Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Correlation Between Dynamic Stiffness of Resilient Materials and Lightweight Floor Impact Sound Reduction Level

완충재 동탄성계수와 경량바닥충격음 저감량의 상관성

  • 김경우 (한양대학교 대학원 건축공학과) ;
  • 정갑철 ((주)비아엔지니어링) ;
  • 손장열 (한양대학교 건축대학 건축공학과)
  • Published : 2008.08.20
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Abstract

Resilient materials are generally used for the floating floors to reduce the floor impact sound. Dynamic stiffness of resilient material have a close relation with the floor impact sound reduction. In this study, to examine the relationship between dynamic stiffness and lightweight impact sound level, the dynamic stiffness and floor impact sound level of 51 resilient materials were measured. The impact sound level of each of these resilient materials, whose dynamic stiffness was measured, was measured before and after installation, and the level difference (${\Delta}L$) was analyzed. The result of test showed that the dynamic stiffness of resilient materials decreased, the lightweight impact sound level also decreased, and there was a correlation between the dynamic stiffness and the lightweight impact sound, especially in the low frequency domain.

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References

  1. Ministry of Construction and Transportation Notification No. 2006-435, "Apartment Housing Floor Impact Sound Insulation Structure Confirmation and Management Standard"
  2. Lee, J. W., Jeong, G. C. and Kwon, Y. P., 2003, "Correlation between Dynamic Characteristics of Isolation Material and Impact Noise Reduction of Light-weight Impact Source", Proceedings of the KSNVE Annual Spring Conference, pp. 191-195
  3. Korean Standard, 2003, KS F 2868 Determination of Dynamic Stiffness of Materials used Under Floating Floors in Dwellings
  4. Kim, K. W., Jeong, G. C. and Sohn, J. Y., "Evaluation of the Dynamic Stiffness and Heavy-weight Floor Impact Sound Reduction by Composition of Resilient Materials", Transactions of the Korean Society for Noise and Vibration of Engineering, Vol. 18, No. 2, pp. 247-254 https://doi.org/10.5050/KSNVN.2008.18.2.247
  5. Cremer, L., Heckel, M. and Petersson, B. A. T., 2005, "Structure-borne Sound", Springer-Verlag Berlin
  6. Alessandro, S., Andrea, P. B. and Francesco, R., "Dynamic Stiffness Measurement an Empirical Model to Estimate the Reduction in Impact Sound Pressure Level and Its Relative Improvement Curve", ICA 2004 ; 3401-3404
  7. International Organization for Standardization, 1989, ISO 9052-1 Acoustics - Determination of Dynamic Stiffness-Part 1: Materials used Under Floating Floors in Dwellings

Cited by

  1. Development of Analytical Impact Force Models for Floor Impact Vibration and Acoustic Numerical Analysis vol.6, pp.5, 2016, https://doi.org/10.3390/app6050120
  2. Analysis of Heavyweight Floor Impact Sound Level with Dynamic Stiffness and Thickness of EPS Type Resilient Materials vol.28, pp.6, 2018, https://doi.org/10.5050/KSNVE.2018.28.6.713