통합 검색 | Korea Science

김선우;손철봉;송용식;장길수;이태강;국찬;김재수;한명호
- 한국음향학회지
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- 제9권4호
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- pp.5-17
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- 1990
국내 설정에 적합한 차음성능기준 및 등급화 방안을 설정하기 위하여 그 기초 연구단계로서 주민반응조사 및 차음성능수준을 측정하고, 차음성능 평가치와 생활감과의 상관관계를 분석 외국의 기존 평가기준곡선 적응가능성을 검토하였다. 분석결과 ISO에 의한 평가방법보다는 JIS에 의한 평가방법이 국내 공동주택의 경우에는 보다 합리적임을 파악하였고, 표준충격원은 경량 및 중량충격원을 사용하는 것이 타당하다고 판단된다. 또한 측정시 문제가 되는 63Hz 중심 주파수대역을 측정범위에서 제외하여도 차음성능 지수상의 오차는 무시할 수 있었다.
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문대호;오양기;정갑철;박홍근
- 한국소음진동공학회논문집
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- 제26권2호
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- pp.130-140
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- 2016
Floating floor is most commonly used at apartment houses in Korea for thermal insulation and reducing impact noise. But it in proven that the floating floor is not effective for reducing the floor impact noise in low frequency range. In most cases, impact sound pressure level under 63 Hz frequency band were actually increased by the resonance of resilient material, lightweight concrete and the finishing mortar installed on it. In this paper, an integrated floor system consist of 70 mm light weight concrete and 40 mm finishing mortar successively installed on the concrete slab was suggested to avoid the resonance. Integrated floor system increases total flexural stiffness and mass per unit area. The natural frequencies of first and second vibration mode were increased and acceleration response and floor impact sound level was decreased in all measurement range.
https://doi.org/10.5050/KSNVE.2016.26.2.130 인용 PDF KSCI KPUBS HTML

양수영;이동훈;홍병국;송화영;이주원
- 한국소음진동공학회:학술대회논문집
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- 한국소음진동공학회 2005년도 춘계학술대회논문집
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- pp.275-278
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- 2005
In this study, the dynamic properties of a floor impact sound isolation pad expressed in terms of the natural frequency, the dynamic stiffness per unit area and the loss factor are measured by the resonant method. By using the measured dynamic properties, the vibration transmissibility diagram is obtained for each isolation pad, which is compared with the values tested by the impact sound sources at the room in an apartment. From the comparative results, it is found that the noise reduction Performances. of isolation pads are closely connected with the natural frequency and the dynamic stiffness per unit area.
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정영;유승엽;김민배;전진용
- 한국소음진동공학회:학술대회논문집
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- 한국소음진동공학회 2005년도 춘계학술대회논문집
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- pp.96-99
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- 2005
Noise and vibration generated by heavy-weight floor impact in apartment buildings were studied. The resonance frequency increased in the floor structures where damping materials were used in the living room and the bedroom. Both the acceleration wavelength and the acceleration level decreased. The results showed that the resonance frequency increased and vibration acceleration level decreased when the damping materials were used. Heavy-weight impact sound levels of the structure decreased substantially below 80Hz.
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