Garuda - Garba Rujukan Digital

All

Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)

jomase
Website

Published by Universitas Riau

ISSN : 23547065 EISSN : 25276085 DOI : http://dx.doi.org/10.36842/jomase

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

19 20 21 22 23

Lumber Drying Model in Traditional Shipbuilding Patrick, Bayo-Philip; Koto, Jaswar; Siow, C.L
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 9 No 1 (2014): 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.v9i1.489

Indonesian traditional ship is a product of an indigenous technology developed long before the advent of western culture along the Coast of Sulawesi Island. The ships are built traditionally in both method and equipment without any sketches or calculations. Advancement in science and technology, and abundant information available on the World Wide Web has caused unprecedented changes in many areas of human Endeavour. However, Indonesian traditional ship builders have not taken full advantage of available technology and information particularly in the preparation of lumber which remains one of the critical and most unpredictable stages in construction. This study addressed the issue of delays which is always one of the critical issues confronting the construction of traditional ship in Kepulauan Riau. A low cost air drying model was proposed. The model was tested by comparing the air drying time of lumber in two specific conditions. Four different sample s of lumber were used to test the efficiency of both the air drying model and the natural air drying technique. In conclusion, the proposed model having applied and compared with the traditional method clearly show a better method.

A Preliminary Study on Use of Candlenut Shell as a Renewable Source of Energy, Min Indonesia Tambunan, B H.; Saptoadi, H.; Syamsiro, M.
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 9 No 1 (2014): 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.v9i1.488

The decreased world fossil energy reserve, in general, and specifically in Indonesia requires us to find alternative energy resources. Biomass is one of alternative energies with great potential in Indonesia. One of it is Candlenuts Shell (CNS) as the waste of candlenuts fruit, with the production 89,155 tons/year will produce 207,958 tons shell/year. Candlenut shells are made into briquette with particle size < 1 mm, and then burnt in combustion test instrument with variations raw material composition of biomass and biomass charcoal. Mass reduction of each variable is measured using digital scale include RS232 that is connected to computer, burning gas temperature by using thermocouple. In terms of burning rate, generated energy and gas temperature the best raw material composition is 75% of biomass raw material and 25% of biomass charcoal.

Experimental Investigation of Motion and Wave Induced Forced on Semi-Submersible in Regular Wave Khairuddin, N.M.; Pauzi, Mohamad
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 9 No 1 (2014): 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.v9i1.487

For the design of safe and economic offshore structure the knowledge of the wave environment and related wave-structure interactions is required. In general, frequency domain analysis has been regarded as an adequate tool for the assessment of motion and loads which are needed to derive the stress and hydrodynamics forces as well as operational limitations. For investigating the behavior of response to specific sea conditions, this research analyzes the behavior of the response due to motion and wave forces as well as hydrodynamics with focus on a type square column. The frequency domain investigation has used to provide the response behaviors on the wetted body of the semi-submersible in regular waves. For investigation,, the selected sea condition for regular wave is generated in a physical wave tank, and the behavior of the response on the semi-submersible is evaluated at model scale. Equation of motion was formulated to evaluate the added mass, dampi ng and stiffness at every frequency step. In frequency domain analysis, the hydrodynamics responses were obtained.

Manufacturing of Indonesian Wooden Traditional Ships Nofrizal, Nofrizal
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 10 No 1 (2014): 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.v10i1.485

Traditional ship-building is still widely practiced in Indonesia. Every province and regions have different characteristics in the design and production process of the traditional ships. The production process and procedure of traditional ship is far from the influence of advance technology. This study presents traditional shipbuilding process in the Kepulauan Riau, Indonesia. Survey three traditional shipbuilders in Bintan island, Mana Island, and Kelong island are carried out to get the production process by interviewing master and taking photo for documentation as case study. It is found that strip plank method with both fire and pressing techniques is used in production traditional ship in Kepulauan Riau, Indonesia. L-Joint technique is applied between keel-stem frame and T-joint technique between keel-stern-post.

Quality Assurance and Control of Indonesian Wooden Ship Ucok, Zulkairnain; Junaidi, Abd Khair
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 10 No 1 (2014): 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.v10i1.482

Demand for traditional ship in Indonesia is very high, because the ship is used of fishermen for catching fish as a livelihood. Shipbuilders as manufactures play an important element in building safety and good traditional wooden ships. In the production process, the shipbuilders must be has proper quality control system, in order to match with the owner specification, regulation, and statutory. Therefore, this article discusses about quality control system in traditional ship production process. The research were conducted by direct survey to traditional shipbuilders in Kepulauan Riau-Indonesia by inspect some ships by visual eyes only. From the survey, it was found many discrepancies occur, such as the use of wood has many defects, knur, knot and cracks. In addition, the wood concatenation process is not perfect, which can cause leakage. From the study, the shipbuilders should conduct quality control using other tools instead of visual technique only.

Simulation Modeling of Rounded-Shape Floating LNG Production and Storage Capacities Sanusi, Sanusi; Koto, Jaswar
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 10 No 1 (2014): 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.v10i1.481

Liquefied Natural Gas production processes involve many high profile control systems and equipments that costing a vast amount of investment. Any mistakes in the management decision to select the resources and equipments will cause serious problem aftermath and it will be difficult to meet the expected output. Production processes play very important rules in Liquefied Natural Gas Supply Chain and integration with well models (under water process), storage models, transportation model and receiving terminal models. The main focuses of this paper are to simulate production and storage capacities of Rounded-Shape Floating Liquefied Natural Gas by considering the capacity of every single process and utilization of equipments used and storage design. Simulation modeling can be used as controlling and decision making tool with associated factors such as Front-End Engineering Design rate, capacity of every process and storage design capacity.

Motion of Ship-Shaped Floating Liquefied Natural Gas Koto, Jaswar
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 11 No 1 (2014): 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.v11i1.480

Floating Liquefied Natural Gas (LNG) recently are new in the offshore platform and operation, since it is new so it is important to analyzed the stability and seakeeping of this vessel. This project are conducting stability assessment and seakeeping of Floating Liquefied Natural Gas (LNG) with initially it has to design the hull by referring the basic dimension of FPSO KIKEH that located at the 120 km northwest of Labuan Island which is the environmental location of this project. Hence this project are using Maxsurf for designing the hull, Hydromax to do stability assessment and Seakeeper for seakeeping analysis which is to generate wave spectrum and Response Amplitude Operator and hence to analyzed the motion characteristic of this vessel behavior in the research location.

A Chebyshev Polynomial on Torque and Thrust Coefficients of Mathematical Propeller Properties for a LNG Manoeuvring Simulation Sunarsih, Sunarsih; Priyanto, Agoes; Zamani, Mohd.; Izzudin, Nur
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 11 No 1 (2014): 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.v11i1.479

The estimated torque and thrust coefficients in four quadrants of marine propeller in a LNG manoeuvre control system is essential for the total performance of the vessel. A Chebyshev n-order polynomial that approximated a continuous function over the interval advance speed J [-1, 1] to calculate the torque and thrust coefficients as well as the shaft speed, is utilized to get the propeller properties. The Dynamical modeling and simulation of the marine propeller across the four quadrants are schemed and applied to the marine propeller B-4.58. The results are compared with both open water experiments and open water numerical tests using ANSYS-Fluent. The comparisons show that the chebyshev polynomial agreed well with both experiments and numerical tests and deduce that the polynomial provides a new practically approach estimation on torque and thrust coefficients in four quadrants of marine propeller for the vessel operations. Then the polynomial coefficients from Chebyshev n-order polynomial were used to express the mathematical model for the propeller thrust and torque characteristics and applied in the manoeuvring simulation programming.

CO2 Emission of Marine Transports in Batam - Singapore Rashidi, M.; Koto, Jaswar
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 11 No 1 (2014): 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.v11i1.478

Global warming and air pollution have become one of the important issues to the entire world community. Exhaust emissions from ships has been contributing to the health problems and environmental damage. This study focuses on the Strait of Malacca area because it is one of the world’s most congested straits used for international shipping where located on the border among three countries of Indonesia, Malaysia and Singapore. This study will predict CO2 emission from the marine transport. This is accomplished by developed a ship database in the Straits of Malacca by using the data which obtained from Automatic Identification System (AIS). From the database, MEET methodology is used to estimate the CO2 emission from ships.

The Perspective of Hydropower as Renewable Energy Behrouzi, Fatemeh; Abdul Malik, Adi Maimun; Ahmed, Yasser Mohamed; Nakisa, Mehdi
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 11 No 1 (2014): 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.v11i1.477

According to environmental impact of fossil fuel, growth population and demand for energy, it is compulsory to replace the fossil fuel with renewable energy. Hydropower as a renewable energy possesses a lot of potential to provide energy and it is essential to improve the kinetic energy devices to harness the energy of water.

Page 21 of 33 | Total Record : 329

19 20 21 22 23

Filter by Year

2013 2025

Filter By Issues

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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