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    Wyświetlanie 1-4 z 4
    Tytuł:
    Optimization of space under main deck on landing craft utility (LCU) ships to increase loading capacity
    Autorzy:
    Sugeng, S.
    Ridwan, M.
    Sulaiman, S.
    Khristyson, S. F.
    Powiązania:
    https://bibliotekanauki.pl/articles/2086303.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    landing craft utility
    loading capacity
    main deck
    void space
    space under main deck
    ship's stability
    maximum vehicle value
    ship's revenue
    Opis:
    With this optimization, the cargo will increase and the ship's revenue will also be more. The LCU ship that we know so far is a ship whose cargo is always above the main and the space under the main is unused Void Space. The purpose of this study is to determine the optimization value of the use of space under the main deck of the Landing Craft Utility (LCU) ships. method used in this study is a comparison with several previous ship approaches to produce evaluation results from the addition of loading space under the main deck and calculation of stability using computational software approximation. LCU design of under main deck space with a maximum vehicle value can accept a vertical moment of 2750 mm. With a structural strength of 13150 tons. A series of numerical experiments show that the proposed method can effectively produce a satisfactory LCU ship design optimization plan for ship owners.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 1; 99--103
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mechanical properties of small boat construction from HDPE blue drum scrap
    Autorzy:
    Ridwan, M.
    Sulaiman, S.
    Sugeng, S.
    Sarwoko, S.
    Nies, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2211980.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    small boat
    mechanical properties
    small boat construction
    High Density Polyethylene
    HDPE
    blue drum scrup
    laminate material
    jukung
    Opis:
    This paper discusses the mechanical properties of alternative wood substitute materials in the construction of small boats (jukung/cadik type). Jukung/cadik boat as a small fishing boat with a length overall 6,400 m, design beam 1,530 m, design draft 0.380 m, displacement 2,442 tons, wetted surface area 15.58 m2, the pressure acting on the submerged hull needed minimum material used has a strength of 0.0039 MPa or 3.92 kN/m2. The replacement material used is the HDPE blue drum scrap, which has an average thickness of 3mm, then made into two layers as laminate. The laminate process uses welding. The results of HDPE laminate material from these two layers are tested for tensile and compressive strength to meet the material strength requirements for small ship hulls. They were testing the strength of HDPE welded joints with type A1 specimens. Tension and compression of the two-layer laminate material was tested with specimens of type A2, A3, and A4. The tensile test results for A1 specimens obtained for welding tests are pretty good at 17.1 MPa, then the results of compression tests for specimen type A2, A3, and A4 on average are 23.36 MPa, which is greater than the need for the strength of the jukung/cadik hull.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 3; 573--578
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measurement of maximum vibration after the addition of the gorger construction to evaluate the side deck girder construction planning in the ship engine room
    Autorzy:
    Sugeng, S.
    Utomo, B.
    Said, S. D.
    Yusim, A. K.
    Windyandari, A.
    Khristyson, S. F.
    Afrizal, L.
    Jatmiko, A. B.
    Sanjiwo, Z. Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2172504.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    ship engine room
    side deck girder construction
    maximum vibration
    gorger construction, vibration
    ship vibration measurement
    side deck girder
    girder
    Opis:
    The greatest vibration occurs in the engine room, but all other parts of the ship also experience vibrations because it is propagating. Even though there are methods to reduce these vibrations such as engine beds, they can only reduce the damaging effects and cannot completely eliminate the vibrations themselves. The method used in this research is to compare the measurement of good vibrations in the conditions before the addition of construction and after the addition of construction for later comparison with numerical calculation data. The purpose of this study is to obtain the maximum vibration value in the conditions after the addition of the gorger construction before the addition of the side deck girder construction as a means of evaluating the side deck girder construction planning in the ship engine room ship 2000 DWT. The result consideration of adding construction becomes one or the alternative in providing reinforcement so that it can reduce the vibration that occurs. From analyze results after addition of a sized T profile FB 180 x 8 mm FP 75 x 10 mm, which ranges from 28 - 29 m/s2 for the x-axis vibration value, while for vibrations on the y-axis the maximum is 10-11 m/s2, and on the maximum z-axis. at 20-21 m/s2, this analyze vibration is based on the time between 0 - 15 seconds or per 15 second interval, able to reduce percentage of vibration in the ship engine room area is 34.91%.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2022, 16, 2; 337--340
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation of Gamboeng Tea Product Manufacturing Process and Their Role in Reducing Environmental Impact
    Autorzy:
    Bardant, Teuku B.
    Setiawan, Arief A. R.
    Haq, Miathia S.
    Prasetia, Hafiizh
    Mastur, Adhi I.
    Harianto, Sugeng
    Putra, Augusta S.
    Sulaswatty, Anny
    Wiloso, Edi I.
    Noguchi, Ryozo
    Powiązania:
    https://bibliotekanauki.pl/articles/1841412.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CO2 emission
    dried tea
    powdered tea
    boxed tea
    consuming habits
    Opis:
    This study offers an overview of how changing habits in consuming a cup of tea can contribute to make better environment. As the initial existing scenario, survey for picturing Indonesian consumers in preparing their cup of tea from dried leaves was conducted to urban and suburban citizens. According to the survey, both respondent groups were using LPG as the first choice in boiling water for preparing tea, followed by using an electric dispenser as the second choice. This habit causes CO2 emission from processing a cup of tea by Indonesian consumer was 24 g CO2-eq per cup of tea, excluding the tea organic waste. The portion of CO2 emission from boiling water in tea preparation was 41.93% of whole CO2 emission from plantation to served cup. The emission can be significantly reduced by converting dried tea (initial scenario) into the ready-to-drink product, in the form of powdered tea (second scenario) and boxed tea (third scenario). This study simulated an integrated system of tea product manufacturing system with biogas utilization produced from tea organic waste. Simulation conducted based on daily manufacturing process at the Gamboeng green tea factory. Additional required energies were simulated from the wood pellet, which is the best practice in the Gamboeng Tea factory. By shifting tea consuming habit from dried tea to powdered tea and/or boxed tea, the emission from a cup of tea can be reduced, with range of reduction varied from 8.87 g to 22.13 g CO2-eq per cup of tea. If the Gamboeng green tea daily production capacity of the factory is fully converted into powdered tea, the potency of CO2 emission reduction reaches 26.92 metric ton CO2. However, the factory should pay attention to providing the water for the manufacturing process. The required water was 45.23 m3 of drinking water if all dried tea converted to powdered tea. Moreover, 11.53 m3 of water is required as irrigation for the biogas process in converting all tea organic waste into biogas.
    Źródło:
    Management and Production Engineering Review; 2021, 12, 2; 86-97
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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