Rim Driven Propeller 관련 연구동향 소개
Rim Driven Propeller 관련 연구동향 소개
2023년 성과평가 보고서
N/A
서울대학교 4단계 BK21 친환경 디지털 조선해양 교육연구단 박사후연구원 채용 공고
4단계 BK21 친환경 디지털 조선해양 교육연구단에서 다음과 같이 박사후과정연구원을 채용합니다. 1. 채용 예정인원 1) 조선해양공학 전 분야 0명 2. 지원자격 1) 관련 분야 박사학위 취득자 3. 계약기간 1) 2024.9.1. ~ 2025.8.31. 4. 전형방법 1) 1차 : 서류심사 2) 2차 : 면접(서류 전형 합격자에 한하여 개별 통보) 5. 제출서류 (별도양식 없음) 1) 이력서 1부 […]
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Active Underwater Target Detection Using a Shallow Neural Network With Spectrogram-Based Temporal Variation Features
Abstract In this article, we propose an active target detector by using a shallow neural network (NN) with novel features under small sonar data, where deep learning (DL) models are restricted. The features are contrived by considering differences between target and clutter signals in the temporal variation of amplitude and frequency when using an active […]
Predicting ocean pressure field with a physics-informed neural network
Abstract Ocean sound pressure field prediction, based on partially measured pressure magnitudes at different range-depths, is presented. Our proposed machine learning strategy employs a trained neural network with range-depth as input and outputs complex acoustic pressure at the location. We utilize a physics-informed neural network (PINN), fitting sampled data while considering the additional information provided […]
A fuel-efficient pathfinding algorithm for next-generation WIG crafts
Abstract ABSTRACT Wing-In-Ground (WIG) crafts have the advantage of being fuel-efficient by utilising the ground effect. Next-generation WIG crafts can choose flight paths that navigate over obstacles while flying at specific altitudes. However, current route computation algorithms for ships fail to account for paths that allow ships to navigate over obstacles. Leveraging fundamental path-finding approaches […]
Comprehensive numerical study on shakedown and ratchetting behaviours of a deteriorated 90° back-to-back pipe bends
Abstract This study aims at investigating the effects of local wall thinning on the cyclic plasticity behaviours of 90° back-to-back pipe bends, which are commonly utilised in flexible piping systems within plant facilities. Over time, the prolonged operation of these pipe bends may lead to wall thinning and a deterioration of their structural integrity. To […]
Cutting-edge insights: Crack growth rates in 9% Ni steel from room to cryogenic conditions influenced by crack closure and effective stress intensity factors
Abstract This study investigates the fatigue crack growth rate of 9% Ni steel at varying stress ratios under both room and cryogenic temperatures, attributing different growth rates to the phenomenon of crack closure. Traditional methods of studying crack closure, including the opening force, compliance ratio, and adjusted compliance ratio techniques, are assessed. Our results are […]
Forecasting the Ultimate Strength of Designed Thin-Walled VLCC Structures Based on Imperfection and Pressure Severities: Benchmarking and Developing an Empirical Formula
Abstract The increasing number of accidents involving Very Large Crude Carriers (VLCCs) has heightened concerns regarding ship safety and structural integrity. Stiffened panels have emerged as a crucial element in effectively reinforcing ship structures without significantly adding weight. Reliability analysis has been extensively conducted to evaluate the strength of stiffened panels with various parameters. However, […]
