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Agus Widyianto
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Journal of Automotive and Mechanical Applied Technology
Published by Universitas Negeri Yogyakarta
ISSN : -     EISSN : 30897793     DOI : https://doi.org/10.21831/jamat.v1i1
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Focus and Scopes The Journal of Automotive and Mechanical Applied Technology (JAMAT) is dedicated to disseminating original research, reviews, and case studies that contribute to the advancement of automotive engineering and mechanical technology. The journal provides a platform for academics, researchers, and practitioners to share innovative ideas, methodologies, and applications in the fields of automotive and mechanical engineering. Scope Areas: Automotive Engineering Advanced vehicle design and development. Powertrain and propulsion technologies (internal combustion engines, hybrid, and electric vehicles). Automotive safety systems and crashworthiness. Autonomous and connected vehicle technologies. Vehicle dynamics, control systems, and diagnostics. Mechanical Engineering Applications Design, analysis, and manufacturing of mechanical systems. Thermodynamics, fluid mechanics, and heat transfer applications. Computational methods and simulations in mechanical engineering. Material science and advanced manufacturing techniques. Robotics and mechatronics. Applied Technologies Integration of Industry 4.0 in automotive and mechanical sectors. Sustainable and green technologies for mechanical and automotive systems. Maintenance and reliability engineering. Applications of AI and machine learning in automotive and mechanical fields. Focus: The journal accepts contributions from a wide range of sectors, including but not limited to: Academic research institutions. Automotive and mechanical industries. Governmental and non-governmental organizations involved in technology development. Articles can focus on theoretical studies, experimental research, applied projects, and reviews of emerging technologies. Submissions are encouraged to explore innovations, problem-solving techniques, and practical implementations that impact the industry and society.
Arjuna Subject : Teknik (semua kategori) - Teknik Otomotif
Articles 14 Documents
 1   2 
Design and Analysis of Orbital Pipe Welding Prototype for Piping System Welding Applications Widyianto, Agus; Baskoro, Ario Sunar; Kiswanto, Gandjar
Journal of Automotive and Mechanical Applied Technology Vol. 1 No. 1 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v1i1.797

Abstract

Welding the joints of pipes is often required for maintenance and repairs in industrial applications, where pipes are frequently used. A prototype of an orbital pipe welding machine was constructed, and its design, analysis, and construction were carried out. The goal of this endeavor was to improve the quality of the welding process as well as overall productivity. The design study was carried out with the assistance of the SolidWorks program, which allowed for the determination of the stress, strain, displacement, and factor of safety imposed on the gear section throughout the welding and pipe installation process. During pipe installation, the gear section experiences maximum stresses of 3.920e+12 MPa, 5.029e+05 MPa, and 2.239e+06 MPa, respectively. These stresses are a result of the pipe being installed. When the pipe is installed, the highest strain in the gear section is 1.802e+01%, 3.030e-06%, and 8.439e-06%, respectively. This strain happens when the pipe is installed. In addition, the maximum displacement in the gear section is 3.074e+09 mm, 3.215e+04 mm, and 6.312e-03 mm, respectively, when the pipe is mounted and the pipe is installed. With a value of 1.5, the analysis results demonstrated that the maximum stresses, strains, and displacements in the gear section during the welding process are sufficient to fulfill the requirements for the critical safety factor. This demonstrates that the orbital pipe welding equipment may be utilized to generate welds of superior quality while simultaneously enhancing both productivity and efficiency through its utilization.
Analysis of The Effects of Oil and Fuel Type on Motorcycle Fuel Consumption Vario 125 CC ESP FI Pangestu, Firmansyah Arya; Sampurno, Yoga Guntur; Nugraha, Beni Setya
Journal of Automotive and Mechanical Applied Technology Vol. 1 No. 1 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v1i1.801

Abstract

The efficiency of fuel consumption in motorcycles is determined by multiple factors, such as the type of oil and fuel utilized. The careful choice of these two elements is essential for enhancing engine performance and reducing operational expenses. This study examines the impact of various oil and fuel types on the fuel consumption of the Honda Vario 125 cc ESP FI motorcycle, with particular attention to the relationship between engine oil viscosity and fuel quality. The study involved conducting experiments with a range of engine oil combinations, specifically 10W-30 and 20W-40, alongside different fuels like Pertalite and Pertamax, each exhibiting distinct octane ratings and combustion properties. The methodology included systematic and thorough testing in controlled environments, where factors like distance and load were standardized to guarantee precision and consistency. The results indicated clear variations in fuel efficiency among the tested combinations. The application of 10W-30 oil in conjunction with Pertalite fuel resulted in a 0.76% enhancement in efficiency when compared to the use of 20W-40 oil with the same fuel type. In a comparable analysis, 10W-30 oil demonstrated a 3.87% increase in efficiency over 20W-40 oil when used with Pertamax fuel. In the analysis of fuel types, Pertamax demonstrated a 16% increase in efficiency compared to Pertalite when used with 10W-30 oil, and a 12.52% increase in efficiency with 20W-40 oil. The results highlight the benefits associated with the utilization of high-quality, low-viscosity oils and higher-octane fuels in achieving improved fuel economy. In summary, the most effective combination for achieving fuel efficiency and cost savings is the use of 10W-30 oil alongside Pertamax fuel. This pairing is advised for Honda Vario 125 cc ESP FI users aiming for improved performance and lower fuel costs.
Design and Development of a Special Service Tool For Front Brake Caliper Sliding Extractor in Vehicles Riantama, Muhammad Dimas; Solikin, Moch
Journal of Automotive and Mechanical Applied Technology Vol. 1 No. 1 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v1i1.810

Abstract

Special service tools are essential in maintenance and repair processes, aiming to facilitate work. One of the primary maintenance and repair areas in vehicles is the braking system, which requires specialized tools. This study designed and developed a tool to assist with the maintenance and repair of the vehicle brake system. The objectives of this study were to create a sliding calliper extractor for front brakes and to evaluate its performance. The second step involved creating an illustration of the new method and designing the tool. Load testing and design analysis were conducted before production. Design evaluation was necessary before entering the manufacturing stage, and finally, performance testing and evaluation data were collected to ensure conformity with the initial design. The steps resulted in a sliding calliper tool with dimensions of 120 mm x 65 mm x 35 mm, a weight of 0.742 kg, and tensile strength of up to 650 N/65 kg. Testing on the front brake calliper of a Suzuki vehicle demonstrated the tool’s effectiveness in removing calliper pins at a load limit of 650 N. Performance tests confirmed the tool’s functionality and alignment with the initial design. The extractor successfully removed pins with an average load of 500 N/50 kg. The tool was simple and user-friendly, with testing showing no deflection, and no scratches or damage were observed on components around the pin during pin extraction. This result was supported by simulation analysis, where the equivalent stress under a 489 N/49 kg limit load was 47.043 MPa.
Design of Hino Series Wheel Bearing Grease Filling Tool to Improve Efficiency Performance at Hino MPM Solo Pramuditya, Alfian Bagas; Solikin, Moch; Sampurno, Yoga Guntur
Journal of Automotive and Mechanical Applied Technology Vol. 1 No. 1 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v1i1.814

Abstract

Efficiency in the vehicle maintenance process is a major concern considering that it can have an impact on saving time, improving accuracy and minimizing operational costs. The use of innovative tools is expected to increase efficiency in the vehicle maintenance process. The current manual lubricant filling process proves to be time-consuming, requires extra labor, and is prone to inconsistency, which can lead to bearing damage. This research focuses on the design and manufacture of a lubricant filling tool for wheel hub bearings on Hino Series vehicles, which aims to improve maintenance efficiency at Hino Mitra Pratama Mobilindo Solo. The tool is designed using the ADDIE model, which includes needs analysis, design, development, and testing stages. The tool consists of a frame, arm holder, lubricator housing, and pressure plate, all of which are designed to ensure proper lubrication and minimize contamination. Tests show that the tool significantly reduces lubricant filling time, with a 418% increase in efficiency compared to the manual method. It also delivers more consistent results, improving work efficiency and productivity.
Improvement of Spare Part Arrangement with Class Based Storage Method and 5s Method in Spare Part Room PT. Wahana Sun Solo (Indomobil Nissan Datsun Solo Baru) Sambada, Faros; Wahyudi, Kurniawan Sigit; Arifin, Zainal
Journal of Automotive and Mechanical Applied Technology Vol. 1 No. 1 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v1i1.815

Abstract

The aims of the improvements made in the spare part room at PT. Wahana Sun Solo were to: (1) organize the spare parts storage area based on specifications; and (2) increase effectiveness and work efficiency in locating spare parts while creating a work area that adheres to the 5S method standards set by Nissan Motor Indonesia (NMI). The improvements in the spare part room were implemented through several processes: identifying the spare part room layout, redesigning the storage system using a class-based method, updating labels, and designing the improvement of the 5S method. Testing was conducted by performing a time study and a partman movement study focused on locating three sample spare parts: brake pads, air filters, and fan belts. An assessment index was conducted using an evaluation sheet after the improvements were made. The class-based storage method improvement created a more organized arrangement of spare parts according to types. Updates to labeling and enhancements to the 5S method significantly improved the partman's effectiveness and efficiency. Testing demonstrated that the time required to locate brake pad samples resulted in an efficiency increase of 144%, improvement of 218% for air filters, and improvement of 182% for fan belts. Observations showed that, on average, the partman's search required 5 fewer steps for brake pads, 7 fewer steps for air filters, and 5 fewer steps for fan belts compared to the pre-improvement process. In addition, the observation on the movements involved in locating spare parts resulted in reduced movements by at least two movements. The assessment sheet completed after the improvement yielded an assessment index of 91.2%.
Periodic Maintenance Analysis Of Locomotive Series CC201 And CC203 Using Markov Chain Method at UPT.Balaiyasa Yogyakarta Zufar, Muhammad Nafidz; Nugraha, Beni Setya; Sudarwanto
Journal of Automotive and Mechanical Applied Technology Vol. 1 No. 1 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v1i1.816

Abstract

The objectives of this study are: (1) To get and provide the right periodic maintenance implementation time on CC201 locomotive maintenance. (2) To get and provide the right periodic maintenance implementation time on CC203 locomotive maintenance. The method used in this research is Markov Chain, using the type of applied research. This research uses a quantitative approach. The data collection techniques used are (1) Primary Data Collection; and (2) Secondary Data Collection. Meanwhile, the research instruments used (1) Observation Sheet; and (2) Documentation. The data analysis used is (1) Determination of Condition or State; (2) Creating a Transition Matrix; and (3) Steady State Analysis to get the probability of locomotive conditions in good condition, lightly damaged, moderately damaged or severely damaged. The results of this study show that: (1) The right periodic maintenance implementation time on CC201 locomotive maintenance is proposal II at interval P2 with the highest probability of good condition of 0.609 and the lowest probability of heavy condition of 0.021. With this, a maintenance scheduling policy is obtained for every 1 month to perform periodic maintenance on day 7,128. (2) The right periodic maintenance implementation time for CC203 locomotive maintenance is proposal II at interval P2 with the highest probability in good condition of 0.619 and the lowest probability in severe condition of 0.142. With this, a maintenance scheduling policy is obtained for every 1 month to perform periodic maintenance on day 24,516.
The Use of Flow Rack as an Effort to Implement Kaizen in an Effort to Increase the Production of Stepwagon Car Seats at PT YSC Japan Ridwan, Elgrid Tornado; Wahyudi, Kurniawan Sigit; Arifin, Zainal
Journal of Automotive and Mechanical Applied Technology Vol. 1 No. 1 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v1i1.833

Abstract

This study aims to: (1) analyze the performance data of workers at PT. YSC Japan before the implementation of an innovation involving the addition of a Flow Rack; (2) examine the process of adding the Flow Rack and its impact on worker performance at PT. YSC Japan; and (3) evaluate how the Flow Rack innovation enhances worker productivity at PT. YSC Japan. The study employs the Kaizen concept using the 8-Step Improvement method, with a fishbone diagram utilized for cause-and-effect analysis. Data were collected through observation and documentation, using instruments such as a logbook, observation sheet, and smartphone. Descriptive quantitative analysis was conducted to compare production speeds before and after process improvements. The findings reveal that: (1) PT. YSC Japan required efficiency enhancements, as production on the Line Front Cushion Stepwagon experienced a loss time of 90 seconds per 22 pieces, resulting in a production time of 38.7 seconds per piece; (2) the application of the Kaizen concept, using the 8-Step Improvement method, successfully improved productivity through the addition of a Flow Rack as a storage innovation; and (3) after implementing this change, PT. YSC Japan achieved a 10.3% efficiency improvement, reducing production time to 34.7 seconds per piece.
Testing of Design and Functionality of Front Suspension Arm in UNY Automotive Electric Vehicle for Individuals with Disabilities Candra Kusuma Aditama; Muhammad Yusri Ismail; Ibnu Siswanto
Journal of Automotive and Mechanical Applied Technology Vol. 2 No. 1 (2025): June
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v2i1.1276

Abstract

This study aims to evaluate the design and functionality of the front suspension arm in an electric vehicle specifically designed for users with disabilities. The research focuses on the lower arm component, analyzing its structural integrity through finite element analysis using ANSYS Student Version. The simulation was conducted under two loading conditions: 1300 N and 4800 N, representing different stress scenarios based on the vehicle's weight distribution. The safety factor analysis indicates that under a 1300 N load, the lower arm achieves a safety factor of 9.37, demonstrating high structural strength. Under an increased 4800 N load, the safety factor decreases to 2.54, which remains within the acceptable range (2.5–4.0) for static components subjected to dynamic loads. In terms of stress distribution, the simulation results indicate that the maximum stress is 39.51 MPa at a load of 1300 N. In contrast, it reaches 145.9 MPa at 4800 N. The displacement analysis reveals that the maximum deformation under 1300 N is 0.03023 mm, increasing to 0.1116 mm under 4800 N, indicating minimal structural deformation. Based on these findings, the lower arm suspension is deemed structurally safe and capable of withstanding the expected operational loads. These results offer valuable insights for the development of adaptive electric vehicles, ensuring their reliability and safety for users with disabilities.
Development of a Real-Time Vibration Monitoring System for Drum Tester Machines Using ADXL345 Sensor and ESP32 Microcontroller Herdiansyah Noorrizky Anggana; Moch Solikin
Journal of Automotive and Mechanical Applied Technology Vol. 2 No. 1 (2025): June
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v2i1.1277

Abstract

This study focuses on developing a vibration level monitoring system for a drum tester machine, utilizing the ADXL345 sensor in conjunction with the ESP32 microcontroller and a web-based monitoring platform. The system was implemented at PT Astra Daihatsu Motor's Sunter Assembly Plant (SAP) located in Jakarta, Indonesia, for large-scale industrial use. The design aimed to boost precision in vibration monitoring and elevate workforce productivity. The sensor collects data, which is then sent to a MySQL database and shown in real-time on an LCD and through a Grafana-based web interface. Functional tests verified that all components performed as specified. The ESP32 microcontroller provided reliable Wi-Fi connectivity, and the ADXL345 sensor showed impressive accuracy in detecting vibration changes in both static and dynamic situations. Performance tests conducted over eight hours, with data collected at one-minute intervals, demonstrated consistent readings across all axes (X, Y, Z), highlighting the system's reliability. The implementation of this system resulted in enhanced efficiency in machine monitoring. The inspection interval has been extended from two weeks to one month, which has reduced the workforce requirements from two workers to one. Moreover, the time required for inspection was reduced from 20 minutes to only one minute. To summarize, this vibration monitoring system enhances the accuracy of real-time data, improves workforce efficiency, and ensures reliable monitoring of machine conditions. This offers a creative approach for industrial uses, enhancing operational efficiency and ensuring workplace safety.
Prototype of an Adaptive Wiper System for Electric Vehicles for Disabled Users Using a Servo Motor Nugroho, Raihan Bayu; Warsita, I Wayan; Adiyasa, I Wayan
Journal of Automotive and Mechanical Applied Technology Vol. 2 No. 1 (2025): June
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jamat.v2i1.1342

Abstract

This study presents the design and implementation of a prototype wiper system using a servo motor, specifically developed for electric vehicles designed for persons with disabilities. The system is structured through several stages, including the creation of a wiring diagram, the development of a control system based on an Arduino Uno microcontroller, and the integration of key components such as a 12V battery, a three-position switch, a step-down LM2596 module, and an RDS3239 servo motor. The control logic enables two-speed wiping modes low and high regulated by user input via the switch. Electrical testing demonstrated that the current drawn by the system was 0.26 A at low speed and 0.37 A at high speed, with corresponding power consumption of 3.12 W and 4.44 W, respectively. These values fall within safe operating limits, indicating energy efficiency suitable for electric vehicle applications. Motion testing showed that the system achieved 30 wipes per minute at low speed and 60 wipes per minute at high speed, with the high-speed mode meeting the minimum functional criteria set by national standards. Angular deviation analysis further revealed that increased speed slightly impacted sweep precision, though still within acceptable tolerances. The results indicate that the developed system not only performs effectively in varying operational conditions but also offers energy-efficient and responsive functionality. This makes it a viable solution for adaptive and accessible mobility technologies in electric vehicles for persons with disabilities.

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