cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Anita Susilawati
Contact Email
anitasusilawati@lecturer.unri.ac.id
Phone
-
Journal Mail Official
jomase@isomase.org
Editorial Address
Teknik Mesin, Fakultas Teknik, Universitas Riau Kampus Bina Widya, Jl. HR. Soebrantas Km. 12,5 Panam, Pekanbaru 28293, Riau, INDONESIA
Location
Kota pekanbaru,
Riau
INDONESIA
Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Published by Universitas Riau
ISSN : 23547065     EISSN : 25276085     DOI : http://dx.doi.org/10.36842/jomase
Core Subject : Science, Engineering,
Aerospace Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering
The mission of the JOMAse is to foster free and extremely rapid scientific communication across the world wide community. The JOMAse is an original and peer review article that advance the understanding of both science and engineering and its application to the solution of challenges and complex problems in naval architecture, offshore and subsea, machines and control system, aeronautics, satellite and aerospace. The JOMAse is particularly concerned with the demonstration of applied science and innovative engineering solutions to solve specific industrial problems. Articles preferably should focus on the following aspects: new methods or theory or philosophy innovative practices, critical survey or analysis of a subject or topic, new or latest research findings and critical review or evaluation of new discoveries. Scope The JOMAse welcomes manuscript submissions from academicians, scholars, and practitioners for possible publication from all over the world that meets the general criteria of significance and educational excellence. The scope of the journal is as follows: Naval Architecture and Offshore Engineering Computational fluid dynamic and Experimental Mechanics Hydrodynamic and Aerodynamics Noise and Vibration Aeronautics and Satellite Engineering Materials and Corrosion Fluids Mechanics Engineering Stress and Structural Modeling Manufacturing and Industrial Engineering Robotics and Control Heat Transfer and Thermal Power Plant Engineering Risk and Reliability Case studies and Critical reviews
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 329 Documents
 22   23   24   25   26 
Delivery Issues in Traditional Ship Production Haron, Surhan Jamil; Munirah, Siti; Junaidi, Abd Khair
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 17 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v17i1.456

Abstract

A study regarding the factor contribute toward the delivery issues of traditional ship production process in Malaysia was conducted with aims to identify the factor contributing to the issues and also offer some suggestion and recommendation to overcome the issues. This study was conducted based on literature material available from many resources such as the Malaysia timber council, journal publication, reports, magazines and other. The factors derived that can contribute to delivery of traditional ship building product are the issues of availability of the raw material, law that exist to protect the material and its trade, the production process, the issues of the worker’s skill and availability, the diminishing number of master shipbuilder and the payment methods. Some suggestion in overcoming the issues also been proposed like special permit to traditional shipbuilder for easier material obtain and the need of documentation of the traditional ship production process itself so that the actual problem existed can be further examine and solve.
Non-Linear Inversion Method to Derive Bathymetry from Video Images Zikra, Muhammad; Hashimoto, Noriaki; Suzuki, Kojiro; Plant, Nathaniel G.
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 17 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v17i1.455

Abstract

This study investigates the capabilities of optical remote sensing to monitor bathymetry in nearshore area using video images. The technique is designed to extract wave number components based on variation of intensity of brightness at each pixel in the images using cross-spectral correlation approach. This approach is based on pixel array analysis that utilizes a nonlinear inverse method 'Levenberg-Marquardt’. The technique is applied to the data collected at Hasaki beach in Japan from August to December 2006. The results indicate that the cross-spectral correlation approach have the capability to derive wave number estimate from time series data of video images with small rms errors (0.0342-0.0421). Also, the estimate of nearshore bathymetry is proved reasonable accurate near shoreline and breaking area where the differences between estimated and survey water depth are less than 10-30 cm.
Reviewed on Combustion Modelling of Marine Spark-Ignition Engines Nekooei, Mohammad Javad; Koto, Jaswar; Priyanto, A.; Dehghani, Zahra
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 17 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v17i1.454

Abstract

This research reviewed combustion modelling of marine sparkignition engine using mass fraction burned based on Wiebe function approach. In the paper, firstly, the cylindrical pressure is discussed and correlated function of engine operation condition. The cylinder pressure signal was constructed as a function of crank angle over an engine operational map. The parameters of the cylindrical pressure model were calibrated with s-curve matching techniques. The objectives of the research was to construct a combustion model on the cylindrical pressure suitable for control oriented model.
In-Place, Seismic and Fatigue Analysis of Offshore Platform for Life Extension Farisi, Muhammad Al-; Zikra, Muhammad
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 18 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v18i1.453

Abstract

This paper presents reassessment of existing offshore platform in the Ardjuna Field, Northwest of Java, Indonesia. The existing platform of B1C was installed in 1975 and owned by PHE ONWJ. The B1C platform is numerically evaluated for service life extension purposes until the next twenty years. The reassessment analyses focus on in-place analysis, seismic analysis and fatigue analysis. These analyses refer to recommended practice issued by American Petroleum Institute standard. The results indicated that the entire value of unity check for all members fulfill the requirements of API RP 2A - WSD. Analysis of fatigue computation showed that three joints have the fatigue life less than 59 years.
Theoretical Review on Prediction of Motion Response using Diffraction Potential and Morison Siow, C.L.; Koto, J.; Yasukawa, H.; Matsuda, A.; Terada, D.; Guedes Soares, C.
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 18 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v18i1.452

Abstract

This paper reviewed the capability of the proposed diffraction potential theory with Morison Drag term to predict the Round Shape FPSO heave motion response. From both the self-developed programming code and ANSYS AQWA software, it can be observed that the diffraction potential theory is over predicting the Round Shape FPSO heave motion response when the motion is dominated by damping. In this study, Morison equation drag correction method is applied to adjust the motion response predicted by diffraction potential theory. This paper briefly present the procedure to integrate the Morison equation drag term correction method with the diffraction potential theory and then, the proposed numerical method was applied to simulate the Round Shape FPSO heave motion response. From the comparison, it can be concluded that Morison equation drag correction method is able to estimate the FPSO heave response in the damping dominated region and provides more reasonable motion tendency compare to the diffraction potential theory without consider the drag effect in the calculation.
Slamming Analysis on a 35,000 Ton Class of Drillship Ahmad, Mahasin M.; Djatmiko, Eko B.; Handayanu, Handayanu
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 18 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v18i1.451

Abstract

Slamming is a phenomenon that occurs on floating structures. Drillship as floating structures have slamming when moving at a certain speed which resulted in the movement of relative vertical bow that exceeded full of water of the bow. This paper was performed on the drillship 35000 tons with variants of speed is 7 knots, 12 knots, 13 knots and 14 knots. The first stage taken was the design of the drillship structures by using Maxsurf in order to get lines plan. After the offset data of drillship has been obtained, modeling followed by Hydrostar to get the heave and pitch motion RAO’s from head seas. The result of RAO is used to analyze the relative vertical motion of the bow in the form of RAO as well. That result is used to analysis of structural response by multiplying the wave spectra ITTC/ISSC. From these calculations will be known slamming parameters that can generate the probabilities, intensity and pressure of slamming on the drillship 35000 tons. Probabilities, intensities and pressure of slamming, the maximum occures while the drillship moving on 14 knot of speed, ie. each of 0.483 times, 124.451 times/hour and 492,232 kPa at 15 m of significant wave height.
Production Process of Fiberglass Fast Interceptor Boat in Malaysia Yaacob, Amirrudin; Zakaria, Zainul Azhar; Zarina, M.K Puteri; Koto, Jaswar; Kidd, Peter
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 19 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v19i1.450

Abstract

The conventional fiberglass boatbuilding is still widely practiced in Malaysia compared to the modern fiberglass boatbuilding. Every fiberglass boat builder has different methods or processes for the construction of fiberglass boats. The production process and procedure of conventional fiberglass boatbuilding is far from the influence of advance technology. This study presents the production process for modern fiberglass boatbuilding in Malaysia which uses Resin Infusion Method as the latest method in composite technology and applied on Fiberglass Fast Interceptor Boat. The study was conducted in UES International Sdn Bhd in Malacca, Malaysia.
Effect of Internal Grids Structure on the Numerical Prediction of the Free Surface Flow around Wigley Hull Form Ahmed, Yasser M.; Yaakob, O. B; Elbatran, A. H.; Abdel-Hamed, Mohamed Walid
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 19 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v19i1.449

Abstract

Two grids with different internal mesh structure have been used to predict the incompressible free surface flow around the Wigley hull form at Fr= 0.2 and 0.267. The finite volume RANSE code Ansys CFX, which using the two-phase Eulerian-Eulerian fluid approach has been used to perform the different numerical simulations. The Shear Stress Transport (SST) turbulence models have been used in the RANSE code. Ansys Meshing and ICEM CFD grid generators have been used to generate the two unstructured tetrahedral grids for this study. The results compare well with the available experimental data for the hull resistance at the two speeds. In addition, wave patterns, pressure contours and the time required for the numerical simulations of the grids have been compared in this study.
Experimental Study on Effect of Mooring on Motion Response of Rounded-Shape FPSO Model Siow, C. L.; Koto, J.; Yasukawa, H.; Matsuda, A.; Terada, D.; Guedes Soares, C.; Incecik, A.; Pauzi, M.; Maimun, A.
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 19 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v19i1.448

Abstract

This paper discusses the motions response of moored rounded-shape FPSO model due to the wave effect. The research analyzed the possibility of wave motion response of rounded-shape FPSO model affected by different mooring systems. Experiment of a scale FPSO model of 1:112 was conducted in basin tank at the National Research Institute of Fisheries Engineering, Japan. In the experiment, the FPSO model was firstly tested by attaching model scale of Catenary mooring lines to rounded-shape FPSO model. Then the experiment was repeated by attaching model scale of Taut mooring lines to the rounded-shape FPSO model. Comparing results obtained using Taut and Catenary mooring lines in regular wave were presented. This research concluded that the mooring systems would not give significant effect to wave frequency motion response of the rounded-shape FPSO.
Intelligence Fuzzy Logic System to Diagnosis and Control Spark Ignition Engines Nekooei, Mohammad Javad; Pauzi, M.
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 20 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v20i1.447

Abstract

Air pollution is one of the important challenging issues these days that researchers have been trying to maintain it in a normal range. The emissions of vehicle engine exhausts are responsible for fifty percent of air pollution. There is a tendency to develop of engine control which works in a simple way. in this paper a simple fuzzy logic (FL) control has been developed which is used for defining engine system faults and control and maintain them in a normal range without use any complicated mathematical equation and any fault sensor.

Page 24 of 33 | Total Record : 329

 22   23   24   25   26 

Filter by Year

2013 2025


Reset
Filter By Issues
All Issue Vol 69 No 3 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 69 No 2 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 69 No 1 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 68 No 3 (2024): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 68 No 2 (2024): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 68 No 1 (2024): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 67 No 3 (2023): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 67 No 2 (2023): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 67 No 1 (2023): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 66 No 3 (2022): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 66 No 2 (2022): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 66 No 1 (2022): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 65 No 3 (2021): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 65 No 2 (2021): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 65 No 1 (2021): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 64 No 3 (2020): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 64 No 2 (2020): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 64 No 1 (2020): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 63 No 3 (2019): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 63 No 2 (2019): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 63 No 1 (2019): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 62 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 61 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 60 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 59 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 58 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 57 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 56 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 55 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 54 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 53 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 52 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 51 No 1 (2018): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 50 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 49 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 48 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 47 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 46 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 45 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 44 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 43 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 42 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 41 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 40 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 39 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 38 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 37 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 36 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 35 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 34 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 33 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 32 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 31 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 30 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 29 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 28 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 27 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 26 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 25 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 24 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 23 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 22 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 21 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 20 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 19 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 18 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 17 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 16 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 15 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 14 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 13 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 12 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 11 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 10 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 9 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 8 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 7 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 6 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 5 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 4 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 3 No 1 (2014): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 2 No 1 (2013): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Vol 1 No 1 (2013): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) More Issue