cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Khairul Anam
Contact Email
khairul.anam27@ub.ac.id
Phone
+62341 - 552491
Journal Mail Official
mechta@ub.ac.id
Editorial Address
Redaksi International Journal of Mechanical Engineering Technologies and Applications (MECHTA), Jurusan Teknik Mesin Fakultas Teknik, Universitas Brawijaya Jl. MT. Haryono 167 Malang, Jawa Timur Indonesia 65145
Location
Kota malang,
Jawa timur
INDONESIA
International Journal of Mechanical Engineering Technologies and Applications (MECHTA)
Published by Universitas Brawijaya
ISSN : -     EISSN : 27223213     DOI : https://doi.org/10.21776/ub.mechta
Core Subject : Science, Engineering,
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering
International Journal of Mechanical Engineering Technologies and Applications (MECHTA) is published by Mechanical Engineering Department, Engineering Faculty, Brawijaya University, Malang, East Java, Indonesia. MECHTA is an open-access peer-reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in mechanical engineering. MECHTA accepts submissions from all over the world, especially from Indonesia. MECHTA aims to provide a forum for international academicians, researchers, and practitioners on mechanical engineering to publish the original articles. All accepted articles will be published and will be freely available to all readers with worldwide visibility and coverage. The scope of MECHTA is specific topics issues in mechanical engineering such as design, energy conversion, manufacture, and metallurgy. All articles submitted to this journal can be written in the English Language.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 244 Documents
 12   13   14   15   16 
SPATIAL AND TEMPORAL POTENTIAL OF CURRENT ENERGY AND WAVE HEIGHT IN INDONESIAN SEA Alamsah, Azwar; Wahjudi, Ari; Moon, Park Jae; Hamidi, Nurkholis; Widhiyanuriyawan, Denny
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 2 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.02.8

Abstract

The energy demand in Indonesia continues to rise, with a primary reliance on fossil fuels, leading to environmental issues such as increased CO2 emissions. To address these challenges, the exploration of renewable energy, particularly from wave and ocean current sources, becomes crucial. This research analyzes the energy potential generated from waves and ocean currents throughout Indonesia using the WAVEWATCH-III method for modeling marine data over a 10-year period. The results indicate that the energy potential from ocean currents ranges between 120-150 kW, with strategic locations around straits such as the Makassar Strait and the Java Sea. Meanwhile, the potential energy from ocean waves reaches approximately 2.5 GW over a three-month period, thanks to Indonesia's extensive coastline of 99,093 km. Spatial and temporal analyses reveal significant variations in Sea Level Anomaly (SLA) values, which can be utilized for the development of renewable energy projects. The conclusion of this research emphasizes the need for a deeper understanding of the dynamics of ocean currents and waves to maximize the utilization of renewable energy potential in Indonesia.
CRASH BOX DESIGN WITH METAL FOAM FILLING MADE VIA MELT ROUTE AND CALCIUM CARBONATE BLOWING AGENT Hartanto, David Satya; Choiron, M. Agus; Purnowidodo, Anindito; Ariadi, Yudhi
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 2 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.02.9

Abstract

The crashworthiness of daily passenger vehicles has been continuously developed to improve the safety of a passenger on collision. This study presents a simulation on thin-walled foam filled crash-box based on finite element methods to improve the current crash box design while also maintaining the usage of simple geometry in form of rectangular tube. This crash box is modeled as foam filled thin-walled structure that is intended to be mounted on the frontal side of car chassis. This simulation was carried out using frontal impact test, with an impactor speed of 10 m/s. The foam-filling of the crash-box is created in-house by the researcher, using calcium carbonate blowing agent on melt route process. By observing the area under the curve of the relationship between the force-reaction and the displacement, the energy absorption can be calculated. The simulation also reveals the deformation patterns on the crash box. The result of the simulation shows that foam-filling on thin-walled crash box improves the deformation behavior of the crash box and subsequently improving the energy absorption figure and its crushing force efficiency.
APPLICATION of ENTROPY MULTICRITERIA METHOD FOR PARAMETRIC CLASSIFICATION of THE WIRE ELECTRICAL DISCHARGE MACHINING PROCESS USING NITINOL-60 SHAPE MEMORY ALLOY Ogunmola, Bayo Yemisi; Onitiri, Modupe Adeoye; Alozie, Nehemiah Sabinus; Oluwo, Adeyinka; Okwo, Jeremiah Ugo; Rajan, John; Jose, Swaminathan; Oke, Sunday Ayoola; Aderibigbe, Samuel Bolaji
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 2 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.02.10

Abstract

Nitinol-60 shape memory alloy (SMA) is known for its outstanding super elasticity non-magnetic properties, vibration absorption, high hardness and long fatigue life, among others. However, its conventional processing is difficult, complex and time-consuming, making the wire electrical discharge machining (WEDM) a viable option. Additionally, the choice of multicriteria methods is growing drastically in machining for economic and planning advantages. This paper presents an L15 orthogonal array analysis of the WEDM process parameters for nitinol-60 using the entropy method. The principal parameters are the gap voltage, dielectric flow rate and duty factor. However, the responses are surface crack density, recasting of larger thickness, and cutting rate. The procedure starts with the design of an experimental matrix with fifteen experiments. Then the parameters and responses are as beneficial and non-beneficial while their normalization is made. The entropy method is applied and the results are reported for the first time in the WEDM process of nitinol-60. to ensure optimum performance of the WEDM process, priority should be given in descending order to duty factor, dielectric flow rate and gap voltage at 0.1398, 0.1325 and 0.1117, respectively. to prioritize the responses, the average peak-to-valley height, maximum peak-to-valley heights and the cutting rate obtained the first, second and third positions, respectively. The findings presented in this work highlight the importance of nitinol-60 SMA as a promising candidate for medical devices and aerospace components. These are of public interest including neurovascular, dentistry, orthopedic, endoscopy and vascular intervention. It therefore offers new insights into planning in healthcare and wellbeing.
CHARACTERISTICS OF AGAVE SISALANA NATURAL FIBER COMPOSITES WITH SEAWATER TREATMENT Raviko, Johansyah; Purnowidodo, Anindito; Wahyudi, Slamet; Azmi, Muhammad
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 2 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.02.11

Abstract

This study focuses on the more environmentally friendly treatment (seawater treatment) than classical chemical treatments (natural fibers and a new trend of developing epoxy resin matrix composites with natural Agave Sisalana fiber reinforcement). The current study investigated natural agave sisalana fiber soaked in seawater for three days and seven days to increase the adhesion of the fiber-matrix interface on the epoxy resin composite with natural agave sisalana fiber. The best single fiber tensile strength test was caught on the 7-day treatment sample, where the loss was 898.49 MPa, and the modulus of elasticity was 1418.42 MPa. From the results of the SF composite tensile strength test, the highest tensile strength value was obtained in the 7-day seawater treatment sample of 103,734 MPa, the elongation at break value was 23,954 MPa, and the modulus of elasticity was 4,576 MPa. The data revealed that samples with the given treatment had higher mechanical properties than those without treatment. The loss of impurities in the sisal fiber after seawater treatment leads to a better bond between the fibers and the matrix, where the high value of tensile strength was influenced by the interface bond between the sisal fiber and the strong epoxy resin matrix acting as a load support. Furthermore, the macro photo data reveals that the results of the tensile testing fracture experienced a ductile fracture because it was marked that the fiber pull-out mechanism dominated in each specimen, piloting the reinforced sisal fiber composites experience slow cracking. In conclusion, seawater treatment may strengthen the fibers' mechanical surface properties by removing the outer layers of hemicellulose, cellulose, and lignin, causing the fiber-matrix interface to increase, leading to higher direct impact and tensile strength than composites with no seawater treatment.
INVESTIGATION OF SLEEVE BEARING FAILURES IN API 610 BB3 PUMPS FOR WATER INJECTION APPLICATION Machfud, Adam Aliyya; Kriswantoro, Yosep Joko; Nurrahman, Ardhi Febrian; Priambudi, Aris
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 2 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.02.12

Abstract

The reliability of multistage centrifugal pumps, particularly API 610 BB3 types, is critical in water injection systems commonly used in oil and gas operations. This study aims to identify and analyze the dominant failure modes in sleeve bearings used in water injection pump applications, considering comprehensively existing design, operational, and maintenance aspects. The investigation covers analysis using not only equipment condition data (vibration, temperature, oil analysis) but also material examinations, such as optical microscopy, SEM (Scanning Electron Microscope), and EDS (Energy Dispersive Spectroscopy). The results indicate that the root cause of the sleeve bearing failure is lubrication failure, which is attributed to several contributing factors, including improper ISO Code settings for oil analysis and inadequate bearing temperature protection settings. Low-effort and high-impact improvements are proposed, including changing the lube oil type from mineral-based to synthetic-based, using lube oil with higher viscosity, adjusting the ISO Code for oil analysis, and modifying the bearing temperature protection settings. The results of this study are expected to provide a deeper understanding of the sleeve bearing failure mechanism and its implications for equipment reliability, serving as the basis for developing more effective mitigation strategies.
Evaluation of Layout Design, Operation and Maintenance of Multi Automated Systems Guided Vehicles (AGV): A Review Suparjon, Suparjon
International Journal of Mechanical Engineering Technologies and Applications Vol. 3 No. 1 (2022)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2022.003.01.1

Abstract

Automated Guided Vehicle (AGV) is a type of vehicle that is driverless and is programmed to run on a predetermined route to transfer loads. Thus, the aim of this work is to improve the layout, operation, and maintenance. the results of these objectives explain that many are used in AGV systems for modern material handling due to the ability of this technology to increase the efficiency and productivity of the system and reduce human labor. Flow paths or layouts are fixed guided routes where vehicles can travel to various points of collection and delivery of cargo. Avoiding collision and deadlock situations, traffic management is required. To prevent physical collisions and obstacles in the path, sensors must be installed AGV. Automatic vehicle maintenance, we must remain vigilant when the AGV is operating, therefore we are very wary of accidents, as explained above that autonomous car will be programmed to follow the flow path rules and reduce the number of accidents but apply to the safety of the driver and look for situations which is less dangerous. After analyzing the situation and doing so choose the best option. Thus, the maintenance of the AGV must be intensive so that automotive vehicle accidents cannot occur again.
The Effect of Sand Blasting on Shear Stress of Fiberglass - Shorea spp. Composite Widodo, Teguh Dwi; Raharjo, Rudianto; Risonarta, Victor Yuardi; Bintarto, Redi; Kusumaningsih, Haslinda; Saputra, Muhamad Hendra
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 1 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/mechta.2020.001.01.1

Abstract

A coating is widely applied to protect base material during contact with surrounding. One important application in engineering is to protect a boat hull. The coating is applied to boat hull to prevent a decrease of mechanical properties of base materials particularly with corrosive seawater. Composite coating is applied since the composite coating provides better protection compared to paint coating. Additionally, sandblasting prior to composite coating is worked out to improve the mechanical properties of the coating. This work investigated the influence of the projection angle of the sandblasting process on the shear strength of the coated surface. The projection angle of sandblasting was varied from 30 to 90 °. The result shows that a higher projection angle decreases the strain strength of the coating surface. The experiment work showed that the shear strength of 30°, 45 °, 60 °, and 90°projection angle are 1.02, 0.66, 0.38, and 0.24 MPa, respectively.
The Influence of Homogenization on Corrosion Rate of Zinc as Sacrificial Anode for API 5L X65 Steel Fitriani, Siti Noor; Setyarini, Putu Hadi; Risonarta, Victor Yuardi
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 1 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/mechta.2020.001.01.2

Abstract

Corrosion is a material degradation due to electrochemical reactions involving electrical current. Corrosion cannot be avoided but it can be managed. This work investigated the influence of holding time and temperature variation for the homogenization process of Zinc (Zn) alloy. This zinc alloy is used as a sacrificial anode to decrease the corrosion rate of API 5L X65 steel. The investigation was performed with 3 varied holding times of 2, 4 and 6 hours of homogenization process while the temperature was varied at 150, 250 and 350ºC. After that, a zinc alloy with a size of 40mm x 0.44 mm x 10 mm was connected to a cathode.  Together with steel, both metals formed galvanic cells in this study. The metal with lower electricity potential became the anode and corroded. On the other hand, metal with higher electrical potential became the cathode and did not corrode. The lowest corrosion rate was obtained for homogenization at 150ºC and 2 hours holding time. At this condition, the corrosion rate decreased by 38.36%. This occurred since higher temperatures and longer holding time of Zinc homogenization resulted in bigger and rougher grains.
Influence of Surface Roughness and Paint Coating on Corrosion Rate Akbar, Dekrit H.; Purnami, Purnami; Budio, Sugeng Prayitno
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 1 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/mechta.2020.001.01.3

Abstract

The technology of paint and its application develop fast, driven by the increasing cost of energy, raw material and labors. In this study, paint was used as a corrosion inhibitor on the surface of API 5L while saltwater is used as the corrosive media. The coating was varied for three different cases, i.e. primary coating only, primary and color coating as well as primary, color and glossy coating. Meanwhile, surface roughness was varied for 0.6, 0.7 and 0.8 μm. It is concluded that surface roughness and coating influence the corrosion rate. Smoother the surface and more coating layers lower the corrosion rate. Based on the study on API 5L steel, the lowest corrosion rate was obtained at 0.6 μm with 3 paint coatings (primary, color paint and clear/gloss)
Effect of SCADA Implementation to Productivity in Ammunition Industry: A Review Sanjiwani, Yudistira; Risonata, Victor Yuardi; Afif, Ilham; Subarkah, Salim
International Journal of Mechanical Engineering Technologies and Applications Vol. 1 No. 2 (2020)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2020.001.02.1

Abstract

Within the last years, global industries are hyping over Industry Revolution 4.0. Utilizing the computer science combining with the mechatronics, each industry strives to increase productivity and efficiency. Of those industries is the ammunition industry. Regarded as one of the strategic industry of a nation, the ammunition industry needs to quickly adapt to the technological advance, the beginning of a new era. The old-schooled method in production control is outdated and needs to be replaced. Supervisory control and data acquisition (SCADA), one of the newest method for production control, has been developed for several years. The exact form of implementation is however yet fixed. It has to be specifically developed for each industry, i.e. the ammunition industry in this case. With the rapidly growing information technology and science, the ammunition industry is expected to be able to implement the best suited control system to increase and to optimize its production capacity.

Page 14 of 25 | Total Record : 244

 12   13   14   15   16 

Filter by Year

2020 2026


Reset
Filter By Issues
All Issue Vol. 7 No. 1 (2026): January - June Vol. 6 No. 2 (2025) Vol. 6 No. 1 (2025) Vol. 5 No. 2 (2024) Vol. 5 No. 1 (2024) Vol. 4 No. 2 (2023) Vol. 4 No. 1 (2023) Vol. 3 No. 2 (2022) Vol. 3 No. 1 (2022) Vol. 2 No. 2 (2021) Vol. 2 No. 1 (2021) Vol. 1 No. 2 (2020) Vol. 1 No. 1 (2020) More Issue