On the Design of Perforated Facings for Acoustic Materials

Autor:	Richard H. Bolt
Rok vydání:	1947
Předmět:	Absorption (acoustics) Materials science Acoustics and Ultrasonics Arts and Humanities (miscellaneous) Chart Design charts Acoustics Acoustic impedance
Zdroj:	The Journal of the Acoustical Society of America. 19:917-921
ISSN:	0001-4966
DOI:	10.1121/1.1916641
Popis:	An approximate analysis of the acoustic behavior of perforated facings for absorptive materials is outlined and is reduced to a design chart. Only the mass reactances of the holes and of the facing material are included in the analysis. This simplified picture is adequate for many practical problems, but breaks down for certain conditions which are discussed. If the acoustic impedance of the unfaced material is known, absorption coefficients for the material with perforated facing can be read directly from the chart.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::feff1a99c74c0f0fae92ee26c7f16002 https://doi.org/10.1121/1.1916641 Zobrazit plný text záznamu