사단법인한국소음진동공학회 The Korean Society for Noise and Vibration Engineering

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저널레터 : Trans. Korean Soc. Noise Vib. Eng., Vol. 30, No. 1 한국소음진동공학회 2020-02-21
첨부파일
2020년 2월 제 30권 제 1호 통권 252호
배관 균열형태와 밸브개폐에 따른 음향방출신호 및 진동신호의 특징분석
Feature Analysis of Acoustic Emission and Vibration Signal According to Pipe Cracking Shape and Valve Opening/Closing
최 윤 오 · 김 정 민 · 안 병 현 · 최 병 근
Yun O Choi, Jeong Min Kim, Byeong Hyun Ahn and Byeong Keun Choi
Machinery typically consists of numerous pipes and valves. In particular, Pipes in power plant, are prone to defects owing to high-temperature, high-pressure steam. Such defects may result in reduced efficiency and increased risk of accidents due to fluid leakage. In this study, an experimental model used pipe used in heat exchangers to detect early defects...
저소음 운항절차 개선을 위한 항공기 소음 측정지점 선정기준에 대한 연구
Study on Guideline for the Selection of Aircraft Noise Monitoring Spots for Improvement of Noise Abatement Procedures
이 준 호 · 정 태 량 · 김 득 성 · 전 형 준 · 손 진 희
Jun Ho Lee, Tae Ryaug Choung, Deuk Sung Kim, Hyung-Joon Chun and Jin Hee Son
The Minister of Land, Infrastructure and Transport of Korea has been executing aircraft noise abatement and compensation schemes since 1993; however, there are constant complaints regarding aircraft noise. To establish effective aircraft noise reduction policy, accurate understanding and analysis of aircraft operating noise must be...
실차 적용을 고려한 브레이크 스퀼 소음 저감 고주파 디더 제어 시스템 개발 및 실험적 검증
Development and Validation of a High-frequency Dither Control System for Applications in Automobile Squeal Noise Suppression
강 지 상 · 정 휘 권 · 박 규 해 · 황 재 근 · 김 정 규
Jisang Kang, Hwee Kwon Jung, Gyuhae Park, Jae Keun Hwang and Jeong Kyu Kim
Automobile brake squeal noise, which is nonlinear, friction-induced vibration in the frequency range of 1 kHz ~ 16 kHz, still remains a serious issue for the automobile industry. This paper presents experimental investigations into the suppression of automobile disc brake squeal noises using dither control. Dither control is a concept of active noise control...
공동주택 바닥 공사 공정별 바닥충격음 특성 분석
Analysis on the Characteristics of Floor Impact Sound by Floor Construction Process of Apartment Houses
이 원 학 · 송 국 곤 · 한 찬 훈
Won-Hak Lee, Guk-Gon Song and Chan-Hoon Haan
In the present study, the characteristics of the floor impact sound for each floor structure process is analyzed. To this end, a floor structure using the resilient material expanded polystyrene (EPS) has been constructed. In addition, the thickness of the finishing materials is 7.5 mm. To analyze the floor impact sound characteristics based on the floor construction process, measurements were carried...
차량 도어 래치의 작동력 계산을 위한 수식 유도 :
파트 1- 캐치, 파울 및 릴리스 래버

Calculation Formula for Operating Force of Vehicle Door Latch :
Part 1- Catch, Pawl and Release Lever
이 예 호 · 이 태 훈 · 최 승 복 · 윤 근 하 · 김 완 현 · 정 병 대 · 이 진 복 · 김 다 빈 · 신 진 용
Ye-Ho Lee, Tae-Hoon Lee, Seung-Bok Choi, Gun-Ha Yoon, Wan-Hyun Kim, Byoung-Dae Jung, Jin-Bok Lee, Da-Bin Kim and Jin-Young Shin
Numerous studies on improving the emotional quality and automatic functionality of automobiles have recently been conducted based on various aspects. The first components touched by passengers are the vehicle doors, and thus the feeling of the opening and closing of the doors is a significant emotional quality and should be treated seriously. In this regard, mathematical equations calculating...
차량 도어 래치의 작동력 계산을 위한 수식 유도 :
파트 2-OS/IS래버, 전체 작동력 분석
Calculation Formula for Operating Force of Vehicle Door Latch :
Part 2- OS/IS Lever and Total Force Analysis
이 예 호 · 이 태 훈 · 최 승 복 · 윤 근 하 · 김 완 현 · 정 병 대 · 이 진 복 · 김 다 빈 · 신 진 용
Ye-Ho Lee, Tae-Hoon Lee, Seung-Bok Choi, Gun-Ha Yoon, Wan-Hyun Kim, Byoung-Dae Jung, Jin-Bok Lee, Da-Bin Kim and Jin-Young Shin
A car door has an inner handle and an outer handle. The magnitude of the operating force of the two handles is commonly influenced by the catch, pawl, and release lever of the door latch, and is divided into an OS lever and an IS lever. OS lever and IS lever are connected to the cable of the handle allowing the final operating force to be obtained...
연료 슬로싱 효과를 고려한 위성 기동 간의 SAR 안테나 반사판의 진동 분석
Vibration Analysis of SAR Antenna Reflector during Satellite Maneuver
Considering the Propellant Sloshing Effect
정 바 울 · 김 태 현 · 서 종 은 · 한 재 흥 · 이 재 은 · 정 화 영
Ba-Woul Chung, Tae-Hyun Kim, Jong-Eun Suh, Jae-Hung Han, Jae-Eun Lee and Hwa-Young Jung
Sloshing refers to the movement of a liquid free surface caused by disturbances of a liquid partially filled in a container. Sloshing generates forces and moments owing to the pressure distribution on the liquid free surface, which affect the dynamic stability of the vessel. An equivalent mechanical model that exerts the same amount of force and...
공기청정기의 구조기인소음 저감
Reduction of Structure-born Noise in an Air Purifier
이 부 영 · 류 석 원 · 정 진 태
Booyeong Lee, Seokwon Ryu and Jintai Chung
In this study, we identified structure-born noise in a household air purifier and presented a method for reducing such noise. After noise signals from the air purifier were measured using a microphone, a frequency analysis was conducted to find the source of the noise. To identify the location where the structure-born noise originated, the vibration signals of the scroll were measured, and the frequency components of the measured...
2기1축 선박 추진시스템의 빙 충격 토크해석
Ice Impact Torque Analysis for Twin-engine-One-shaft Marine Propulsion system
이 돈 출 · 송 명 호 · 벙 광 다 오 · 이 재 웅
Donchool Lee, Myeongho Song, QuangDao Vuong and Jae-ung Lee
The number of polar class vessels in the Arctic has been steadily increasing since the opening of the Arctic route. These vessels are designed for specific operations, and are classified using the established polar class (PC) rating system. The ratings, which range from PC1 to PC7, indicate those vessels that
are the most useful (PC1) for year-round operation...
와이어 메쉬 재질을 이용한 하이브리드 마운트용 수동 진동 절연 요소 설계
Design of Passive Vibration Isolation Element by Wire Mesh Material for Developing a Hybrid Mount
신 윤 호 · 이 정 훈 · 정 병 창 · 문 석 준
Yun-ho Shin, Jeong-hoon Lee, Byungchang Jung and Seok-jun Moon
Among various vibration isolation materials and apparatuses such as viscoelastic material, pneumatic spring, coil spring, etc., a wire mesh material is regarded as a good candidate for reducing vibration in terms of production cost, easy of manufacture and product life without deterioration of isolation performance. In this paper, based on...
SMART100 원자로 축소모델시험 사업자 요건 개발
Development of Utility Requirements for SMT of SMART100 Reactor
고 도 영 · 최 선 희
Do-young Ko and Sun-hee Choi
SMART100, a small module nuclear power plant designed by Korea Atomic Energy Research Institute in July 2012, is the first to obtain a standard design approval from the Nuclear Safety and Security Commission. According to the U.S Nuclear Regulatory Commission, the Regulatory Guide 1.20, SMART100 is required to conduct a scale...
동특성 변화를 이용하여 트러스 구조물의 손상 예측
Damage Detection in the Truss Using Modified Dynamic Characteristics
이 정 윤
Jung Youn Lee
In this paper, a method for accurately predicting truss damage from dynamic changes before and after the damage occurs is proposed. This method is used to analyze sensitivity coefficients based on changes in dynamic characteristics and detect the damage using a modified stiffness matrix. This matrix is obtained using an iterative method of the sensitivity coefficient...
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