Verification of Resistance Welding Quality Based on Deep Learning

Ji-Hun Kang, Namkug Ku

Welding is one of the most popular joining methods and most welding quality estimation methods are executed using joined material. This paper propose welding qu...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.473

Determination of Optimal Ship Route in Coastal Sea Considering Sea State and Under Keel Clearance

Wonhee Lee, Wonchul Yoo, Gwang-Hyeok Choi, Seung-Ho Ham, Tae-wan Kim

Ship route planning is to find a route to minimize voyage time and/or fuel consumption in a given sea state. Unlike previous studies, this study proposes an opt...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.480

A Study on the Work-time Estimation for Block Erections Using Stacking Ensemble Learning

Hyukcheon Kwon, Wonsun Ruy

The estimation of block erection work time at a dock is one of the important factors when establishing or managing the total shipbuilding schedule. In order to ...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.488

Progress of the 2013 Interim Guidelines for Determining Minimum Propulsion Power to Maintain the Manoeuvrability of Ships in Adverse Conditions

Young Jae Sung, Yu Bin Ock

Literature survey was conducted on the 2013 Interim Guidelines for determining the minimum propulsion power to maintain the manoeuvrability of ships in adverse ...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.497

Effects of Flow Acceleration on Drag Force and Wake Field of 2D Circular Cylinder

Hyun A Son, Sungsu Lee, Seong Rak Cho

Computational studies of accelerating flow around 2D Circular Cylinder was performed to investigate characteristics of wake field and drag forces. Previous stud...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.507

Mechanical and Thermal Characteristics of Polyurethane Foam with Two Different Reinforcements and the Effects of Ultrasonic Dispersion in Manufacturing

Jin-Yeon Kim, Jeong-Dae Kim, Jae-Myung Lee

Since Liquefied Natural Gas (LNG) is normally carried at 1.1 bar pressure and at -163℃, special Cargo Containment System (CCS) are used. As LNG carrier is becom...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.515

A Study on a Manpower Forecasting Model for Naval Ships

In ha Hwang, Yeon hwan Jeong, Ki hyun Lee, Seok joong Kang

The low birthrate and the need for national defense reform in Korea drive the Navy to develop efficient human resource planning such as a manpower forecasting m...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.523

Experimental Study of Ice Friction and Abrasion Test Methods for Polar Paint

Seong-Rak Cho, Eun-Jin Oh, Cheol-Hee Kim, Jae-Man Lee, Sung-Pyo Kim

This study describes a test method for evaluating the ice friction and abrasion performance of polar coatings. The evaluation methods of physical properties of ...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.532

Experimental Study on Supercavitated Body with Static Angle-of-attack

Jun-Hee Lee, Bu-Geun Paik, Kyoung-Youl Kim, Min-Jae Kim, Seonhong Kim, Seung-Jae Lee

In the present study, we investigated planing forces of supercavitated bodies by using the supercavitation shape produced by the disk type cavitator. The cavity...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.541

Design of a Pendulum-type Anti-rolling System for USSV and Verification Based on Roll Damping Coefficient

Woo-Seok Jin, Yong-Ho Kim, Jun-Ho Jung, Kwangkook Lee, Dong-Hun Kim

The roll motion of a general vessel, which is more influenced by resonance as compared to other motions, adversely affects the passenger and hull. Therefore, re...

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DOI: https://doi.org/10.3744/SNAK.2019.56.6.550