Power transmission through double-walled laminated composite panels considering porous layer-air gap insulation

Ranjbar, Behzad; Ahmadi, R.; Shojaeifard, M H; Talebitooti, Roohollah

doi:10.1007/s10483-014-1877-7

Cited by 11 publications

(3 citation statements)

References 15 publications

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“…Vibration analysis of functionally graded plates with uniform porosity and uneven distribution was presented by Wang et al (2017). Shojaeifard et al (2014) studied the transmission of power through infinite double-walled multilayer sandwich structures using Biot’s theory for wave propagation in a porous layer. Xin and Lu (2011) examined the STL in a three-layer finite-state sandwich structure.…”

Section: Introductionmentioning

confidence: 99%

Sound transmission loss in functionally graded porous metastructural plate with absorber

Taghipour

Dardel

2023

Journal of Vibration and Control

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In the present work, sound transmission loss (STL) of two plates functionally graded sandwich structures with a porous core is studied. The plates are modeled by first-order shear deformation theory. To obtain an acoustic metamaterial plate with the greatest STL, a functionally graded porous (FGP) plate with a tuned mass damper absorber is used. The obtained results show that using a FGP plate or using only an absorber is sufficient for increasing sound transmission loss, but the simultaneous use of them is effective in higher frequencies.

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Section: Introductionmentioning

confidence: 99%

Sound transmission loss in functionally graded porous metastructural plate with absorber

Taghipour

Dardel

2023

Journal of Vibration and Control

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“…Talebitooti et al [14] predicted the effect of the sandwiching porous material on power transmission of the double-walled panels investigating Classical Laminated Plate Theory. Subsequently, full method was employed in another research work [15] to designate acoustic transmission of the double-walled panels sandwiching a layer of air-gap insulation. In an analytical model suggested by Nentwich et al [16], the acoustic behavior of the sandwich structure subjected to honeycomb core was analyzed.…”

Section: Introductionmentioning

confidence: 99%

Investigation of three-dimensional theory on sound transmission through compressed poroelastic sandwich cylindrical shell in various boundary configurations

Talebitooti

Khameneh

Zarastvand

et al. 2018

Jnl of Sandwich Structures & Materials

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The present work applies three-dimensional elasticity theory as well as extended full method based on Biot’s theory to inspect the effect of compressing porous material on sound transmission loss of the multilayered cylindrical shell subjected to porous core and air-gap insulation in the presence of external flow considering various boundary configurations. According to this fact, first, three-dimensional elasticity theory is employed for the double-walled laminated composite parts of the structure which leads to governing equations with no extra assumptions as well as considering extended full method for poroelastic section which models the structure in three directions with no need to identify the frequency domain (unlike the simplified method). Consequently, the obtained equations are solved applying state space method based on approximate laminate model beside transfer matrix approach. Likewise, the procedure is followed to obtain sound transmission loss in appropriate boundary condition. Second, the influence of compressing porous core on acoustic transmission of the current structure is cleared. Furthermore, this paper includes some configurations which compare the obtained results with those available in literature to indicate the accuracy, reliability and simplicity of the present method particularly in comparison with the simplified method. Finally, some configurations are appeared in numerical result section to show the effects of the various parameters on sound transmission loss.

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“…Figures 4(d), the plane distance of three lattice planes in the big grain are d = 0.3245 nm, d = 0.2481 nm and d = 0.2501 nm respectively, the lattice plane angles are 66.8° and 68.1° respectively, matched with the ( plane of FeAl 3 when observing along the crystal zone axis[111][15,16,17]. In the aluminum alloys with iron content of 1.5% the iron-rich phases are dominated by FeAl 3 phase and the polymorphs are intact, which is consistent with the aforementioned XRD results.…”

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confidence: 99%

Apparent Morphology and Structure of Iron-Rich Phase in Aluminum Alloy

Wang

et al. 2016

MSF

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This work extracted the iron-rich phases in aluminium alloy containing the iron of 0.3%, 0.6%, 1%, 0.6%, 2% and 5% respectively, and studied the morphology and the structure of the iron-rich phases by using electrolytic extraction technology. The results showed that the iron-rich phase in aluminium alloy is a large number of alpha - Al3Fe and a small amount of lambda - Al13Fe4; the rich iron phases are distributed in aluminum alloy substrate in three-dimensional space, and its metallographic appearances in different sections present sheet, plate and needle-like structure. High resolution electron microscopy shows that lambda - Al13Fe4 and alpha - Al3Fe are tetrahedral structure, and when iron content is 0.3% - 1%, the iron-rich phase transition of lambda - Al13Fe4 to alpha - Al3Fe is influenced by iron content, and alpha - Al3Fe lattice constants a and c are bigger than that of standard value under 0.3% iron content, and alpha - Al3Fe lattice constant a changes little with the increase of iron content, and the lattice constant c becomes larger along with the increase of iron content, and when the iron content is up to 1%, the lattice constant a and c are gradually stabilized; lambda - Al13Fe4 lattice constant a and c are constant.

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Power transmission through double-walled laminated composite panels considering porous layer-air gap insulation

Cited by 11 publications

References 15 publications

Sound transmission loss in functionally graded porous metastructural plate with absorber

Sound transmission loss in functionally graded porous metastructural plate with absorber

Investigation of three-dimensional theory on sound transmission through compressed poroelastic sandwich cylindrical shell in various boundary configurations

Apparent Morphology and Structure of Iron-Rich Phase in Aluminum Alloy

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