Results 111 to 120 of about 5,941 (164)
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Ship hull inspection: A survey
Ocean Engineering, 2023Bosen Lin, Xinghui Dong
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UNDERWATER SHIP HULL INSPECTION
Naval Engineers Journal, 1980ABSTRACTNavy managers need accurate information in order to make cost effective decisions. In the case of ship hull repair or maintenance decisions, the information can often be obtained through Nondestructive Examination (NDE) of the hull. Newly developed NDE hardware and techniques now permit many inspections to be performed on waterborne ships, thus
JOHN MITTLEMAN, DAVID WYMAN
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Journal of Offshore Mechanics and Arctic Engineering, 1995
A method is presented to evaluate the hull bending moment due to bottom slamming. Theoretical explanations and updates are given to the commonly used empirical results, and some observations are made on slamming. An energy approach combined with a strip theory is used to get the hydrodynamic load, and to analyze the effects of the forward velocity ...
P. Rassinot, A. E. Mansour
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A method is presented to evaluate the hull bending moment due to bottom slamming. Theoretical explanations and updates are given to the commonly used empirical results, and some observations are made on slamming. An energy approach combined with a strip theory is used to get the hydrodynamic load, and to analyze the effects of the forward velocity ...
P. Rassinot, A. E. Mansour
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Hull-superstructure interaction in optimised passenger ships
Ships and Offshore Structures, 2011The paper investigates the interaction between the hull and the superstructure in optimised passenger ships when exposed to bending loads. The coupled beam theory was applied to extend the basic beam theory to take into account the vertical and shear stiffness between various decks.
Romanoff, J. +8 more
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Collapase analysis of ship hulls
Marine Structures, 1993Abstract This paper presents an efficient finite element procedure for the collapse analysis of ship hulls under complicated loads. A set of finite elements, such as beam-column elements, stiffened plate elements, and shear panel elements are developed, directly accounting for the geometrical and material non-linearities and initial imperfections ...
Y. Bai +2 more
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Anti-Corrosion Manual, 1985
The performance and the life of a coating depends mainly upon the standard of surface preparation before paint application. The quality of preparation necessary varies with the duty expected of the paint system and the most severe service conditions require the highest levels of cleanliness to be achieved.
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The performance and the life of a coating depends mainly upon the standard of surface preparation before paint application. The quality of preparation necessary varies with the duty expected of the paint system and the most severe service conditions require the highest levels of cleanliness to be achieved.
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The Journal of the Acoustical Society of America, 1997
There is described an apparatus for inclusion in a ship comprising a mass (10), means (16) for vibrationally coupling the mass (10) to the ship's hull (12) and means (28) for damping the movement of the mass (10), the mass (10) being so sized and located as to, when in use, reduce the fundamental and/or harmonics of a transverse two node mode of wave ...
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There is described an apparatus for inclusion in a ship comprising a mass (10), means (16) for vibrationally coupling the mass (10) to the ship's hull (12) and means (28) for damping the movement of the mass (10), the mass (10) being so sized and located as to, when in use, reduce the fundamental and/or harmonics of a transverse two node mode of wave ...
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2014
A fundamental task of the ship designer is to develop the best possible hull form on the basis of certain known (preliminarily determined) dimensions and integrated hull form characteristics, such as ship’s length L, beam B, draft T and hull form coefficients, slenderness ratio, etc., considering the following fundamental factors/criteria:
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A fundamental task of the ship designer is to develop the best possible hull form on the basis of certain known (preliminarily determined) dimensions and integrated hull form characteristics, such as ship’s length L, beam B, draft T and hull form coefficients, slenderness ratio, etc., considering the following fundamental factors/criteria:
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International Conference on Computer Graphics, Imaging and Visualization (CGIV'05), 2005
Ship hull form module is the main module in ship design. The problem of creating fair ship hull surface is of major importance in computer aided ship design environment. The fairness of these surfaces is generally considered a subjective notion depending on the judgment of the designers (e.g.
null Ang Swee Wen +2 more
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Ship hull form module is the main module in ship design. The problem of creating fair ship hull surface is of major importance in computer aided ship design environment. The fairness of these surfaces is generally considered a subjective notion depending on the judgment of the designers (e.g.
null Ang Swee Wen +2 more
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Ship Component in Hull Optimization
Marine Technology Society Journal, 2005This document outlines an optimization to define the size of the components in the power train of an electric ship, specifically one appropriate for an 80 MW Destroyer. The objective is to minimize the volume of the system, including the fuel. The size, number and speed of the gas turbines, the electric generators, and the power electronics are ...
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