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ahmad syafiul
BPPT
Computer Science & IT

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PERHITUNGAN TEGANGAN POROS MODEL PROPELLER PADA UJI SELF PROPULSION MODEL KAPAL Suyadi Suyadi; ahmad syafiul
INOVTEK POLBENG Vol 9, No 2 (2019): INOVTEK VOL.9 NO 2 - 2019
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (309.963 KB) | DOI: 10.35314/ip.v9i2.1106

Abstract

Shaft and propeller is the main function of the implementation of model self-test model self-declaration is a routine work done in BTH - BPPT. Axis serves to move or forward power from transmission to propeller so that the propeller can rotate. The shaft is made of steel pipe or stainless steel (AISI 1020) which has resistance to twist or bending force. Therefore a technical study of the magnitude of torsion and bending stress is necessary for predicting the life of the shaft. To obtain the shaft life is calculated in the propulsion test process where the variable chosen in the propulsion test process is the velocity of the vessel model which is the parameters that influence the force, torque and tension changes. The results of this study indicate that for the model speed of 1.529 m/s obtained the maximum stress 31.75 Mpa / 4.63 Ksi axis operates in normal conditions while the allowable voltage allowable 294,74 Mpa / 42,75 Ksi
KAJIAN DAMAGE STABILITY PADA STUDI KELAYAKAN DESAIN KAPAL BARGE PENAMBANG TIMAH DENGAN PENDEKATAN METODE NUMERIK Ahmad Syafiul
INOVTEK POLBENG Vol 9, No 2 (2019): INOVTEK VOL.9 NO 2 - 2019
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.344 KB) | DOI: 10.35314/ip.v9i2.1123

Abstract

Nearly 90% of ship accidents or ship sinking are caused by leakage. Tin Mining Barge Vessel is an interesting research object because there are various challenges that are being faced in designing, arranging, and constructing tin mining vessels, especially regarding stability studies when a ship has a leak. Tin Mining Barge Vessel has a displacement (Δ) = 3025 tons, length (LoA) = 68 m, Width (B) = 17 m, High (H) = 5 m, Sarat (T) = 3 m. The configuration of the stability simulation of The Tin Mining Barge Vessel uses a variation of 1 intact case and 15 damage cases where simulated compartments around the ship's hole have leakage and then calculated its stability value and compared the results with IMO Code A.749 (18) Ch 3 and IMO regulations SOLAS requirements Chapter II Part B-1. From the results of the study, it can be concluded that the ship becomes unstable if there is a leak in the compartment on one side of the hole of the ship such as the Void 3 and 4 compartments at Portside (P) or on the Starboard (S). Overall, it can be concluded that the Tin Mining Barge Vessel will be instability when a leak occurs. The solution is conducted by adding the installation of a watertight length with a distance of 1200 mm in the compartment: Void 3 (P), Void 4 (P), Void 3 (P), and Void 4 (S).
Co-Authors Suyadi Suyadi