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Multidisciplinary Innovations and Research in Applied Engineering
Published by Akademi Inovasi Indonesia
ISSN : -     EISSN : 30638720     DOI : https://doi.org/10.70935
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
MIRAE Journal is dedicated to publishing innovative research and reviews in science and technology. We focus on mechanical engineering and product design, industrial and manufacturing engineering, electrical and electronics engineering, computer science and engineering, biomedical engineering, materials science and engineering, Internet of Things (IoT) and smart systems, and renewable energy and sustainability. Our goal is to advance understanding and provide multidisciplinary solutions to contemporary challenges in these fields, leveraging the intersection of disciplines and fostering innovation. Scope: 1. Mechanical Engineering and Product Design: Mechanical systems design, robotics, thermal systems, fluid dynamics, and product design engineering. 2. Industrial and Manufacturing Engineering: Advanced manufacture, operations research, logistics, supply chain management, human factors engineering, industrial management, and commercialization strategies. 3. Electrical and Electronics Engineering: Power systems, renewable energy technologies, circuit design, signal processing, and telecommunication. 4. Computer Science and Engineering: Artificial intelligence, machine learning, cybersecurity, software engineering, and computational theory. 5. Biomedical Engineering: Medical devices, bioinformatics, biomaterials, and healthcare technologies. 6. Materials Science and Engineering: Nanotechnology, smart materials, composite materials, and material characterization. 7. Internet of Things (IoT) and Smart Systems: Industrial IoT, sensor networks, and smart cities. 8. Renewable Energy and Sustainability: Solar energy, wind energy, bioenergy, and energy storage systems.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 6 Documents
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Search results for , issue "vol. 3 no. 1 (2026)" : 6 Documents clear
Design and Structural Evaluation of an Adaptive Traction Rover Wheel for Lunar Mobility Applications Ahmad Samsul Arbai; Azzahra Nazwa Asyifa; Rajni Rizkia Sirat; Johnson Fernando; Rahmat Dani Sulistyo; Fajrul Falah
Multidisciplinary Innovations and Research in Applied Engineering Vol. 3 No. 1 (2026)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/k0qrps35

Abstract

Lunar rover wheels must combine low mass, traction, compliance, abrasion resistance, and maintainability under vacuum, thermal cycling, and unconsolidated regolith. This study develops and evaluates an adaptive traction rover wheel for lunar surface mobility applications. The method combined requirement definition, terramechanics-based grouser sizing, material selection, CAD-based structural packaging, finite element evaluation, manufacturability assessment, and service-life estimation. The proposed wheel uses a two-piece Ti-6Al-4V rim, ten alternating compliant titanium spokes, ten 27 mm V-shaped grousers, a 6061-T6 aluminum hub, riveted mechanical joints, and Cr3C2-NiCr HVOF coating on soil-contact surfaces. The design achieved a diameter of 0.457 m, a width of 0.203 m, and a total mass of 2.254 kg. Linear-elastic structural screening indicated that the wheel supported a nominal normal load of 256 N with a factor of safety of approximately 2 based on a minimum Ti-6Al-4V yield-strength criterion of 828 MPa. The 3 g impact screening case produced a local peak von Mises stress of approximately 900 MPa, exceeding this conservative yield criterion and therefore requiring nonlinear analysis and experimental validation. Traction capability, wear resistance, and 1,000 km service-life estimates are analytical projections derived from geometry and wear modeling, not fully validated operational performance. The proposed architecture is therefore a lightweight, repairable, and traction-oriented wheel concept requiring targeted laboratory validation before mission use.
Service-Life Analysis and Effect of Grease Lubrication on Wear of ASB 6302-2RS Ball Bearing in the AST-MPV Machine Rilo Chandra Muhamadin; Ilham Arifin Pahlawan; Alviani Hesthi Permata Ningtyas; Gilang Taufiqu Rachman; Baharudin Priwintoko; Fariz Wisda Nugraha; Yusuf Subagyo; Mohammad Rizqi Abdul Basyith
Multidisciplinary Innovations and Research in Applied Engineering Vol. 3 No. 1 (2026)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/e9ymyr07

Abstract

Bearings are critical elements for supporting shaft rotation in industrial equipment. In the AST-MPV detergent-packaging machine at PT. X, ASB 6302-2RS bearings frequently experience jamming because of detergent-dust contamination. This study analyzed bearing service life and evaluated, as an initial comparative observation, the effect of additional grease under detergent-water exposure. The analytical stage used rotational speed, load conversion, dynamic equivalent load, and nominal bearing-life calculation with standardized N and kN units. The experimental stage compared two specimens: bearing A with manually applied Black Grease NLGI 3 LA and bearing B without additional grease. Both specimens were immersed in a 2 kg detergent and 1 L water mixture for five days, rotated at 1000 rpm for 30 min and 1500 rpm for 30 min, and measured using caliper and dial indicator. The corrected spring deflection was 0.006 m, and the calculated service life was 3479.1223 h at 1930 rpm. Additional grease reduced radius wear from 0.52 mm to 0.13 mm and outer-diameter wear from 0.10 mm to 0.03 mm. These findings suggest that scheduled grease lubrication may reduce wear in detergent-contaminated environments, although replicated testing is required.
Failure Analysis of a Rear-Sprocket Mounting (Nap Gear) Bolt in a 145 cc Motorcycle Ambo Ardy Pranowo; Andiyanto Andiyanto; Ruben Sanilo; Hammam Abdirrazzaq Ats Tsaqif
Multidisciplinary Innovations and Research in Applied Engineering Vol. 3 No. 1 (2026)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/mdt14h15

Abstract

Rear-sprocket mounting bolts, referred to in this study as nap gear bolts, transmit torque from the rear sprocket assembly to the wheel hub through the damper/bushing interface and may experience repeated transverse shear and bending loads. This study investigates the fracture of a rear-sprocket mounting (nap gear) bolt from a 145 cc motorcycle to determine its material characteristics, fracture mechanism, and mechanical cause of failure. The investigation combined macro-fractographic observation, spark-emission chemical composition testing, optical metallography, Vickers microhardness testing, and finite element analysis of a three-dimensional bolt model. The measured chemistry was consistent with the SAE 1015 low-carbon steel composition range, with 0.137 wt.% C and a ferrite-pearlite microstructure; however, the grade designation is reported as a chemical-consistency assessment rather than a mill-certified material identification. No abnormal microstructural difference or surface-hardening layer was observed between the failed and intact bolts. The hardness values were 179-190 HV0.5 for the failed bolt and 169-183 HV0.5 for the intact bolt. Fractography identified a proposed crack-initiation region, a crack-propagation region with beachmark-like macroscopic features, and a final-fracture region. Finite element analysis predicted a local maximum stress intensity, defined as the difference between the maximum and minimum principal stresses, of 529.6 MPa at the fracture location; the corresponding maximum shear stress was 264.8 MPa. The failure is therefore attributed to fatigue initiated at a stress-concentrated region, while the available evidence does not indicate that material selection or gross metallurgical abnormality was the primary cause.
Preliminary Thermo-Mechanical Assessment of a Pneumatically Actuated Permanent-Mold Gravity-Casting Apparatus Nur Wahid Panji Anggoro; Sutimin Sutimin; Bagus Wicaksono
Multidisciplinary Innovations and Research in Applied Engineering Vol. 3 No. 1 (2026)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/g4vgw180

Abstract

Low-cost automation of permanent-mold gravity casting requires adequate actuator capacity, guide stiffness, and accommodation of differential thermal growth. This study presents a preliminary analytical assessment of a compact, pneumatically actuated permanent-mold gravity-casting apparatus. The assessment uses documented geometry and conservative screening assumptions for a 100 mm-bore double-acting cylinder at 0.60 MPa, a 25 mm piston rod, two 40 mm S45C guide shafts over a 0.60 m span, locally procured bronze sleeve bushings, and a ferrous mold plate that is 40 mm thick with a 0.40 m axial characteristic length. For horizontal translation, the force model excludes the full assembly weight from the cylinder-axis resistance and includes guide friction (μ = 0.15), 100 N ejector-spring resistance, a 200 N unmeasured process allowance, and a design factor of 2. The resulting factored demand is 0.748 kN. The extension and retraction load ratios are 0.159 and 0.169 relative to theoretical cylinder output, below the 0.50 guideline used for dynamic cylinder selection. The idealized guide-shaft model predicts 0.045 mm deflection and 5.97 MPa bending stress. Nominal thermal growth is 1.20 mm for the 0.40 m mold dimension and 0.44 mm for the 0.80 m rail length under assumed temperature rises, leaving a nominal 0.80 mm margin against a 2.0 mm drawing allowance before tolerance effects. Because the mold grade, bronze alloy, as-built clearance, stroke history, and trial-cycle data were not documented, no durability, measured-alignment, or material-specific PV-compliance claim is made. The contribution is an integrated and explicitly bounded force-stiffness-thermal screening framework for low-cost casting apparatuses.
Bearing Life Calculation and Experimental Evaluation of 6302-2RS Ball Bearing with Grease Lubricant Variations Wahyu Hidayat; Mohammad Rizal Safri; Rilo Chandra Muhamadin; Ilham Arifin Pahlawan; Alviani Hesthi Permata Ningtyas; Muhammad Arryyanto; Mohammad Rizqi Abdul Basyith
Multidisciplinary Innovations and Research in Applied Engineering Vol. 3 No. 1 (2026)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/gr9z3w92

Abstract

Rolling bearings are critical machine elements, but catalogue rating life and short-duration workshop observations must be interpreted separately. This study calculated the ISO 281 basic rating life of a Koyo/JTEKT 6302-2RS deep-groove ball bearing (JTEKT Corp., Kariya, Aichi Japan) and conducted a preliminary comparison of three lubrication treatments. The calculation used the current JTEKT basic dynamic load rating C = 14.3 kN, an equivalent radial load P = 98.1 N, and the ball-bearing exponent p = 3. Three bearings were used (n = 1 per treatment). Their seals were removed, the factory grease was cleaned out, and the specimens were either left without reapplied grease or manually filled with Cobra® Chassis Grease Green No. 3 or Deltalube® 056 General Purpose Grease EP 2; the applied grease mass was not recorded. Each specimen was tested sequentially for 30 min at 1000 rpm and 30 min at 1500 rpm under the same radial load. The corrected basic rating life was 3.097 × 10¹² revolutions, equivalent to 5.162 × 10⁷ h at 1000 rpm and 3.442 × 10⁷ h at 1500 rpm. These very large values reflect an idealized rating-life calculation at a load far below the catalogue capacity and are not an experimentally validated service life. After cumulative testing, the recorded outer-diameter changes were 0.05 mm for the grease-free control, 0.03 mm for Cobra® grease, and 0.01 mm for Deltalube® grease; these changes are comparable with the stated caliper accuracy. At 1500 rpm, the outer-ring radial runout values were 0.30, 0.16, and 0.15 mm, respectively, while the inner-ring values were 0.09, 0.05, and 0.04 mm. Deltalube® grease produced the lowest observed dimensional change and runout under the present conditions, but the unreplicated, sequential test does not support statistical or long-term reliability claims.
Optimization of Nickel Coating Thickness on Copper via Ultrasonic-Assisted Electroplating Sendie Yuliarto Margen; Yusuf Subagyo; Keysia Manda; Candra Kurniawan; Fariz Wisda Nugraha; Imaduddien Ariefa; Komar Roni; Rieky Handoko; Anton Harseno; Sahal Ahmad Albab; Yuris Bahadur Wirawan; Baharudin Priwintoko; Agus Prasetyo
Multidisciplinary Innovations and Research in Applied Engineering Vol. 3 No. 1 (2026)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/rvmsk491

Abstract

This study provides a preliminary descriptive comparison of nickel coating thickness deposited on copper at a fixed current of 1.5 A and an electrolyte temperature of 45 °C for 60, 120, and 180 s, with and without assistance from a nominal 40 kHz ultrasonic bath. The Watts electrolyte contained nickel sulfate 300 g/L, nickel chloride 30 g/L, boric acid 30 g/L, brightener I 15 mL/L, and brightener II 1 mL/L. Based on the specimen dimensions shown in the experimental schematic and assuming that both broad faces were exposed, the nominal cathode area was approximately 29.82 cm² and the nominal current density was 5.03 A/dm²; this estimate excludes edge area and remains uncertain because masking and actual immersion were not documented. The reported local cross-sectional thickness increased from 4.76 to 8.27 µm without ultrasound and from 8.34 to 13.43 µm with ultrasonic-bath assistance as deposition time increased. Descriptive linear fits across the three time points gave R² values of 0.9995 and 0.9991, respectively. The ultrasonic-assisted values were 62.4–75.2% higher than the corresponding conventional values. Because the archived dataset contains one reported mean per condition based on repeated measurement locations rather than documented independent specimens, statistical significance, optimization, current efficiency, adhesion, uniformity, and overall coating quality are not claimed. The findings therefore constitute preliminary evidence that longer deposition time and ultrasonic-bath assistance were associated with higher locally measured nickel thickness under the reported conditions.

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