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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 10 Documents
 1 
Search results for , issue "vol. 2 no. 2 (2025)" : 10 Documents clear
Design, Construction, and Testing of an Electric Wheelchair Operated by Arduino Uno R3 Microcontroller Subagyo, Yusuf; Sendie Yuliarto Margen; Baharudin Priwintoko; Fariz Wisda Nugraha; Hartanto Prawibowo
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/ha1z3r27

Abstract

The research aims to design and develop an electric wheelchair based on the Arduino Uno microcontroller as a mobility solution for individuals with disabilities. A conventional wheelchair was modified by integrating an electric drive system controlled by an analog joystick, which is connected to the Arduino Uno and DC motors via a BTS 760 motor driver. The wheelchair design complies with ISO 7176-5 standards and is adapted to the anthropometric dimensions of Indonesian users. Test results indicate that the control system functions effectively, allowing responsive control of wheelchair movements forward, backward, left, and right according to joystick operation. However, several challenges were encountered during the chain adjustment and gear welding processes, requiring further development to achieve optimal performance. This study demonstrates that utilizing the Arduino Uno as the central control unit enables the production of an electric wheelchair at a more affordable cost.
Antimicrobial Urinary Catheters: Fabrication Strategies and Their Role in Preventing Catheter-Associated Urinary Tract Infections - A Narrative Review Priwintoko, Baharudin; Anggiri, Refonda Rias; Hastuti, Siwi
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/rmfgdt72

Abstract

Catheter-associated urinary tract infections (CAUTIs) are among the most frequent healthcare-associated infections, primarily caused by biofilm formation on catheter surfaces. This narrative review summarizes recent progress in antimicrobial urinary catheter development, focusing on substrate materials, functional agents, and fabrication strategies. Common substrates such as silicone, polyurethane, and thermoplastic elastomers provide biocompatibility and durability but require modification to achieve antimicrobial performance. Strategies including surface coatings (e.g., dip- and spray-coating, sol–gel, and layer-by-layer deposition), impregnation, composite blending, and hybrid designs have been investigated to deliver sustained antimicrobial release, antifouling resistance, and improved patient comfort. Coating-based methods enable localized control of active agents, while bulk modifications ensure durability despite surface wear. Emerging approaches highlight multifunctional systems that integrate antimicrobial, antifouling, and lubricious properties, supported by precision techniques such as nanostructured coatings and bioinspired surface engineering. By linking material selection with fabrication design, this review underscores the need for scalable and cost-effective strategies that combine long-term antimicrobial protection, mechanical integrity, and regulatory compliance. Future research directions include hybrid fabrication methods, sustainable manufacturing, and clinical translation to reduce the global burden of CAUTIs.
The Effect of Infill Variation on the Tensile, Bending, Impact, Hardness, and Density Properties of PLA and ABS Materials Produced by FDM Saeful Rofi Romadhon; Wahyu Hidayat; Baskara Surya Widagdo
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/1nh12096

Abstract

Additive Manufacturing (AM) or 3D printing using the Fused Deposition Modelling (FDM) method offers high flexibility in the production of polymer components through process parameter settings, one of which is the infill percentage that affects mechanical performance. This study analyzes the effect of infill variations (25%, 50%, 75%, 100%) on the mechanical properties of two popular thermoplastic materials, Polylactic Acid (PLA) and Acrylonitrile Butadiene Styrene (ABS). Testing was conducted according to ASTM standards, including tensile strength, bending strength, impact strength, hardness, and density. The results show that PLA has higher tensile strength (47–53 MPa), bending strength, and hardness compared to ABS (33–38 MPa). Conversely, ABS demonstrates better toughness through higher impact values, while the difference in density is relatively small and insignificant. Increasing the infill percentage is proven to enhance strength and hardness in both materials, but this is accompanied by an increase in material consumption. These findings indicate a trade-off between stiffness and toughness, so material selection must be tailored to application requirements. PLA is more suitable for precision components requiring dimensional stability, while ABS is recommended for applications with dynamic loads and impact risks. This study provides a practical foundation for optimizing FDM parameters, particularly material and infill, in engineering, medical, and consumer product applications.
Photodegradator for Photocatalytic Enhancement of Laboratory Wastewater Quality Ilham Alkian; Khafidhotun Naimah; Hesti Rahayu; Adam Sumboko; Heri Sutanto
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/ajct8j07

Abstract

Laboratory activities such as practical courses, research experiments, and sample analyses often generate waste, with liquid effluents being the most prevalent. Proper treatment of these liquid wastes is essential prior to discharge into the environment to prevent contamination. Photocatalysis, a process that employs photon-activated semiconductor oxides, has emerged as a promising approach for wastewater treatment. In this study, bismuth oxide was developed as an alternative photocatalyst capable of operating under both UV and visible light. The material was synthesized via the sol–gel method and subsequently deposited using a spray-coating technique. The fabricated photocatalytic reactor was designed with integrated reaction chambers, control systems, and adjustable light intensity to enhance wastewater purification. Reactor parameters were systematically optimized to establish the most effective configuration for pollutant degradation. Experimental results demonstrated that higher light intensities significantly reduced the absorbance of liquid effluents, indicating a substantial decrease in contaminant concentration. Furthermore, the chemical oxygen demand (COD) and biological oxygen demand (BOD) of treated wastewater decreased by 24% and 64%, respectively.
Static and Dynamic Performance Evaluation of Three-Wheeled Vehicle Frames Based on Aluminum and High-Grade Steel Using Finite Element Simulation Yuzif, Rahman; Andiyanto, Andiyanto; priwintoko, baharudin
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/rfvn0v81

Abstract

The increasing demand for energy efficiency and lightweight transportation has encouraged the development of three-wheeled vehicles with optimized structural frames. This study evaluates the static and dynamic performance of three-wheeled vehicle frames using three high-performance materials Aluminium 7075-T6, S690 steel, and ASTM A572 HSLA 60 steel. Finite Element Analysis (FEA) was conducted with Altair HyperWorks to analyze stress distribution, deformation, safety factor, and natural frequency response. Static analysis results indicate that all materials are structurally safe, with S690 steel showing the highest stiffness and safety factor, while Aluminium 7075-T6 provides the greatest strength-to-weight efficiency despite higher deformation. ASTM A572 HSLA 60 offers moderate performance as a cost-effective alternative. Modal analysis reveals similar natural frequency ranges (1.5–3.2 Hz) across all materials, indicating that dynamic behavior is more influenced by geometry than material properties. The findings highlight the trade-off between strength, stiffness, and weight, suggesting Aluminium 7075-T6 as the optimal choice for lightweight and energy-efficient applications, while S690 steel is preferable for heavy-duty requirements. Overall, this research emphasizes a holistic approach in material selection for three-wheeled vehicle frames to balance mechanical strength, vibration characteristics, and energy efficiency.
Effect of Annealing Temperature on the Dynamic Characteristics of SS400 Steel Using Experimental Modal Analysis Andiyanto Andiyanto; Baharudin Priwintoko
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/fnxszx83

Abstract

Heat treatment can alter the stiffness-related and energy-dissipation behaviour of structural steels, but its influence on the modal response of SS400 steel is still rarely reported using direct experimental modal testing. This study evaluates the effect of annealing temperature on the dynamic characteristics of SS400 steel specimens under free-free boundary conditions. Four specimen conditions were investigated: raw material and annealed specimens at 700 °C, 800 °C, and 900 °C. Each specimen had dimensions of 200 mm x 20 mm x 5 mm. Experimental modal analysis was conducted using an impact hammer with a fixed uniaxial accelerometer, six roving-hammer measurement points, 10 kHz sampling rate, H1 frequency response function, Hanning windowing, and PolyLSCF stabilization. The first two bending modes were identified. The first natural frequency decreased from 491.655 Hz in the raw material to 434.364 Hz after annealing at 900 °C, corresponding to an 11.65% reduction. The second natural frequency decreased from 1327.165 Hz to 1173.168 Hz, corresponding to an 11.60% reduction. Damping ratios also decreased with increasing annealing temperature, with the largest reduction observed at 900 °C. The results indicate that annealing temperature strongly affects the modal properties of SS400 steel, particularly by reducing frequency- and damping-related indicators at higher temperatures. The contribution of this work is the direct comparison of raw and annealed SS400 modal parameters using the same free-free impact-testing configuration, which provides a baseline modal-response dataset for vibration-sensitive SS400 applications.
Comparative Mechanical Performance of FDM-Printed PETG and ABS at Different Infill Percentages Saeful Rofi Romadhon; Baharudin Priwintoko; Wahyu Hidayat; Baskara Surya Widagdo
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/y4n8aq82

Abstract

The use of Fused Deposition Modeling (FDM) in additive manufacturing requires a material selection strategy that considers not only strength, but also the balance between stiffness, ductility, toughness, and surface resistance. This study evaluates the comparative mechanical performance of Acrylonitrile Butadiene Styrene (ABS) and Polyethylene Terephthalate Glycol (PETG) at 25%, 50%, 75%, and 100% infill using FDM printing and performance-map analysis. Specimens were designed according to ASTM standards and printed using the same printer, hexagonal infill pattern, print speed, and build orientation, while material-specific parameters such as extrusion temperature, heated bed temperature, layer height, first-layer height, enclosure, and cooling fan setting were adjusted according to ABS and PETG processing requirements. Mechanical characterization included tensile, flexural, impact, Shore D hardness, and density tests. The highest tensile strength was obtained by PETG at 100% infill, reaching 40.74 MPa, while ABS at the same infill reached 38.72 MPa. PETG also showed the highest elongation at break of 16.16%, flexural strength of 59.51 MPa, and impact strength of 0.053 J/mm². In contrast, ABS produced the highest surface hardness, reaching 84.17 Shore D at 100% infill, compared with 80.42 Shore D for PETG. The density values of both materials increased with infill and became similar at 100% infill, namely 1.00 g/cm³. These findings confirm a clear trade-off between strength, toughness, resilience, and hardness in FDM materials. PETG offers a more balanced mechanical profile for applications that require strength, deformation tolerance, and impact resistance, while ABS remains relevant for applications that prioritize rigidity and surface hardness.
Effect of Flow Rate Variation on Solar Water Heater Performance Baharudin Priwintoko; Agus Lutanto; Yusuf Subagyo; Saeful Romadhon; Agus Prasetyo
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/nrhaqe41

Abstract

Solar energy potential in Indonesia is very large, yet its utilization for daily thermal needs still requires improvement through simple, economical, and efficient collector designs. This study analyzes the effect of fluid flow-rate variation on the performance of a trickle-type solar water heater with a V-shaped collector under local outdoor testing conditions. The novelty of the work lies in the combined evaluation of a V-shaped zinc-sheet absorber, trickle-type flow arrangement, north-facing 30° collector orientation, and practical flow-rate range of 2, 4, 6, and 8 L/min. The outdoor experiment was conducted from 09:00 to 12:00 Western Indonesia Time with repeated field observations for each flow-rate condition. Inlet temperature, outlet temperature, ambient temperature, collector temperature, cover temperature, wind speed, and solar radiation intensity were recorded and processed to determine useful heat gain, heat absorbed by the fluid, collector efficiency, fluid heat-absorption efficiency, and total efficiency. The results show that a lower flow rate produces a greater increase in fluid temperature, but it does not always produce the highest total efficiency. The 4 L/min flow rate provided the best performance, with a total efficiency of 55%, fluid heat-absorption efficiency of 71%, average fluid heat-transfer rate of 559.53 W, and estimated test-period fluid energy of 1678.59 Wh (6.04 MJ) during the 3 h test period. These findings indicate an optimum balance between fluid residence time and mass flow rate in improving solar water heater performance.
Design and Development of a Pneumatically Actuated Gravity Casting Machine for Aluminum Component Manufacturing Nur Wahid Panji Anggoro; Bagus Wicaksono; Sutimin
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/dngkz913

Abstract

Gravity casting using permanent metallic molds is widely adopted in small- and medium-scale foundries for producing aluminum components; however, the manual mold assembly and part-removal steps that characterize conventional practice impose physical constraints on cycle consistency, operator ergonomics, and achievable throughput. This paper presents the design and development of a pneumatically actuated Gravity Casting Apparatus Machine intended to overcome these limitations in the production of aluminum motorcycle accessory components at DTech Engineering, Ltd. The design process followed a structured engineering approach comprising problem identification, functional requirement formulation, CAD-based conceptual modeling using Autodesk Fusion 360 learning edition, component and material selection, and mechanical design calculation. The resulting machine integrates eight principal subsystems: a rigid base plate, precision S45C steel rail shafts, a pneumatically driven movable base plate, a two-part permanent mold fabricated from 40 mm iron plate, an automated ejector plate, a pneumatic air cylinder operating at 6 bar, a structural support table, and an electrical control panel with solenoid-based sequencing. Design calculations addressed pneumatic actuator sizing, rail shaft deflection under mold loading, thermal expansion of mold components, and structural safety factors. Material selection was governed by the dual requirement of mechanical rigidity and resistance to thermal deformation from the molten aluminum environment. Implementation of the machine reduced cycle time from 3.0 minutes per part to 1.24 minutes per part, confirming the validity of the design approach. The study provides replicable design guidelines for foundries seeking to modernize gravity casting operations through low-cost pneumatic automation. Quantitatively, the cycle time decreased by 58.7%, from 3.00 min/part to 1.24 min/part, increasing the estimated production capacity from 20.0 to 48.4 parts/h. The selected 100 mm bore and 25 mm rod double-acting cylinder provides theoretical closing and opening forces of 4.71 kN and 4.42 kN, respectively, at 6 bar.
Design, Kinematic Analysis, and Scaled Prototype Validation of a Pneumatic Ejection Mechanism for Supersonic Re-Entry Capsule Testing Alfan Firmansyah Aditya Aditya; Bagus Wicaksono; Akhmad Mukhlisin; Nur Hadi Ardiyanto; Rajni Rizkia Sirat; Muhammad Rafi Akbar Salahudin; Afzalurrohman Abdullah; Alfin Mardiansyah; Muchammad Rifki Sistiawan; Rajib Alamsyah; Rahmat Dani Sulistyo; Ade Firmansyah; Luthfy Iqbal Musthofa; Yoga Aditiya Dwi Syah Putra; Ahmad Yusuf Maulana; Pandu Priyo Jatmiko; Muhammad Thoriq Akmal Aliansyah; Johnson Fernando; Prayogi Dwi Kuncoro; Diah Ayu Suci Kinasih; Fajrul Falah
Multidisciplinary Innovations and Research in Applied Engineering Vol. 2 No. 2 (2025)
Publisher : Akademi Inovasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70935/epbt3536

Abstract

High-altitude free-flight tests require release mechanisms capable of placing sub-scale re-entry capsules into a clean supersonic freestream while minimizing wake-induced attitude perturbations. This study presents AERO, a compact pneumatic ejection mechanism developed to support NASA SPEED-class capsule-release requirements as a scientific contribution to re-entry testing technology. The method combined wake-clearance interpretation, first-order kinematic sizing, pneumatic force analysis, CAD-based packaging, manufacturability assessment, and scaled prototype testing. A two-projectile-length clearance distance of 1.33 m was adopted, giving a required initial velocity of 5.11 m/s for a 0.5 s separation target. The full-scale analytical model predicted an ejection velocity of 5.2 m/s and a 0.44 s separation time at 0.5 MPa; increasing the operating pressure to 1.5 MPa increased the velocity to 9.7 m/s and reduced the separation time to 0.15 s. A 30% scale prototype using a 32 g Genesis Firefly capsule model showed a pressure-dependent height response, increasing from 63.0 cm at 0.2 MPa to 136.8 cm at 0.6 MPa. These findings provide analytical and scaled-prototype evidence that a pressure-tunable pneumatic architecture with a balancing hugger can support rapid, repeatable, and geometry-adaptable capsule ejection; flight-representative performance remains to be validated.

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