사단법인한국소음진동공학회 The Korean Society for Noise and Vibration Engineering

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저널레터 : Trans. Korean Soc. Noise Vib. Eng., Vol. 33, No. 5 한국소음진동공학회 2023-10-27
첨부파일
2023년 10월 제 33권 제 5호 통권 274호
함정 내 가변 음향환경을 고려한 기계학습 기반 능동 소음 제어 연구
Deep Learning-assisted Active Noise Control Time-varying Naval Ship Environment
우 성 화 · 임 성 훈 · 한 태 우 · 박 재 호 · 엄 원 석
Sunghwa Woo, Seonghun Im, Taewoo Han, Jaeho Park and Won-Suk Ohm
The effectiveness of active noise control, commonly based on the popular filtered-x least mean square algorithm, depends on the fidelity of secondary path estimation between the secondary source and the error microphone. The corresponding secondary path of a time-varying acoustic environment such as the cabins and compartments...
군사격장 인근 주거지역에서의 소음과 성가심 반응 고찰
Impulsive Noise and Annoyance Response in Residential Areas Near Military Shooting Ranges
성 요 한 · 김 하 근 · 김 명 준
Yo Han Seong, Ha Geun Kim and Myung Jun Kim
High-energy impulsive noise caused by shooting or explosion has become a growing problem in South Korea, especially for residents living near shooting ranges exposed to it for a long time. To address this issue, the Military Airfields and Military Firing Ranges Noise Prevention and Compensation Act was...
저속 RFV 측정장비의 드럼 직경에 따른 휠타이어 반경방향하중 영향 측정 및 분석
Measurement and Analysis of Effect of Radial Force Variation on Tires According to Drum Diameter of Low-speed RFV Measuring Equipment
이 충 현 · 김 동 준 · 윤 기 훈 · 신 현 재 · 이 계 상 · 나 형 준 · 심 규 호
Choonghyun Lee, Dong-Jun Kim, Kihoon Yoon, Hyunjae Shin, Kyesang Lee, Hyungjoon Na and Kyuho Sim
As the era of private space development has begun in earnest, the amount of space debris is also increasing rapidly. Therefore, active debris removal methods are being studied. In this study, the contact-type space debris active removal method using the space net was analyzed for the tendency of the space net design variables through the structural...
APR1400 원자로 축소모델 하향유로 수력하중 평가
Assessment of Hydraulic Loads at Downcomer for Advanced Power Reactor 1400 Scale-down Model
고 도 영 · 김 규 형 · 장 호 철
Do-young Ko, Kyu-hyung Kim and Ho-cheol Jang
The hydraulic loads of the downcomer here were obtained by installing and testing several dynamic pressure transducers in a 1/7 scale model of the reactor. The downcomer could be divided vertically into five hydraulic load regions based on the measured values. The dynamic pressure of the inner wall of the reactor vessel and...
우주비행체 진동시험을 위한 신규 대형 수직 가진 시스템 설계
Design of Large Vertical Vibration Shaker System for Spacecraft Vibration Test
임 종 민 · 우 성 현 · 은 희 광 · 전 종 협
Jong-Min Im, Sung-Hyun Woo, Hee-Kwang Eun and Jong-Hyub Jun
During the launch process, the launch vehicle and satellite are affected by transient dynamic loads such as engine ignition, wind gusts, and quasi-static loads. Vibration tests are performed using a vibration facility to demonstrate that the spacecraft structure can withstand the loads of the launch environment. Especially in vertical...
기초 질량부가 포함된 상부 수동형 서브 마운트 기계적 특성 개선
Mechanical Property Refinement of Upper Passive-type Sub-mount Including Mass-block
박 진 우 · 김 찬 중
Jin-woo Park and Chan-Jung Kim
If there is a mechanical system that produces excessive vibration during operation, an anti-vibration mount must be installed to prevent the transmission of the generated vibration to the floor. Mass-block has been utilized to lower the resonance frequency of the underground structure, and the anti-vibration module is a complex...
재료의 점탄성과 공기의 점성을 고려한 보의 복소 모드해석을 위한 정식화
Formulation for Complex Modal Analysis of Beam with Internal and Air Viscous Damping
김 용 우
Yong-Woo Kim
This paper presents a state space formulation for complex modal analysis of a beam with internal viscous damping and air viscous damping. Equation of motion and boundary conditions are derived by utilizing the extended Hamilton’s principle, and orthogonal conditions are derived. Decoupled modal...
유도탄 장착용 레일타입 발사대의 동적 특성에 대한 연구
Dynamic Characteristics of Rail-type Launcher for Missile Loading
조 우 제 · 정 회 인 · 박 진 보 · 최 동 설
Woo-je Cho, Hoe-in Jeong, Jin-bo Park and Dong-seol Choi
The present study evaluates two procedures for measuring the rotational vibration of a shaft, using an incremental and an absolute encoder, respectively. First, the procedures for rotational vibration measurement using the two encoders are explained. The validity of these procedures is examined through computer simulations, which demonstrate...
Canny Edge검출 기법과 합성곱 신경망을 이용한 심층학습 기반 터보차저 진동 분석
Deep-learning-based Turbo Charger Vibration Analysis Utilizing Canny Edge Detection and Convolutional Neural Networks Technique
임 윤 혁 · 조 형 주 · 이 형 일
Yun-hyeok Lim, Hyung-Ju Cho and Hyeongill Lee
This study proposes a novel method for analyzing turbocharger vibration utilizing a combination of the convolutional neural networks (CNN) technique and the Canny edge detection technique. The conventional 1D machine-learning techniques exhibit poor accuracies due to the irregularly changing...
이동하중 해석을 통한 고속철도의 실내소음 특성 분석
Acoustic Characteristics of High-speed Train Interior Noise Generated by Moving Loads
정 영 빈 · 구 경 래 · 전 성 욱 · 이 규 영 · 최 성 훈 · 박 준 홍
Youngbeen Chung, Kyunglae Gu, Seongwook Jeon, Gyuyoung Yi, Sunghoon Choi and Junhong Park
The high-speed train is an eco-friendly transportation system with high energy efficiency and convenience. The increase in operating speeds led to various problems related to the noise and vibration generation. The distributed power type trains are being utilized. The distributed arrangement...
Application of Autoencoder Models to Replace Band-pass Filters in Image Vibrometry Utilizing Phase-based Motion Magnification
위상기반 확대를 이용한 영상 진동 측정에서 대역통과 필터를 대신하는 오토인코더 모델의 적용
Jae Young An and Soo Il Lee
안 재 영 · 이 수 일
The phase-based motion magnification, employed in video vibrometry, entails filtering a specific frequency band in the time domain to magnify the small motion of an object (or frequency domain). However, if the object’s dynamic characteristics are unspecified, the frequency band should be set to the whole band. In this case, the noise...
탄성지지와 균열을 가지는 폭이 테이퍼진 보의 진동 해석
Vibration Analysis of Width-tapered Beams with Elastic Supports and Edge Cracks
박 민 규 · 최 하 늘 · 이 정 우
Min Gyu Park, Ha Nuel Choi and Jung Woo Lee
Here, a numerical method for free vibration analysis of the elastically restrained width-tapered beams with open-edge cracks is developed. This method is utilized to analyze the effects of the crack and elastic supports on the eigenpairs of the tapered beams. The tapered beam model has both elastic supports and an edge crack at both...
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