Experimental and Theoretical Analysis of Sound Absorption Properties of Finely Perforated Wooden Panels
AbstractPerforated wooden panels are typically utilized as a resonant sound absorbing material in indoor noise control. In this paper, the absorption properties of wooden panels perforated with tiny holes of 1–3 mm diameter were studied both experimentally and theoretically. The Maa-MPP (micro perforated panels) model and the Maa-Flex model were applied to predict the absorption regularities of finely perforated wooden panels. A relative impedance comparison and full-factorial experiments were carried out to verify the feasibility of the theoretical models. The results showed that the Maa-Flex model obtained good agreement with measured results. Control experiments and measurements of dynamic mechanical properties were carried out to investigate the influence of the wood characteristics. In this study, absorption properties were enhanced by sound-induced vibration. The relationship between the dynamic mechanical properties and the panel mass-spring vibration absorption was revealed. While the absorption effects of wood porous structure were not found, they were demonstrated theoretically by using acoustic wave propagation in a simplified circular pipe with a suddenly changed cross-section model. This work provides experimental and theoretical guidance for perforation parameter design. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Song, B.; Peng, L.; Fu, F.; Liu, M.; Zhang, H. Experimental and Theoretical Analysis of Sound Absorption Properties of Finely Perforated Wooden Panels. Materials 2016, 9, 942.
Song B, Peng L, Fu F, Liu M, Zhang H. Experimental and Theoretical Analysis of Sound Absorption Properties of Finely Perforated Wooden Panels. Materials. 2016; 9(11):942.Chicago/Turabian Style
Song, Boqi; Peng, Limin; Fu, Feng; Liu, Meihong; Zhang, Houjiang. 2016. "Experimental and Theoretical Analysis of Sound Absorption Properties of Finely Perforated Wooden Panels." Materials 9, no. 11: 942.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.