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Journal of Mechanical Science and Engineering
Published by Universitas Sriwijaya
ISSN : -     EISSN : 23549467     DOI : -
Core Subject : Engineering,
Mechanical Engineering
Editors receive manuscripts in Mechanical Engineering from various academics, researchers and industry practitioners. The authors in the Journal of Mechanical Science and Engineering derived from various Higher Education institutions and national research institutes. Editorial Board of Journal of Mechanical stated that online media is both a scientific and specialized publishing scientific articles on original scientific research results (original) and review the field of mechanical engineering science. Publication covering area of research and review papers are as follows but not limitted to: Thermo-Fluid, ,Energy, Machine Design, Manufacture Engineering, Materials Engineering, etc
Arjuna Subject : -
Articles 40 Documents
 1   2   3   4 
THE SOLAR RENEWABLE ENERGY SYSTEM STUDY WITH A CAPACITY OF 1300 W UTILITIZING POLYCRYSTALLINE PHOTOVOLTAIC Armin Sofijan
Journal of Mechanical Science and Engineering Vol 6, No 1 (2019): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

Abstract—Solar energy is one of the alternative energy that is environmentally friendly and cheap raw materials and available throughout the year as a substitute for conventional energy whose raw materials are getting thinner and have a bad impact on the environment such as air pollution, noise and hazardous waste for the environment over a long period of time, solar energy has great potential as an independent solar power plant, which offers solutions to provide electricity to meet electricity needs, especially in areas not yet covered by the electricity grid of the National Electric Company. The 1300 W solar power plant is planned to use polycrystalline solar panels with a capacity 100 WP, combined with battery components and inverters, it can generate AC current for daily electricity needs. The greater the electrical load, the faster the battery life. This research shows that it takes 60 polycrystalline solar panels for 12 hours, 26 Solar Chargers 15 A, 9 batteries with a capacity of 150 Ah, and 15 Inverters 1300 W 
Design of Identification System for Red and White Meranti Using Colours Detection Method Firmansyah Burlian
Journal of Mechanical Science and Engineering Vol 3, No 1 (2016): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

Development technology of computer programs caused to produce novelty from the development of these technologies. Besides to education, the development of technology can be utilized in working, even all. Digital image processing is a part the development of it. This research develop of identification system of red and white meranti by using color detection method. The program used in this research is a Matlab program. In this research, database made by 25 pieces red meranti and 25 pieces white meranti. Image of woods captured side by side using webcams. Then taking the values of primary colors RGB (red, green, blue) to be used as database. Identification system will test 5 times for every red and white meranti with different positions. Success rate of identification system red and white meranti using color detection method is 90.83%.
THE EFFECT OF STEERING BLADE ANGLES OF HELICAL TURBINE FOR POWER GENERATION IN IRIGATION DAM OF Riman Sipahutar; Niharman Niharman
Journal of Mechanical Science and Engineering Vol 2, No 1 (2015): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

The Gorlov vertical axis water turbine is suitable to harness the water flow in the creation of kinetic energy for the irigation dam. The turbine tested in this study was ther Gorlov helical turbine blade with steering angles of 00, 300, 450 and 600 turbine diameter (d) of 0.30 m, height (h) of 0.50 m and the NACA 0020 profile. The testing was conducted on the irigation dam of Seluma Bengkulu. The water flow showed in the velocity (Uair) of  0.85 m / s and a round (n) of 110 rpm. The results were achieved by setting the blades in steering torque coefficient (Ct) of 0.309 are turbine efficiency (ηt) of 28.5% and a power turbine (Pt) of 13.699 Watts.
Distance Effect Between Four Elliptical Pipes With Ratio Of 0,8 On The Pressure Arround Pipes Astuty Hadjar
Journal of Mechanical Science and Engineering Vol 4, No 1 (2017): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

Tube is a component of a heat exchanger tube is usually in the form of a small circle section pipe. But do not rule out the possibility of tube using a pipe that is not circle section  for example an elliptical section  to aims pressure as small as possible, because of the pressure resistor is small, the resulting pressure drop means smaller. Pipes used are a modification AW wavin pipe with an outside diameter of 6 cm into the elliptical section pipe with a ratio of 0.8. Tests carried out in Test engine Subsonic Wind Tunnel Section 40, two pipe by measuring angles and two more be used to measure variations in the distance between the pipes. From the test results obtained by the value of the pressure difference (ΔP) and temperature (°C), the value obtained is inserted into the equation calculation in order to get the coefficient of pressure (CP) getting bigger, but the speed (U) and the pressure coefficient resistor (CDP) smaller as increasing the distance between the pipes.
Analysis of Residual Stress And Strain on The Formation of Workpiece Based Ansys 12.1 Sonny Prayogi; Zulkarnain .
Journal of Mechanical Science and Engineering Vol 2, No 2 (2015): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

Machining process to produce plastic deformation on the workpiece. Plastic deformation during the machining process are formed by friction against the cutting tools to workpieces generate furious. During the deformation process appearance residual stress on the surface which can affect the fatigue resistance, fracture strength, and corrosion. Failure in the component structure is not only due to external forces, residual stress is an important parameter in this case. The purpose of this study to analyze the residual stresses that occur on the workpiece from turning process. In the analysis performed using the Finite Element Method (FEM) with the software to obtain the desired results by entering input data including modeling of cutting tools and the workpiece. The result is a visual overview of the residual stress in the workpiece and areas of plastically deformed as a result of feeding from the cutting tools motion. 2D visual modeling using the software Ansys 12.1 with three comparison rake angle 50, 100.150 to determine the result of the residual stress on the surface of the workpiece.
The Carburizing Process of Low Carbon Steel with Charcoal Media Yahya Yahya; Nukman Nukman; Hendri Chandra
Journal of Mechanical Science and Engineering Vol 1, No 1 (2013): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

Ringkasan Proses karburisasi dilakukan untuk meningkatkan mutu kekuatas suatu baja karbon rendah dengan biaya yang rendah. Material yang digunakan adalah jenis baja karbon rendah dengan nilai karbon 0,25. Proses karburisasi pada baja karbon rendah dilakukan pada temperatur 900oC dengan holding time 90 menit menggunakan media arang tulang kambing dan tempurung kelapa. Penggunaan karburiser arang tulang kambing menghasilkan nilai kekerasannya lebih tinggi dari baja karbon dengan media arang tempurung kelapa. Hasil pengujian nilai karbon baja setelah proses karburisasi dengan tempurung kelapa adalah 0,423 sedangkan setelah proses karburisasi dengan tulang kambing nilai karbon nya hanya 1,593. Kata Kunci : Proses Karburisasi, Uji kekerasan, Uji Tarik, Uji Impak, dan struktur mikro. Abstract Carburizing process is carried out to improve the power quality of a low carbon steel with a low cost.The material used is a type of low carbon steel with a carbon value of 0.25. Carburizing process on medium carbon steel at a temperature of 900°C with a holding time of 90 minutes using goat bone and coconut shel char medial. The use of goat  bone charcoal karburiser produces higher hardness values of carbon steel with coconut shell charcoal media. Results of testing the value of carbon steel after carburizing processes with coconut shell was 0,423 whereas after carburizing process with goat bone carbon value of only 1,593 Keywords: carburizing process, hardness test, Tensile Test, Impact Test, and microstructure.
APPLICATION OF PRODUCT QUALITY ASSURANCE IN MANUFACTURE, CASE STUDY IN MECHANICAL ENGINEERING DEPARTMENT, SRIWIJAYA UNIVERSITY Amrillah Nugrasyah; Amrifan Saladin Mohruni
Journal of Mechanical Science and Engineering Vol 6, No 1 (2019): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

Product Quality Assurance (PQA) is a standard procedure to ensure the product quality in practical manufacturing engineering. In this study the PQA-procedure will be applied for academic assurance in Mechanical Engineering Department, Sriwijaya University. The objective of this study is to generate web based Academic Quality Assurance (AQA) in the Department, which accomplices with National Accreditation Agency for Higher Education (BAN-PT). The development of web based AQA was carried out using an open source PHP, MySQL, CSS and REST API to ensure the web integration with the existing website of Sriwijaya University. The results show that this application can overcome the existing problems when the Academic Quality Assurance was conducted manually. The AQA web can work smoothly
Design Of Spring Valve Cylinder Head Opening Tools Firmansyah Burlian
Journal of Mechanical Science and Engineering Vol 3, No 2 (2016): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

During spring valve release process of the car cylinder head, workshops experiencing difficulties due to the released manually. The release is done by hitting the outside of the valve spring retainer which can cause damage to the valve spring retainer and also may reduce the stiffness the valve spring. It is designed tools for release spring valve on the cylinder head car. In this paper is conducted for the initial phase to design a tool, and then carried out the calculation of the force required to remove the workpiece spring valve. Tools will be made in accordance with the calculations have been done then proceed with testing tools. Once the tool has been tested, the evaluation and study of literature that will be used for the selection of materials. From the data calculation, the force required to depress the valve spring is 1942.4 N and material using the steel SC-42. Mechanism of action of the tool using a lever or a lever in order to facilitate suppression valve springs.
EFFECT OF THICKNESS LAYER OF KENAF FIBRE REINFOECED FIBRE GLASS, AGAINST IMPACT OF HYBRID COMPOSITE SANDWICH WITH CORE SENGON Agung - Mataram; Narwi Panggar Besi
Journal of Mechanical Science and Engineering Vol 6, No 1 (2019): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

The purpose of this research is to know the impact strength of composite structures of sengon laut sawdust. Experimental results show that the impact toughness of sandwich composite will increase as the thickness of composite sandwich skin increases. The impact failure is due mostly to the shear failure of the core. Brittle specimen failure occurs on the sandwich composites structured with skin and core manufactured with the same thickness of 5 mm. This brittle sandwich composite has a flat cross section on both sides of the fault. The shear failure of the cores occurs in samples with 2 mm thick, 3 mm, 4 mm thick, and 10 mm thick core. In some samples, the shear failure of the cores is accompanied by cracks on the core so that the sandwich composite is broken in several parts. The highest value of absorption energy and the highest impact strength is found on thick composite sandwich variation of 10 mm thick with 4 mm thickness of 2,7860 J and 0,01032 J/mm2.
THE BENEFIT OF USING SMART MANUFACTURING WITH ANALYSIS OF DIGITAL PRODUCT DEVELOPMENT: A REVIEW Mareta Ramadhanis Suherman
Journal of Mechanical Science and Engineering Vol 7, No 1 (2020): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

Application product development and manufacturing using computer-aided technologies and what has already been implemented successfully in some segments of large-scale industry and suppliers. This study aimed to established a general understanding of the development of digital product development and manufacturing. The method of this study is a review of smart manufacturability analysis for digital product development. This study described product development is supported by CAD CAM and CAE programs from design and development with Cloud-Based Design with Manufacturing (CBDM). The results  from this journal review are to know the factors that influence the results of 3D printing and how to fix these problems. The problem is by using cloud base there are still problems when translating digital forms into physical forms in the form of STL. or obj in this case using FDM (Fused Deposition Modeling). can be improved by using 3D SLA printer technology because SLA (Stereolithography) can produce good print results and complicated designs

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