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Proceedings Conference on Marine Engineering and its Application
Published by Politeknik Perkapalan Negeri Surabaya
ISSN : -     EISSN : 26553333     DOI : https://doi.org/10.33863/cmea.v6i1.2426
Core Subject : Engineering,
Engineering Mechanical Engineering
The Proceedings of Marine Engineering and Its Application (CMEA) is an open-access publication, allowing global access for readers to publish, read, download, cite, and share the content freely. CMEA focuses on the dissemination of original ideas, innovative research, and practical developments contributed by scientists and engineers from both academic and industrial backgrounds. The journal welcomes a wide range of submissions, including theses, research articles, and review papers, covering topics in mechanical engineering, marine engineering, and related fields.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 20 Documents
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Search results for , issue "Vol 3 No 1 (2020): Conference on Marine Engineering and its Application" : 20 Documents clear
Analisa Kebijakan Penjadwalan Perawatan pada Main Engine MV. Tanto Bersinar dengan Menggunakan Metode Reliability Centered Maintenance Dories Putra Pradana; Muhammad Shah; Abdul Gafur
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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Mesin utama memiliki peranan penting dalam menunjang kegiatan berlayar karena jika mengalami kegagalan maka kapal tidak bisa berjalan dan menimbulkan kerugian ekonomi. Saat ini PT. Tanto Intim Line melakukan perawatan di semua kapalnya berdasarkan corrective maintenance. Metode tersebut dinilai masih belum efektif untuk menangani kegagalan yang terjadi, karena sedikitnya sumber daya manusia yang tersedia sehingga belum teratasi dengan baik. Dengan demikian, diperlukan maintenance task yang tepat, sehingga perusahaan dapat memprediksi kerusakan yang terjadi dan menyediakan suku cadang baru sebelum kerusakan terjadi. Metode perawatan yang sesuai dalam menentukan apa yang harus dilakukan adalah dengan menggunakan RCM (Reliability Centered Maintenance), dengan metode ini dapat diketahui jenis perawatan dan interval perawatan yang sesuai untuk setiap komponen yang mengalami kegagalan. Berdasarkan analisa didapatkan frekuensi kegagalan pada komponen injector sebesar 6 kali/tahun, komponen piston dengan frekuensi kegagalan 4 kali/tahun. Dengan didapatkannya hasil frekuensi kerusakan maka dapat ditentukan strategi perawatan pencegahan (preventive maintenance) untuk komponen yang memiliki tingkat resiko paling tinggi dan menengah sehingga mempengaruhi biaya, produksi, dan kesehatan serta keselamatan kerja adalah piston, injector, cylinder head, cylinder liner, governor, fuel injection pump dan perawatan saat terjadi kerusakan (corrective maintenance) untuk komponen yang memiliki tingkat resiko paling rendah adalah connecting rod & crosshead, thrust bearing, crankshaft.
Analisa Pengaruh Sudut Stagger Di Depan Advancing Blade Terhadap Performa Turbin Air Savonius Myring Blade n=1 & n=2 Alfin Ardianto; Priyo Agus Setiawan; Nopem Ariwiyono
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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Savonius water turbines can work at low fluid flow rates and have high torque, but have disadvantageswhich is the lowest Cp value compared to other turbine types. Efficiency can be improved by changing the shapeof the Savonius Turbine blade using the myring equation and adding an obstacle. The experimental method in thisstudy combines two blades resulting from variations of the value (n) in the myring equation n = 1 and n = 2, withmyring n = 1 placed on the concave side and n = 2 on the convex side. To improve performance, a 12 cm diametercircular cylinder is placed in front of the advancing blade with varying stagger angles. The test model has a heightof 0.40 m and a diameter of 0.40 m which will be tested in a flowing tank with a width of 1 m and height of 1 m.Experiments were carried out at a current speed of 0.2 m / s by measuring the turbine rotation and load to producea torque coefficient and a power coefficient. The experimental results show that the placement of the circularcylinder with ds / D = 0.3, S / D = 0.75, and ? = 60º obtained the highest performance with an angular velocityof 0.5160 rad / s, Coefficient of torque (Ct) of 0.2936 and Coefficient of power (Cp) of 0.1515. With a percentageincrease compared to myring n = 1 and n = 2 without an obstacle of 10.27%, this proves that the addition of acircular cylinder can improve the performance of Savonius water turbines.
KAJIAN EKSPERIMEN PENGARUH PEMASANGAN SILINDER SIRKULAR DENGAN DIAMETER SILINDER 16 CM DAN JARAK 20 CM PADA SISI ADVANCING BLADE TURBIN AIR SAVONIUS Deni Purnanto; Subagio Soim; Priyo Agus Setiawan
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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Savonius turbine for the first time was founded by Sigurd Johannes Savonius in 1922. This turbine hasvertical axis and half-round shaped on each side of blades and like an “S”. This turbine aslo called as drag turbinebecause it need drag force on its blades to whirling the turbine. Many research were done to increasing theperfomance of this turbine and one of them was using deflector plate in front of the turbine. On this experiment,the method is using distance and diameter of circular cylinder variations. The turbine for this experiment usingmyring equation with n=1 for the blades shape. Dimension of the turbine is 400 mm in height and 400 mm indiameter. The diameter of circular cylinder (ds) is 16 cm and the distance (A) is 20 cm used in this experiment.The result obtained in this experiment showing that the highest value of Ct is 0,3038 at TSR 0,633 with increasedpercentage is 7,955%. The highest Cp value is 0,1924 at TSR 0,633 with increased percentage is 20,828%.
ANALISA PEMASANGAN SISTEM PENGGERAK PADA KAPAL CRANE BARGE DENGAN PROPULSI ELEKTRIK Farrel Chandra Mukti; Eko Julianto; Abdul Gafur
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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A Crane barge ship is a ship designed specifically to have a crane on deck. The function of thisship is to unload coal/bulk cargo at the mid-sea, which is to go the middle of the sea this sip must be towedby Tugboat. This research will discuss the analysis of the propulsion system using electric propulsion withazimuth thruster propeller. In this study the calculation is the resistance of the ship, power requirement bythe ship, selecting of a propeller, electrical system. The calculation resistance of the ship using maxsurfresistance software, before simulation the model 3D of ship design in maxsurf modeler. Then if theresistance value is determined can be used to calculate the power of electric motor requirement as theprimer mover of the ship. Then the result of these calculations can be selected as the propeller. Based onthe calculation result, the value of the ship resistance is 1555,95 kW when the ship used 4 azimuth thruster,so the resistance value is 388,987 kN. The power of the electricity needs to supply power to motor electricas the primer mover is 4632 kW. The Selection of propeller used is a product from thrustmaster which hasa thrust is 529 kN with a diameter propeller is 2.99 meters.
PERENCANAAN PERAWATAN IMPELLER DAN SHAFT FRESH WATER PUMP DENGAN METODE PREDICTIVE MAINTENANCE Ahmad Muzzammil; Nurvita Arumsari; Benedicta Dian Alfanda
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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A maritime transportation based company used corrective maintenance on these two component,impeller and shaft of fresh water pump inside their ship’s water cooling system. While using correctivemaintenance, these two components are getting maintained when its already in worse condition and made thesystem down. Therefore, a reliability analysis is performed using predictive method to predict when will these twocomponent would break down and then scheduled to fix based on MTTF value of component. Then, the systemwould run without getting disrupted because of the unit’s downtime.
ANALISA RESPON GETARAN TERHADAP PEMODELAN MISALIGNMENT SHAFT PROPELLER KAPAL WHITE PRODUCT TANKER Bagas Haris Firmansyah; Adi Wirawan Husodo; Abdul Gafur
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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Penelitian ini mengkaji respon getaran torsional sistem transmisi dari kapal white product tanker.Tugas akhir ini akan dijadikan acuan atau pedoman kepada galangan untuk mengetahui getaran akibat dari efekmisalignment. Pemodelan menggunakan standar 2 derajat kebebasan yang digambarkan dengan 2 persamaandifferensial. Terdapat 2 pusat massa yang berada di stern tube dan propeller. Tugas akhir ini akan dilakukanproses pemodelan getaran poros propeller akibat misalignment menggunakan software MATLAB 2013a. Variasimisalignment yang digunakan untuk proses pemodelan getaran sebesar 0,025 mm, 0,05 mm, 0,075mm, dan 0,1mm. Variasi tersebut merujuk pada standard maksimum mislaignment yang dikeluarkan oleh class untukmengetahui respon getaran, frekuensi natural, dan resonansi dari setiap variasi misalignment. Hasil daripemodelan menunjukan nilai dari respon getaran pada saat kondisi centre sebesar ?1 range amplitudo -1,4107997x10-7rad/s sampai dengan 1,5086487x10-7 rad/s dan ?2 range amplitudo -9,477330x10-7 rad/s sampaidengan 8,8626428x10-6 dengan periode 0,05 sec dan waktu 1800 sec. Pada ukuran misalignment 0,1 mm dengannilai respon getaran ?1 min -1,41079x10-7 rad/s maksimum 1,50873x10-7rad/s dan ?2 range amplitudo -9,4772x10-7 rad/s sampai dengan 8,86278x10-7 rad/s. dengan periode 0,05 sec dan waktu 1800 sec. Respongetaran yang terjadi pada varias misalignment masih diijinkan standard ISO Severity 10618-3 dan class ABS.Semakin besar ukuran dari misalignment akan menyebabkan semakin besarnya getaran yang terjadi.
ANALISA UNJUK KERJA TWO STROKE MARINE DIESEL ENGINE BERBAHAN BAKAR CAMPURAN MINYAK SOLAR DAN BIODIESEL MINYAK KELAPA PADA BEBAN SIMULATOR FULL LOAD M Haris Sochibul Kirom; Muhammad Shah; Edi Haryono
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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As the era develops, the need for petroleum is getting bigger as a fuel so thatinnovation is needed to create renewable energy that can be continuously renewed and utilized,one of which is by creating biodiesel. Biodiesel is a fuel produced from animal fats and vegetableoils through a transesterification process. One of the crops that has the potential to becomebiodiesel is coconut, because Indonesia has the largest coconut plantation in the world. Inaddition, coconut oil also has a very high ester content when compared to other vegetable oils.This study aims to analyze the performance of marine diesel engines under full load conditionsusing mixed fuels, namely diesel and coconut oil biodiesel for power, torque, and gsfc. In thisstudy, the most optimal variation of the fuel mixture on the performance of marine dieselengines. From the test results, it can be concluded that the mixture of coconut oil biodiesel withdiesel fuel increases the power produced with a torque of 239.6343 Nm. The use of the fuelmixture increases the performance of the diesel engine so that the power and torque produced ishigher than using Pertamina Dex alone. From the results of research, the B30 fuel has the highestpower and torque and the B30 fuel also has the lowest gsfc value.
Analisa Terhadap Stabilitas dan Olah Gerak pada Kapal Ferry Ro-Ro Akibat Penambahan Panjang Yanuar Eka Erida; Raden Dimas Endro Witjonarko; Emie Santoso
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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In this study the authors will analyze the stability and also analyze the sea condition index of the shipafter undergoing modification in addition of length. The analysis continued on checking the stability conditions ofthe ship after undergoing modification of the addition of length by simulating the model and loading on theMaxsurf software, a simulation of loading given when conditions ship departure and arrival and also examine thecondition of the waters in which the ship can sail safely according to seakeeping criteria based on Nordforsk 1987rule. The ship after modification in all loading conditions meets the stability criteria IMO intact stability and hasbetter stability performance than the ship before modification.The ship after modification is not suitable to be onthe Lombok Strait shipping route in full load state because in the calculation the ship has a deck wetnessprobability that exceeds 5% according to Nordfordsk 1987 regulations.
KAJIAN NUMERIK PENGARUH VARIASI SUDUT STAGGER DAN DIAMETER SILINDER SIRKULAR DI SISI ADVANCING BLADE TERHADAP KINERJA TURBIN AIR SAVONIUS BERSUDU KOMBINASI MYRING N=1 DAN N=2 Firdaus Styo Fathoni; Priyo Agus Setiawan; Daisy Dwijati K.R.A
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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Indonesia has a great potential to use water currents as an energy source that can be convertedinto electricity. Savonius water turbines can be used as its solution to make it. Its performance can be improvedby modifying its combined blades with myring n=1 and n=2 and also by adding a circular cylinder on it. TheComputational Fluid Dynamics (CFD) method with Ansys 17.2-Fluent and Tecplot software are chosen and usedfor its flow characteristics study produced by the turbine. Gambit software is also used to create geometry anddomain models. The boundary condition of the model include the inlet as the input properties area with an initialvelocity of 0.22 m/s as analysis limitation of control surface on the test model. The modification include the useof combined blade with myring n=1 and n=2. One circular cylinder is added in front of the advancing blade sothat the flow velocity will be higher and its efficiency can be increased. Circular cylindrical diameters are variousi.e. ds/D=0.2; 0.3 and 0.4 with 0?, 30? and 60? stagger elevation angles. The results obtained from this researchare the values of torque coefficient (Cm), power coefficient (Cp), pressure distribution and fluid flowcharacteristics. Turbine performance has the highest increase (35.86%) on ds/D =0.4 with 60? stagger elevationangle variation. The greatest decrease (30.11%) occured on ds/D=0.4 0? stagger elevation angle variation withoutusing circular cylinder.
RANCANG BANGUN SISTEM OTOMATISASI PADA CUSTOM ICE CRYSTAL MACHINE Mokhamad Rizki Febriansyah; Muh Anis Mustaghfirin; Aminatus Sa’diyah
Proceedings Conference on Marine Engineering and its Application Vol 3 No 1 (2020): Conference on Marine Engineering and its Application
Publisher : Politeknik Perkapalan Negeri Surabaya

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Ice crystal is a daily needs for consumables, so that it needs an inovation that serves as asupport to sover the needs of ice crystal. For the performance of tools needed automation made tofacilitate the performance of this ice crystal machine, with the main drive of the DC motor made forthe ups and downs of the plate as a mold for this ice crystal, then in the automation writer usesArduino as a micro-controller that will capture the DS18B20 sensor. with a DS18B20 sensor that cancapture sensors below -55 ? so that when the ice crystal is frozen the sensor will read and move theDC stepper motor that makes the automatic plate down and the ice crystal attached to the evaporatorwill be released with a reverse process on the system. Ice crystal will fall automatically and prepare atray as a base to hold the ice.

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