사단법인한국소음진동공학회 The Korean Society for Noise and Vibration Engineering

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저널레터 : Trans. Korean Soc. Noise Vib. Eng., Vol. 31, No. 6 한국소음진동공학회 2021-12-23
첨부파일
2021년 12월 제 31권 제 6호 통권 263호
방진구 시스템을 장착한 구조물의 시험 및 해석을 통한 구조설계
Structural Design through Test and Analysis of Structure Equipped with Vibration Isolator System
송 아 영 · 임 성 환 · 권 병 오 · 한 대 희 · 정 혜 진
Ah-Young Song, Sung-Hwan Yim, Byung-Oh Kwon, Dae-Hee Han and Hye-Jin Jung
The vibration characteristics of the mounting platforms of surveillance and reconnaissance equipment differ, and their operating conditions should be considered during their design In addition, the attenuation characteristics of an applied vibration are important when a dust prevention system is equipped; therefore, structural integrity should be verified through analysis and...
Micro Hexapod Robot Using Dual-axis Electromagnetic Actuator
2축 전자기 구동기를 이용한 소형 6족 이동 로봇
Quang Hoan Le, WangHun Lee, YoungShik Kim, Bong-Jo Ryu, Hyun-ho Shim and Buhyun Shin
레 광 환 · 이 왕 훈 · 김 영 식 · 유 봉 조 · 심 현 호 · 신 부 현
Microrobots utilized in industrial applications or medical tasks have been researched by applying various types of actuators. However, compared with live organisms, the majority of compact actuators are not able to sufficiently supply the power demanded for robotic implementations. This paper presents a novel design for a hexapod microrobot that uses electromagnetic...
데이터 기반 모델축소법을 이용한 효율적인 비선형 구조해석 개발
Development of an Efficient Nonlinear Structural Analysis Using Data-driven Model Order Reduction
김 혜 진 · 조 해 성 · 이 시 훈 · 신 상 준 · 김 해 동
Hyejin Kim, Haeseong Cho, Sihun Lee, SangJoon Shin and Haedeong Kim
In this paper, a data-driven model order reduction framework is proposed for efficient nonlinear structural analysis. The data-driven model order reduction framework consists of two stages: data mining/analysis with reduced-order modeling (offline) and parametric simulation (online). Herein, the reduced-order modeling is performed using proper orthogonal decomposition...
탐욕 알고리즘 및 특이치 분해를 이용한 프로펠러 초생 캐비테이션의
위치추정
Localization of Propeller Cavitation Inception Using Greedy Algorithm and Singular Value Decomposition
이 정 훈
Jeung-Hoon Lee
An accurate evaluation of the inception of propeller cavitation is a prerequisite for the prediction of the underwater radiated noise performance of ships. Current work treats the acoustic localization for incipient cavitation using the compressive sensing (CS) method. Orthogonal matching pursuit (OMP) based on a greedy algorithm is employed to tackle the CS...
도심지역과 비도심지역 군용비행장의 소음 피해범위 비교분석
A Comparative Analysis for Noise Damage Range of Military Airfields in Urban and Non-urban Areas
김 경 민 · 이 병 찬
Kyoung Min Kim and Byung Chan Lee
In this study, the aircraft noise evaluation method WECPNL, currently used by the military in airfields in urban and nonurban areas, and Lden, which is scheduled to be used starting in 2023, were compared and analyzed. Moreover, Lden was calculated from actual data and using the conversion formula presented by the Ministry of Environment. The differences...
구조-음향 연성 시스템의 진동모드에 의한 소음 예측
Prediction Framework for Vibration Mode Induced Noise of Structure-acoustic Coupling System
황 재 승 · 송 민 정 · 류 종 관
Jae-Seung Hwang, Min-Jeong Song and Jong-Kwan Ryu
An acoustic domain combined with a flexible structure induces a unique sound field due to the interaction between a fluid and the structure at acoustic–structure boundaries. In this study, the characteristics of the acoustic modes induced by a structural vibration mode were examined, and the acoustic noise from the vibration mode was predicted using a numerical...
축소 기체 구조 모델을 이용한 고속 비행 복합형 무인 회전익기의 능동 진동 제어 시험
Active Vibration Control Test of High-speed Compound Unmanned Rotorcraft Using Scaled Airframe Model
홍 성 부 · 박 재 상
Sung-Boo Hong and Jae-Sang Park
Active vibration control for a 25 %-scale model of a high-speed compound unmanned rotorcraft was experimentally studied. The compound rotorcraft uses wings, propellers, and a lift-offset coaxial rotor system with two blades per rotor. A small-scale airframe structure was manufactured using aluminum and steel and appropriately represents the dynamic similarity...
군용비행장 · 군사격장 소음 방지 및 피해 보상에 관한 법률의 개선방향
Possible Improvements to the 「Military Airfields and Military Firing Ranges Noise Prevention and Compensation Act」
홍 정 현 · 하 용 훈
Joung Hyun Hong and Yonghoon Ha
This study aims to identify any problems that may arise as a result of enforcing the 「Military Airfields and Military Firing Ranges Noise Prevention and Compensation Act」and suggest improvements regarding the enforcement of the law. To do so, the purpose and main contents of the law, are compared to those of the 「Airport Noise Prevention and Areas Assistance Act」 a well...
닐센 아치교 케이블 장력에 대한 관리기준치 설정에 관한 모니터링
연구
Monitoring the Management Limit of Cable Tension Force for the Nielsen Arch Bridge
문 인 기 · 최 선 민 · 김 두 산
In Ki Moon, Sun Min Choi and Du San Kim
This study monitors the Nielsen Arch Bridge using U-Network, both during and after construction. The U-Network monitoring system consists of a sensor part that detects structural behavior, a data logger part that stores and measures signals from the sensor, a communication part that connects each data logger, and a main server for data collection and processing. The installation of...
경사 각도에 따른 전동기의 진동 및 고체소음 특성 분석
Effect of Inclination Angles on Motor Vibration and Structure-borne Noise Characteristics
정 호 연 · 구 희 모
Hoyeon Jeong, and Heemo Goo
If less noise radiates from vessels and submarines under water, it is less likely for enemy troops to detect them, which in turn improves the survivability and mission capability of their crews. The Korean Navy thoroughly assesses the structure-borne noise level as a special-performance evaluation item to reduce the underwater radiated noise before loading any equipment. The...
이차 배관 결함별 진동 특성에 대한 테스트베드 / 연구로 / 상업로
운전 조건 및 환경의 영향 분석
Analysis of Vibration Characteristics of Secondary Piping Faults in Testbed, Research, and Commercial Reactors
박 상 진 · 정 변 영 · 박 진 호 · 최 영 철
Sang-Jin Park, Byun-Young Chung, Jin-Ho Park and Young-Chul Choi
In pressurized water reactor systems, pressure boundary components are mechanical systems that exhibit significant differences in pressure between the inside and outside of their boundaries. Any cracks and faults in pressure boundary components should be diagnosed in advance, and pressure boundary integrity should be continuously monitored. Against this backdrop, many...
측정 위치에 대한 강건성을 가지는 구조 진동 신호 기반의 결함 있는 복합재 구조물의 분류
Classification of Damaged Composite Structures Using Structural Vibration Signals Featuring Robustness to Measurement Locations
이 다 운 · 한 장 우 · 김 흥 수 · 손 정 우
Daun Lee, Jang Woo Han, Heung Soo Kim and Jung Woo Sohn
In the present work, a new method to classify healthy and damaged composite structures using experimentally obtained structural vibration data is proposed and evaluated. After fabricating healthy and damaged laminated composite beam specimens, structural vibration data for fixed-free boundary conditions is experimentally obtained via random excitation. The measured vibration...
노트북 컴퓨터에 장착된 SSD의 낙하 실험과 유한요소 해석을 활용한 취약부 및 수명 예측
Prediction of Vulnerable Location and Fatigue Life of an SSD Mounted on a Notebook Computer Utilizing Drop Test and Finite Element Analysis
조 영 정 · 장 건 희 · 한 미 쁨
Yeungjung Cho, Gunhee Jang and Mibbeum Hahn
This study demonstrates a method for predicting the vulnerable location and fatigue life of an SSD (solid state drive) mounted on a notebook computer in a drop environment. In order to construct the drop environment of a notebook computer, a jig with the same weight and structure as the actual computer was used. The SSD was fixed in the same location as...
텍스트 네트워크 분석을 이용한 바닥충격음 연구동향 분석
Analysis of Floor Impact Sound Research Trend Using Text Network Analysis
김 경 우 · 신 혜 경 · 박 상 희
Kyoung-Woo Kim, Hye-kyung Shin and Sang Hee Park
Recently, there has been a growing interest in the collection and utilization of big data in various fields. Several studies are being conducted on the methods of utilization of the ever-increasing data. Big data appears in various forms, such as numbers, pictures, and text. The analysis of texts within social networks is being actively carried out. The research trends related...
풍잡음 저감용 방풍망 특성에 대한 실험적 연구
An Experimental Study on the Characteristics of a Windscreen for Reducing Wind Noise
이 영 진 · 이 진 우
Young Jin Lee and Jin Woo Lee
An experimental study was carried out to identify the characteristics of a windscreen to reduce wind noise. Five different windscreens were used to measure noise reduction, and the windscreen covered the microphone. They have different shapes, sizes, and pores per inch. First, the capability of each windscreen to block wind was studied, and then the effects of noise...
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The Korean Society for Noise and Vibration Engineering
#1406 Renaissance Officetel, 69, Seochojungang-ro, Seocho-gu, Seoul, 06651, Rep. of KOREA
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