• 한국환경보건학회지
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• 제28권2호
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• pp.1-9
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• 2002

This study was performed to investigate vibration generated from machines that were used at factories and construction works. Vibrations were measured at three points in a straight line based on distance from the vibration sources, and analyzed to assess the vibration bevels. The average vibration level of factory machines was 65.4dBV at 2m, and that of construction machines was 74.0dBV at 5m. Vibration attenuations was 4.0~8.2dBV by double distance. All such data were applied to gain coefficients of attenuation equations for predicting vibration level by distance from the vibration sources. Data recorded on tapes were analyzed to understand the characteristics of frequency because these characteristics are important factors to design a Plan for installing the vibration-Proof devices. Finally, considering results from these analysis, assessment, and prediction, the methods for reducing vibration generated from machines were discussed.

• 한국디지털건축인테리어학회논문집
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• 제4권1호
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• pp.46-53
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• 2004

The interest about noise and vibration is increasing by a living level elevation recently. Particularly, the interest about the influence that vibration of machine has on the safety of building is rising. However, there are a lot of the cases that the influence of machine isn't considered in designing the factory buildings. The purpose of this study is to suggest the results of measuring that the influence of machine's vibration in A factory has on the building structure.

• 한국디지털건축인테리어학회논문집
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• 제3권1호
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• pp.50-58
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• 2003

The interest about noise and vibration is increasing by a living level elevation recently. Particularly, the interest about the influence that vibration of machine has on the safety of building is rising. However, there are a lot of the cases that the influence of machine isn't considered in designing the factory buildings. The purpose of this study is to suggest the results of measuring that the influence of machine's vibration in A factory has on the building structure.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 춘계학술대회논문집
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• pp.102-106
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• 2006

Community noise has been serious social issues in Korea. The community noise concerns on traffic, industrial and apartment complex noise. In industrial noise, construction, factory sectors are included. This paper summerizes the final report prepared for MOE in 2005 by authors. The new policy will be enforced beginning in 2006 with 5 year schedule. Details on the policy will be demonstrated at the presentation.

• 소음진동
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• 제7권1호
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• pp.107-116
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• 1997

Friction between stone and saw of stone cutting machine generates the noise of 96-104 dB in the frequency range of 2kHz-8kHz, which may cause occupational hearing loss. By designing enclosures which are made of transparent acryl, PVC panel and absorption materials, about 15 dB noise reduction has been achieved in the stone cutting factory. It is demonstrated that this kind of enclosures can be effectively used to reduce the noise in the stone cutting factory.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 1994년도 추계학술대회논문집; 한국종합전시장, 18 Nov. 1994
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• pp.52-57
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• 1994

본 논문에서는 실험적 모우드해석법을 이용하여 현재, 국내에서 가동 또는 건설 중인 반도체공장의 세가지 유형에 대한 격자보의 동적특성을 분석, 결정하고 이를 격자보의 동적설계에 활용하고자 한다.

• 한국산업보건학회지
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• 제9권2호
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• pp.52-65
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• 1999

This study was performed to evaluate the hand-arm vibration of the steel processing factory workers. Measurement, evaluation and as sessment were based on the International Standard(ISO 5349). The frequency weighted accelerations of the various hand-held tools and total exposure time were measured to assess the periods for the white finger symptom to occur. As a result, it was found that the air angle grinder and the air baby grinder are more harmful than other hand-held tools. It was also found that using various vibratory tools together is more harmful than using a single tool.

• 한국전자통신학회논문지
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• 제13권4호
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• pp.751-756
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• 2018

스마트 팩토리나 산업용 IoT에서는 공장 내 모든 기기와 장비가 인터넷으로 연결되어 모니터링 됨으로써, 장비나 기기가 고장 나기 전에 예지보전을 통해 설비의 다운타임을 줄이고, 생산성과 가용성을 높일 수 있다. 공장내 주요 설비의 이상 상태는 온도의 이상 상승, 진동과 소음의 변화를 수반하여 나타나게 되므로, 좁은 공간에 쉽게 설치하여 설비의 진동상태를 실시간으로 모니터링 할 수 있는 초소형 스마트 디바이스 개발은 매우 중요하다. 본 연구에서는 WiFi 기능이 있는 초소형 마이크로컨트롤러와 MEMS 가속도 센서를 이용하여 스마트 펙토리의 이상 고장 예지 및 건전성 관리를 위한 스마트 디바이스를 개발하고 그 성능을 분석하였다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 춘계학술대회논문집
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• pp.778-784
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• 2002

FFU are used increasingly by the microeleceronics industry to provide clean recirculating air for the fabrication of integrated circuits and laminar flow air. There may be several hundred ffu in a large cleanroom, covering 100% of the ceiling area. Hence, there is of often knowledge in the inside and outside of the country the flu give rise to noise & vibration trouble to microelectronics industry. Noise ＆ Vibration control for satisfication about noise ＆ vibration criteria in TFT-LCD factory cleanroom be in need of exact noise & vibration data of accurence from utility & equipment that can be exert a bad influence upon cleanroom. In this pater, hence we found out noise and vibration properities of ffu by using experimental method. And, we performed noise ＆ vibration analysis about noise it vibration level in cleanroom using semiempirical method for quantative approach about noise ＆ vibration level in cleanroom.

• 한국소음진동공학회논문집
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• 제17권8호
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• pp.726-735
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• 2007

Inside the factory buildings of aprecision industry (which produces semiconductors or TFT-LCD), thousands of vibration-sensitive precision equipments operate in the clean rooms. Various utility equipments that are installed around them for proper operation cause various sources of noise and of vibration to exist inside the clean rooms and thus deteriorate the noise and the vibration environment within. In this study, we check if the existing transient vibration phenomenon is caused by the vibrations that arise from operating the utility installed near these equipments; compare and evaluate the vibration criteria of precision equipments regarding the transient vibration phenomenon; and check the efficiency of these criteria.