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Journal Articles

Computation of the Alpha Cabin Sound Absorption Coefficient by Using the Finite Transfer Matrix Method (FTMM): Inter-Laboratory Test on Porous Media

Andrea Santoni, Paolo Bonfiglio, Patrizio Fausti, Francesco Pompoli
Journal: Journal of Vibration and Acoustics
Article Type: Research Papers
J. Vib. Acoust. April 2021, 143(2): 021012.
Paper No: VIB-20-1285
DOI: https://doi.org/10.1115/1.4048395
Published Online: October 5, 2020
...Andrea Santoni; Paolo Bonfiglio; Patrizio Fausti; Francesco Pompoli The transfer matrix method (TMM) has become an established and widely used approach to compute the sound absorption coefficient of a multilayer structure. Due to the assumption made by this method of laterally infinite media...
View Article titled, Computation of the Alpha Cabin <span class="search-highlight">Sound</span> <span class="search-highlight">Absorption</span> Coefficient by Using the Finite Transfer Matrix Method (FTMM): Inter-Laboratory Test on Porous Media
Click here to open pdf in another window PDF for Computation of the Alpha Cabin <span class="search-highlight">Sound</span> <span class="search-highlight">Absorption</span> Coefficient by Using the Finite Transfer Matrix Method (FTMM): Inter-Laboratory Test on Porous Media
Topics: Computation, Porous materials, Radiation (Physics), Sound absorption, Acoustics
Journal Articles

Underwater Acoustic Absorption of Composite Anechoic Layers With Inner Holes

Changzheng Ye, Xuewei Liu, Fengxian Xin, Tian Jian Lu
Journal: Journal of Vibration and Acoustics
Article Type: Research-Article
J. Vib. Acoust. August 2019, 141(4): 041006.
Paper No: VIB-18-1160
DOI: https://doi.org/10.1115/1.4042935
Published Online: April 18, 2019
...) on the sound absorption performance of an underwater rubber layer containing periodically distributed axial holes. A theoretical model is developed based on the method of transfer matrix as well as the concept of equivalent layering of holes with variable cross section. Numerical simulations with the method...
View Article titled, Underwater Acoustic Absorption of Composite Anechoic Layers With Inner Holes
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Topics: Absorption, Acoustics, Rubber, Sound absorption, Young's modulus, Density, Composite materials
Journal Articles

Sound Absorption Optimization of Graded Semi-Open Cellular Metals by Adopting the Genetic Algorithm Method

H. Meng, F. X. Xin, T. J. Lu
Journal: Journal of Vibration and Acoustics
Article Type: Research-Article
J. Vib. Acoust. December 2014, 136(6): 061007.
Paper No: VIB-13-1225
DOI: https://doi.org/10.1115/1.4028377
Published Online: September 11, 2014
.... Nonetheless, the thickness of each layer may still be estimated using Eq. (1) . With the pore size distributions listed in Table 3 , the predicted sound absorption coefficient of semi-open cellular metals are presented in Figs. 9 and 10 for sole-frequency optimization and frequency-range...
View Article titled, <span class="search-highlight">Sound</span> <span class="search-highlight">Absorption</span> Optimization of Graded Semi-Open Cellular Metals by Adopting the Genetic Algorithm Method
Click here to open pdf in another window PDF for <span class="search-highlight">Sound</span> <span class="search-highlight">Absorption</span> Optimization of Graded Semi-Open Cellular Metals by Adopting the Genetic Algorithm Method
Topics: Metals, Optimization, Porosity, Sound absorption, Genetic algorithms