Fatigue Assessment Pada Pressure Hull Kapal Selam Akibat Korosi

Abimanyu, Dewantoro (2023) Fatigue Assessment Pada Pressure Hull Kapal Selam Akibat Korosi. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pengoperasian kapal selam yang hampir seluruhnya dilakukan di bawah air laut menyebabkan korosi yang tidak dapat dihindari, khususnya pada konstruksi pressure hull. Korosi dapat mengurangi structural integrity sehingga dapat mempengaruhi kemampuan kapal selam untuk beroperasi sesuai dengan kriteria desain. Untuk mengetahui batasan kekuatan struktur kapal selam yang terdampak korosi, diperlukan analisis fatigue life pada pressure hull. Penelitian ini bertujuan untuk menyimulasikan efek penipisan pelat yang disebabkan oleh korosi pada permukaan pressure hull dan komponen penetrasi. Simulasi yang menggunakan perangkat lunak berbasis analisis FEM (finite element method) dilakukan pada model pressure hull kapal selam yang terdampak korosi. Berdasarkan hasil penelitian terhadap model pressure hull yang terdampak korosi, diketahui bahwa terdapat kenaikan nilai total deformation sebesar 0.67%, kenaikan nilai equivalent stress sebesar 38.44%, penurunan fatigue life hingga 100%, dan penurunan nilai safety factor hingga 28.06%.
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The operation of submarines, which is predominantly carried out underwater, leads to inevitable corrosion, particularly on the pressure hull structure. Corrosion can diminish the structural integrity, thereby affecting the submarine's operational capabilities according to design criteria. To determine the structural strength limitations of the corrosion-affected submarine, an analysis of fatigue life on the pressure hull is necessary. This study aims to simulate the thinning effect caused by corrosion on the surface of the pressure hull and penetration components. The simulation is conducted using Finite Element Method (FEM) based software on a model of the corrosion-affected submarine pressure hull. Based on the research findings from the corrosion-affected pressure hull model, it was observed that there was a 0.67% increase in total deformation, a 38.44% increase in equivalent stress, a complete reduction in fatigue life of up to 100%, and a decrease in safety factor values by up to 28.06%

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Cycle, Diminution, Failure, FEM, Pressure; Cycle, Failure, FEM, Penipisan, Tekanan
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Dewantoro Abimanyu
Date Deposited:	18 Aug 2023 02:58
Last Modified:	18 Aug 2023 02:58
URI:	http://repository.its.ac.id/id/eprint/103023

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