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Swimbladder Morphology and Target Strength of Myctophid Fishes in the Northwestern Pacific
Swimbladder Morphology Myctophid Fishes Northwestern Pacific
2009/8/19
Swimbladder shapes of 5 myctophid species captured around northern Japan were measured using an X-ray method. The species were classified into swimbladder and swimbladderless fishes according to the p...
Measurements of Sound-Speed in the Tissue of Juvenile Southern Bluefin Tuna（Thunnus maccoyii）for Target Strength Estimation
Juvenile Southern Bluefin Tuna Thunnus maccoyii Target Strength Estimation
2009/8/19
The ratio between the speed of sound in animals and that of the surrounding water (the sound-speed contrast), particularly for fish lacking any gas-filled organs or for zooplankton, is an important pa...
Measurements of Specific Density of and Sound Speed in Nomura's Jellyfish Nemopilema nomurai to Estimate their Target Strength using a Theoretical Scattering Model
Specific Density Nomura's Jellyfish Nemopilema nomurai Theoretical Scattering Model
2009/8/19
The jellyfish Nemopilema nomurai, which reaches up to 2 m in diameter and 200 kg in weight, has appeared in large numbers in the Sea of Japan during the last several years and has had a negative effec...
A Study on Fatigue Strength Assessment of Welded Structures with Cruciform Joints
Cruciform Joints Weld Joint Ship Structure Fatigue SN Curve Hot Spot Stress Finite Element Analysis
2009/5/19
A large number of cruciform joints can be found in ship structures, but it is generally known that it is not clear how FEM stress output ought to be used and how FEM input ought to be prepared for fat...
Study on Evaluation of Fatigue Strength Based on Modified Miner’s Rule
Wave-Induced Load Fatigue Damage Modified Miner’s Rule Correlation Coefficient Reliability Analysis
2009/5/12
In case of evaluating fatigue strength the fatigue damage based on modified Miner’s rule is often used. This fatigue damage is simply calculated if the distribution of stress response is assumed to ob...
A Method for Estimating Collapse Strength and Reliability of VeryLong Box-type Floating Platforms under Extreme Wave Loads
Collapsing Behavior Analysis Dominant Failure Mode Hydro-Elasticity Short-Term Prediction VLFP
2009/5/12
This paper deals with a method for estimating collapsing behavior and reliability of very long box-type floating platforms (VLFP) under extreme wave loads. First, a simplified estimation method is pre...
A Study on Static Strength of Fillet Welded Joint for Ship Structure-Effect of Inclined Angle, Partial Joint Penetration, Gap
Static Strength Fillet Welded Joint, Inclined Angle Partial Joint Penetration Gap
2009/4/30
The effect of inclined angle on static strength of fillet welded joint for inclined hold frame at forward and afterward hold is studied. In this study normal shear strength of the inclined fillet wel...
Effect of Corrosion on Static Strength of Hull Structural Members (7th Report)
Corrosion Static Strength of Hull Structural Members
2009/4/30
Pitting corrosion is typical corrosion observed on coated hold frames of bulk carriers which exclusively carry coal and iron ore. In order to secure the safety of these types of bulk carriers, it is i...
Effect of Corrosion on Static Strength of Hull Structural Members (6th Report)
Corrosion Static Strength of Hull Structural Members
2009/4/30
The aim of this study is to investigate the effect of pitting corrosion on local strength of hold frames of bulk carriers. In the present study, a series of 3-point bend tests with small structural mo...
Development of a Set of Simple Formulae for Estimation of Ultimate Strength of a Continuous Stiffened Panel under Combined Loads
Simple Formulae Continuous Stiffened Panel Combined Loads FEM
2009/4/30
The authors proposed a set of closed-form simple formulae to estimate the ultimate strength of a continuous stiffened panel under combined biaxial thrust and lateral pressure. This paper extends the a...
Effect of Corrosion on Static Strength of Hull Structural Members (9th Report)
Static Strength Hull Structural Members DOP
2009/4/30
The aim of this research project is to establish a method of evaluating the effect of pitting corrosion with a circular cone shape on local strength of hold frames of bulk carriers. In the present stu...
Effect of Corrosion on Static Strength of Hull Structural Members (9th Report)
Corrosion Static Strength of Hull Structural Members DOP
2009/4/29
The aim of this research project is to establish a method of evaluating the effect of pitting corrosion with a circular cone shape on local strength of hold frames of bulk carriers. In the present s...
Effect of Corrosion on Static Strength of Hull Structural Members (8th Report)
Static Strength Hull Structural Members DOP
2009/4/29
The purpose of this research project is to establish a method of evaluating the effect of pitting corrosion with a circular cone shape on local strength of hold frames of bulk carriers. In the present...
Effect of Grooving on Static Strength of Fillet Welded Joint for Ship Structure under Compressive Stress Condition applied by bending moment (2nd Report)
Fillet Welded Joint Corrosion Grooving Local Strength of Ship Structure Static Strength
2009/4/29
Corrosion of structural members of ships is one of the main problems for ship safety.
In this report effect of grooving on static strength of corroded fillet welded joints for ship structure is inves...
General Buckling Strength of Ring-Stiffened Cylindrical Shells under External Pressure and Effective Breadth of Ring-Stiffeners
External Pressure Effective Breadth
2009/3/30
Recently, we usually use the numerical method to calculate the buckling strength of plate and shell structure.