Acoustic performance of composite sandwich panels for building floors: Experimental tests and numerical-analytical simulation

Proença, M.; Sousa, A. Neves e; Garrido, Mário; Correia, João R.

doi:10.1016/j.jobe.2020.101751

Cited by 13 publications

(3 citation statements)

References 31 publications

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“…By trapping and dissipating sound waves, the foam layer reduces the amount of sound that is reflected back into the environment. The concrete layer, on the other hand, provides mass and stiffness, which can help to improve the low-frequency sound absorption of the panels (Proença et al, 2020).…”

Section: Reinforced Concrete Panelsmentioning

confidence: 99%

Study of Sound Absorbing Panels Used in Road Traffic

Chiriac,

Bujoreanu

2023

Bulletin of the Polytechnic Institute of Iași. Machine Constructions Section

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The noise pollution has a negative effect on the human body and in some situations, exposure to high levels of pollution can lead to serious health problems. Referring to current studies, we can see a high interest in finding solutions to reduce the effects of noise pollution, such as sound absorbing panels. The purpose of this paper is to present the current stage of development of sound absorbing panels and the absorption coefficient of the materials used. The article will provide information on different types of panels and materials used in their construction, as well as their mechanical properties. New discoveries in the field related to recyclable materials used in the construction of sound absorbing panels represent an additional point of interest, as the construction of such prototypes protects the environment. The use of waste in the construction process of sound absorbing panels can be considered sustainable a future method.

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Section: Reinforced Concrete Panelsmentioning

confidence: 99%

Study of Sound Absorbing Panels Used in Road Traffic

Chiriac,

Bujoreanu

2023

Bulletin of the Polytechnic Institute of Iași. Machine Constructions Section

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“…The element size and boundary conditions significantly impacted radiated sound power at low frequencies, and sound radiation above 50 Hz can be efficiently reduced using traditional strategies such as gravel in the cavity of the floor elements. Proença et al [16] investigate the acoustic performance of composite sandwich panels in building construction. Experimental and numerical tests are performed on a full-scale panel, confirming its overall low acoustic performance due to its light weight.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Vibroacoustic Response of Timber Floor Panels Damped with Porous Materials

Titirla,

Larbi

2023

Applied Sciences

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This research aims to investigate the impact of incorporating porous materials on reducing noise and vibration in wooden floor panels, and to analyze the vibroacoustic performance of the assembled panel under different types of excitation and boundary conditions, particularly in the lower frequency range. The study begins with an experimental investigation and numerical modeling to determine the mechanical properties of the orthotropic wood material used in the floor panels. Subsequently, a finite element formulation, based on a variational approach, is presented to study the vibroacoustic response of an elastic structure coupled with a porous material exhibiting realistic behavior. The porous material is characterized by two phases: solid and fluid, represented in the formulation through the displacement field for the solid phase and the pressure for the fluid phase. This formulation offers the advantage of reduced computation cost and simplifies the coupling between all domains. To calculate the acoustic radiation of the structure, the Rayleigh integral is employed. Utilizing the proposed numerical approach, a comprehensive study is conducted to analyze the reduction in vibration–acoustic response of the floor with the incorporated porous layer, taking into account different types of excitation and boundary conditions applied to the system.

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“…Therefore, researchers conducted some investigations on the acoustic analysis of composite structures. However, the main concerns were sound transmission mechanism, [7][8][9] numerical simulation method, [10][11][12][13] and composite acoustic design. [14][15][16] The influence of thermomechanical behavior on composite structures' STL is still a field of sporadic research.…”

Section: Introductionmentioning

confidence: 99%

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

Peng

Dong

Yan

2022

Journal of Low Frequency Noise, Vibration and Active Control

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An improved sound transmission loss (STL) experimental technique based on the sound pressure method (SPM) and acoustic box method is proposed to investigate the temperature influence on the STL of the ribbed carbon fiber reinforced plastics aircraft panel. SPM principle is given. The measurement procedure of the improved STL technique is presented and its reliability is verified. STL variable characteristics of the panel within −40°C–40°C were measured. Results showed that temperature had a significant effect on the panel’s STL. The overall STL varied nonlinearly with temperature, whereas STL exhibited a fluctuation or monotony trend at a single center frequency. Temperature variation caused changes of STL peak/dip frequencies and redistribution of stiffness-controlled, resonance-controlled, coincidence-controlled, and damping-controlled regions. The causes of the aforementioned are given. This study reveals the relationship between temperature, thermomechanical parameters and STL. The findings have applications in the design, measurement, analysis, and theoretical development of composite structure acoustics.

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Acoustic performance of composite sandwich panels for building floors: Experimental tests and numerical-analytical simulation

Cited by 13 publications

References 31 publications

Study of Sound Absorbing Panels Used in Road Traffic

Study of Sound Absorbing Panels Used in Road Traffic

Numerical Analysis of Vibroacoustic Response of Timber Floor Panels Damped with Porous Materials

Analysis of sound transmission loss characteristics of aircraft composite panel under variable temperature environment

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