,410 N·mm applied to the shaft.
Reliability-Centered Maintenance (RCM) Approach in Fleet Maintenance To Enhance Transportation Efficiency and Safety Sugianto; Muthoriq, Ery; Pranoto, Ethys; Arjuna, Kevin; Shofiah, Siti
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.878

Abstract

Efficient and reliable public transportation systems, particularly bus services, played a crucial role in regional mobility and economic development. However, maintenance challenges impacted service quality, as seen in PT. SPS – Solo’s Scania fleet. Traditional reactive maintenance methods proved insufficient, leading to increased operational costs and unexpected failures. This study applied Reliability-Centered Maintenance (RCM) to optimize maintenance policies, identifying critical components and establishing effective strategies. Failure Mode and Effect Analysis (FMEA) revealed the brake chamber as the most critical component, followed by the stabilizer and tie rod/slack adjuster. Maintenance interval analysis recommended Time-Directed (TD) intervals from 26,090 km to 35,084 km and Condition-Directed (CD) intervals from 25,900 km to 70,168 km, based on component degradation patterns. Cost analysis highlighted air bellows as the highest-cost component (Rp. 2,350,000), while brake chambers had the lowest cost (Rp. 150,000). The study demonstrated that RCM improved fleet reliability and reduced maintenance costs. Implementing structured maintenance schedules, training programs, and condition monitoring systems was recommended. These findings provided a foundation for enhancing longdistance bus operations and could be adapted for other transportation sectors to achieve cost-efficient and reliable fleet management.
Perancangan Checking Fixture Sebagai Alat Inspeksi Komponen Underwing Tank Enclosure Pada Pesawat Fixed-Wing Kusuma, Samuel Surya; Hendaryanto, Ignatius Aris; Prayoga, Benidiktus Tulung; Winarno, Agustinus
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.884

Abstract

The underwing tank enclosure is a component of fixed-wing aircraft that was originally manufactured by a Spanish aerospace company, so all the tools and references were not available to the Indonesian aerospace company, one of which is the inspection process tool. This study aims to design a checking fixture to meet requirements and support the production process of the underwing tank enclosure component, ensuring efficient and compliant inspection processes for the Indonesian aerospace company. The research utilized CAD software to design the checking fixture and CAE software to analyze the structural strength of the main fixture frame using the Finite Element Method (FEM). The results include a checking fixture design employing checking pins to validate the dimensional contours of the underwing tank enclosure against specified geometric specifications. Structural strength analysis revealed a maximum Von Mises stress of 1,1119 MPa, a maximum deformation of 0,0074696 mm, and a minimum safety factor of 211,34, while the checking plate deformation analysis shows that the longitudinal checking plate component only experiences a maximum deformation of 0,0010525 mm, confirming that the main structural frame of the checking fixture and checking plate components are safe for use. Keywords: Design, Checking fixture, Inspection, FEM.
Analisis Efektivitas Produksi dengan Metode Total Productive Maintenance (TPM) Pada Mesin Ring Spinning (Studi Kasus : PT. XYZ) Zakiyyan Zain Alkaf; Nadia Nanzah; Bhre Wangsa Lenggana
Jurnal Teknik Mesin Indonesia Vol. 20 No. 1 (2025): Vol. 20 No. 1 (2025): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v20i1.889

Abstract

PT. XYZ is a textile manufacturer specializing in polyester/cotton-blended fabrics and yarns. A critical machine in its production process, the ring spinning machine, frequently experiences maintenance issues and breakdowns, resulting in decreased productivity. Production effectiveness was analyzed using the Total Productive Maintenance (TPM) approach, with Overall Equipment Effectiveness (OEE) and the Six Big Losses as key indicators. This study aims to calculate the OEE, identify the most significant losses affecting machine performance, and determine the main factors contributing to low productivity. Results show that the average OEE from June 2024 to January 2025 was 85%, with Availability at 93%, Performance at 92%, and Quality at 99%. Although these values are within a good range, improvements are needed to reach optimal efficiency. The dominant losses were Reduce Speed Losses and Idling & Minor Stoppages (each 7%), followed by Set Up and Adjustment Losses (5%). These were mainly caused by slow production, minor disruptions, and inefficient setup times. Strategic recommendations were proposed to enhance operational efficiency and reduce downtime.

Page 29 of 30 | Total Record : 291

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