Progressive Impedance Method for the classical analysis of acoustic transmission loss in multilayered walls

Fringuellino, Marco; Guglielmone, Claudio

doi:10.1016/s0003-682x(99)00024-9

Cited by 22 publications

(11 citation statements)

References 6 publications

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“…Fringuellino et al [6] calculated the transmission loss in multi-layered walls using a simplified approach based on the prior knowledge of the characteristic impedance of each material layer. Bolton et al [7] described a theory for multi-dimensional wave propagation in elastic porous material, based on Biot's theory, and used it to predict the airborne sound insulation provided by foam-lined panels.…”

Section: Introductionmentioning

confidence: 99%

Prediction of airborne sound and impact sound insulation provided by single and multilayer systems using analytical expressions

et al. 2007

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In this work, the authors use analytical solutions to assess the airborne sound and impact insulation provided by homogeneous partitions that are infinite along their plane. The algorithm uses Green's functions, derived on the basis of previous work by the authors on the prediction of airborne sound insulation provided by single and double panels. The model is now extended to handle multilayer systems, allowing the simulation of three-dimensional loads applied in both the acoustic and solid media.The model is validated against experimental results and compared with simplified expressions for single, double and triple panels. The results provided by the analytical model were found to provide a good agreement with the experimental results, except in the vicinity of the coincidence effect in the presence of thicker panels.The applicability of the proposed tool is then illustrated by analyzing the acoustic behavior provided by single layers and by a suspended ceiling. Different variables are studied, such as the mass, the stiffness of the layers, the position and direction of the load within the elastic medium and the presence of porous material in the fluid layers. It was found that the model is able to simulate the acoustic phenomena involved in single and multilayer systems.

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Section: Introductionmentioning

confidence: 99%

Prediction of airborne sound and impact sound insulation provided by single and multilayer systems using analytical expressions

et al. 2007

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“…Such a sandwich structure, which separates the substrate layer, can weaken the sound transmission in the resonance and coincidence regions. On the basis of above works, materials with multilayered structure have been designed 11–13. In these materials, the multilayered interfaces lead to the multiple reflection of acoustic waves, and the internal layers have multiform deformation, such as tension, compressing, and shearing that can dissipate more acoustic energy.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretic studies on sound transmission loss of laminated mica‐filled poly(vinyl chloride) composites

Wang¹,

You²,

Zhang³

et al. 2011

J of Applied Polymer Sci

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The effects of dioctyl phthalate and inorganic filler, mica, on the sound insulation property of poly(vinyl chloride) (PVC) were investigated in this work. The stiffness and mass laws, which are the common theoretic tools to predict the soundproof properties of materials, were used to analyze the sound transmission loss (STL). The experimental results revealed that the stiffness and mass laws can describe well the sound insulation property of PVC/mica composites. The stiffness and surface density are important factors influencing the improve-ment of STL. With the increase of content of mica, STL and resonance frequency, f mn , of PVC/mica composites increase. Moreover, the change of STL in the stiffnesscontrolled region is more obvious than that in the masscontrolled region, because the addition of mica in PVC leads to a greater increase in the stiffness.

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“…The widespread use of lightweight panels in various spheres of engineering, ranging from the construction of buildings to the car, shipbuilding and aerospace Applied Acoustics 65 (2004) [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] www.elsevier.com/locate/apacoust industries, has aroused considerable interest in their capacity for acoustic insulation. Research teams have been working for many years on the development of analytical and numerical techniques for determining how these construction elements perform acoustically.…”

Section: Introductionmentioning

confidence: 99%

“…The second model simulates the double wall as two bending plates coupled by an elastic layer characterized by uncoupled springs, ignoring the contribution of the shear stiffness. Work by Fringuelino et al [17] used a simplified approach based on the prior knowledge of the characteristic impedance of each material layer to compute the transmission loss across multi-layered walls. Sound transmission through foam lined panel structures was analyzed by Bolton [18], using a theory for multi-dimensional wave propagation in elastic porous materials based on Biot's theory.…”

Section: Introductionmentioning

confidence: 99%

Sound insulation provided by single and double panel walls—a comparison of analytical solutions versus experimental results

2004

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Progressive Impedance Method for the classical analysis of acoustic transmission loss in multilayered walls

Cited by 22 publications

References 6 publications

Prediction of airborne sound and impact sound insulation provided by single and multilayer systems using analytical expressions

Prediction of airborne sound and impact sound insulation provided by single and multilayer systems using analytical expressions

Experimental and theoretic studies on sound transmission loss of laminated mica‐filled poly(vinyl chloride) composites

Sound insulation provided by single and double panel walls—a comparison of analytical solutions versus experimental results

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