Effect of porous material compression on the sound transmission of a covered single leaf panel

Campolina, Bruno; Lanfranchi, Vincent; Atalla, Noureddine; Doutres, Olivier

doi:10.1016/j.apacoust.2012.02.013

Cited by 19 publications

(7 citation statements)

References 18 publications

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“…5(a). Indeed, it is well known that frame compression results in an increase of airflow resistivity and tortuosity since the various struts and remaining membranes are brought nearer from each other [24,25]. These results show that the proposed reticulation method can be used to tune the resistive behavior of closed-cell foams depending on the final application of the foam material.…”

Section: Influence Of Shock Strengthmentioning

confidence: 59%

Using shock waves to improve the sound absorbing efficiency of closed-cell foams

Doutres¹,

Atalla²,

Brouillette³

et al. 2014

Applied Acoustics

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Producing closed-cell foams is generally cheaper and simpler than open-cell foams.However, the acoustic and filtration efficiency of closed-cell foam materials is generally poor because it is very difficult for fluid or acoustic waves to penetrate into the material. A new method using shock waves to remove the membranes closing the cell pores (known as reticulation) and thus to improve the acoustic and filtration behavior of closed-cell foam material is presented. Various shock treatments have been carried out on polyurethane and polyimide foams and the following conclusions were drawn: (1) reticulation efficiency increased and thus the airflow resistivity and tortuosity decreased when increasing the amplitude of the shock treatment; (2) the rigidity of the foam is decreased; (3) the process is reliable and repeatable and (4) obtained acoustic performance is comparable to classical thermal reticulation.

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Section: Influence Of Shock Strengthmentioning

confidence: 59%

Using shock waves to improve the sound absorbing efficiency of closed-cell foams

Doutres¹,

Atalla²,

Brouillette³

et al. 2014

Applied Acoustics

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“…As another aspect, Campolina et al. [37] compressed porous material to obtain the STL of a covered single-leaf panel. It is noteworthy that the offered model was efficient only for low compression rates.…”

Section: Methodsmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

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This study collects all of the existent papers in the field of acoustic transmission across multilayered plate constructions. Herewith, a comprehensive source is proposed wherein approximately 410 references are reviewed and described from the first [Formula: see text] to [Formula: see text]. In the first part, in addition to the presentation of a complete explanation about the importance of the acoustic analysis of these structures, appropriate formulations are also provided. Furthermore, an overview of the thematic correspondent is carried out. Since the type of material used in these constructions can be very important in sound insulation, the significance of this subject is remarked. The papers are then classified based on their acoustic excitation fields containing plane wave, diffuse, random, and point source. After analyzing the research approaches according to different environmental properties, the articles are ordered based on their boundaries as finite and infinite. To present reliable outcomes, it is necessary to investigate a proper theory proportional to the structure’s thickness. Herewith, this issue is also discussed in detail. The review is also expanded to focus on the different vibroacoustic solutions. Before concluding remarks, the authors' research works are presented wherein either optimization algorithms or control techniques improve the acoustic performance of these structures.

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“…Campolina et al. [37] employed porous material as an intermediate layer through double-walled plate. Next, this process was followed by Son and Kang [38] in various boundary configurations.…”

Section: Introductionmentioning

confidence: 99%

“…This issue had been remarked earlier by Faust and Piret [36] so that a diffuse filed incidence was known as the simplest way to present the acoustic environment. Campolina et al [37] employed porous material as an intermediate layer through double-walled plate. Next, this process was followed by Son and Kang [38] in various boundary configurations.…”

Section: Introductionmentioning

confidence: 99%

Multi-objective optimization approach on diffuse sound transmission through poroelastic composite sandwich structure

Talebitooti

Zarastvand

Darvishgohari

2019

Jnl of Sandwich Structures & Materials

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Multi-objective vibroacoustic optimization of the double-walled doubly curved composite shells having poroelastic lining in its core in a diffuse field is performed based on Non-dominated sorting Genetic Algorithm-II. To present an analytical model on the basis of multi-objective optimization, the summation of sound transmission loss and transverse displacement along with weight of the structure are considered as two cost functions, which should be optimized in a diffuse field. In fact, the significant achievement of this work is to design an optimization algorithm to improve vibroacoustic fitness and weight of the sandwich doubly curved shells. In the first part of the paper, a general formulation is prepared to analyze the dynamic of the poroelastic composite sandwich structures. Likewise, some validation configurations are presented to confirm the accuracy of the current formulation. Consequently, an optimization algorithm is provided on the basis of considering some appropriate design variables including material and porous types as well as stacking sequences. In this regard, a batch of 19 benchmarks of porous core is investigated. Furthermore, a configuration of optimized points in the Pareto front is plotted in which the simultaneous effects of optimizing the weight and vibroacoustic fitness can be observed. As a result, a new approach is made through optimization of the transverse displacement of the structure as a function of various incidence and azimuth angles in three dimensional configurations with respect to different frequencies.

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Effect of porous material compression on the sound transmission of a covered single leaf panel

Cited by 19 publications

References 18 publications

Using shock waves to improve the sound absorbing efficiency of closed-cell foams

Using shock waves to improve the sound absorbing efficiency of closed-cell foams

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Multi-objective optimization approach on diffuse sound transmission through poroelastic composite sandwich structure

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