A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High frequency acoustic transmission loss of perforated plates at normal incidence
A study has been conducted on the transmission loss of perforated plates at normal incidence. The investigation includes a theoretical analysis of the problem with validation through experimentation. The experiments comprised microphone measurements of transmission loss for 11 perforated plates with variable thickness, hole size, and porosity. The theoretical model is based on planar wave propagation through a single contraction/expansion chamber with modifications to account for hole interaction effects. The resulting formula for transmission loss yields superior predictions over past theories for the range of properties investigated. Deviations between experimental measurements and theoretical predictions of transmission loss are less than about 1.5 dB for dimensionless hole diameter dlλ < 0.5. The accuracy of the model does not show a strong dependence on plate thickness-to-diameter ratio or porosity.
High frequency acoustic transmission loss of perforated plates at normal incidence
A study has been conducted on the transmission loss of perforated plates at normal incidence. The investigation includes a theoretical analysis of the problem with validation through experimentation. The experiments comprised microphone measurements of transmission loss for 11 perforated plates with variable thickness, hole size, and porosity. The theoretical model is based on planar wave propagation through a single contraction/expansion chamber with modifications to account for hole interaction effects. The resulting formula for transmission loss yields superior predictions over past theories for the range of properties investigated. Deviations between experimental measurements and theoretical predictions of transmission loss are less than about 1.5 dB for dimensionless hole diameter dlλ < 0.5. The accuracy of the model does not show a strong dependence on plate thickness-to-diameter ratio or porosity.
High frequency acoustic transmission loss of perforated plates at normal incidence
Phong, Vincent (author) / Papamoschou, Dimitri (author)
Journal of the Acoustical Society of America ; 134 ; 1090-1101
2013
12 Seiten, 13 Bilder, 1 Tabelle, 31 Quellen
Article (Journal)
English
Sound Transmission Loss of Thick Perforated Panels
| SAGE Publications | 2001
Sound Transmission Loss of Thick Perforated Panels
| British Library Online Contents | 2001