Sound transmission loss of double-walled sandwich cross-ply layered magneto-electro-elastic plates under thermal environment

Refahati, Nima; Jearsiripongkul, Thira; Thongchom, Chanachai; Saffari, Peyman Roodgar; Saffari, Pouyan Roodgar; Keawsawasvong, Suraparb

doi:10.1038/s41598-022-20965-3

Cited by 13 publications

(5 citation statements)

References 64 publications

(54 reference statements)

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“…Air-borne noise was omitted from the SEA model due to the absence of dedicated testing focused solely on the air-borne path, such as knowledge about the transmission loss of the panels [20]. In this context, a comparison is drawn between the results of the SEA model and the structure-borne noise analysis conducted using ATPA.…”

Section: Results Of Sea Vs Atpamentioning

confidence: 99%

A Comparative Study of a Hybrid Experimental–Statistical Energy Analysis Model with Advanced Transfer Path Analysis for Analyzing Interior Noise of a Tiltrotor Aircraft

Sohrabi,

Segura Torres,

Cierco Molins

et al. 2023

Applied Sciences

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The excessive noise present within an aircraft cabin during flight operations constitutes a notable origin of fatigue, stress, and communication impediments for both pilots and passengers. Ensuring the comfort, well-being, and safety of passengers and crew members necessitates the accurate anticipation of noise levels. This study concerns the computation of structure-borne noise levels within the cabin of a tiltrotor aircraft. This investigation employed two distinct methodologies: advanced transfer path analysis (ATPA) and statistical energy analysis (SEA). To assess the results obtained with the ATPA approach, the acquired outcomes were compared with empirically measured sound pressure levels during airplane mode operations. The contributions of air-borne and structure-borne noises were calculated with the ATPA methodology. On the other hand, the structure-borne noise was calculated with a hybrid experimental–SEA model with ACTRAN software, and its results were compared with those of the ATPA method. The results show a good agreement between these methods at high frequencies, while at low frequencies, certain adjustments or modifications to the SEA model are necessary to predict the noise levels.

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Section: Results Of Sea Vs Atpamentioning

confidence: 99%

A Comparative Study of a Hybrid Experimental–Statistical Energy Analysis Model with Advanced Transfer Path Analysis for Analyzing Interior Noise of a Tiltrotor Aircraft

Sohrabi,

Segura Torres,

Cierco Molins

et al. 2023

Applied Sciences

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“…As seen in the estimation comparison in Figure 14, the average source depth estimation value was 79.69 m, which was consistent with the actual source depth of 80 m, and the average estimation error of the experiment was only 0.45%. However, due to the diversity and uniqueness of other source depth estimation methods, the environment and experimental parameters [25] of each method are different, so it is difficult to conduct a controlled experiment with two different methods. The following briefly introduces the performance of the traditional method MFP and makes a comparison with the method proposed in this paper.…”

Section: Methodsmentioning

confidence: 99%

“…Compared with MFP, the method in this paper has lower requirements on the accuracy of environmental parameters when running a simulation, and environmental parameters do not need to be known if we collect mode information through vertical arrays in real marine environments. Vertical array data collection is closer However, due to the diversity and uniqueness of other source depth estimation methods, the environment and experimental parameters [25] of each method are different, so it is difficult to conduct a controlled experiment with two different methods. The following briefly introduces the performance of the traditional method MFP and makes a comparison with the method proposed in this paper.…”

Section: Methodsmentioning

confidence: 99%

A Method for Estimating Source Depth Based on the Adjacent Mode Group Acoustic Pressure Field

Li,

Wang

et al. 2023

Applied Sciences

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In order to effectively estimate the depth of the source in the acoustic pressure field, this study investigated the relationship between the distribution of acoustic pressure fields in different adjacent mode groups and the depth of the source in shallow waveguides and proposed a method to estimate the depth of the source on the basis of the adjacent mode group acoustic pressure field. We first derived and calculated the adjacent mode group acoustic pressure field of a typical shallow waveguide, then verified the accuracy of this derivation process through simulations. In addition, combined with singular value decomposition mode extraction, the adjacent mode group acoustic pressure field of the SACLANT experimental data was obtained and used as a comparative parameter for the method presented in this paper. By using the depth of the source as the estimation variable, a simulated annealing algorithm and related parameters were designed, and the feasibility of this method was verified through simulation and experiments. The proposed method achieved a higher localization accuracy without the need for accurate modeling of underwater acoustic channels. Under the conditions of the simulation environment, the average estimation error rate of the method was 0.24%, and with increases in the temperature coefficient and Markov chain length, the average estimation error rate of the method decreased. In the experimental environment, the average estimation error rate of the method was 0.45%. This study provides a method to obtain the depth of source in a shallow waveguide via the adjacent mode group acoustic pressure field.

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“…These fluids are commonly used to study the behavior of certain polymeric fluids. For instance, Refahati et al in [10] investigated the sound transmission characteristics of a double-walled sandwich magneto-electro-elastic cross-ply layered plate resting on viscoelastic medium in thermal environment. Moreover, the molecular dynamics of gallium nitride nano-sheets under tensile loads are investigated in [11].…”

Section: Introductionmentioning

confidence: 99%

MHD Free Convection Flows for Maxwell Fluids over a Porous Plate via Novel Approach of Caputo Fractional Model

Aslam,

Zafar,

Shah

et al. 2023

Symmetry

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The ultimate goal of the article is the analysis of free convective flow of an MHD Maxwell fluid over a porous plate. The study focuses on understanding the dynamics of fluid flow over a moving plate in the presence of a magnetic field, where the magnetic lines of force can either be stationary or in motion along the plate. Further, we will investigate the heat and mass transfer characteristics of the system under specific conditions: constant species and thermal conductivity as functions of time. The study involves a symmetric temperature distribution that provides heat on both sides of the plane. Our analysis includes the study of the model for different instances of plate motion and variations in temperature. The fluid dynamics of the system are mathematically described using a system of fractional-order partial differential equations. To make the model independent of geometric units, dimensionless variables are introduced. Moreover, we employ the concept of fractional-order derivative operators in the sense of Caputo, which introduces a fractional dimension to the equations. Additionally, the integral Laplace transform and numerical algorithms are utilized to solve the problem. Finally, by using graphical analysis the contribution of physical parameters on the fluid dynamics is discussed and valuable findings are documented.

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Sound transmission loss of double-walled sandwich cross-ply layered magneto-electro-elastic plates under thermal environment

Cited by 13 publications

References 64 publications

A Comparative Study of a Hybrid Experimental–Statistical Energy Analysis Model with Advanced Transfer Path Analysis for Analyzing Interior Noise of a Tiltrotor Aircraft

A Comparative Study of a Hybrid Experimental–Statistical Energy Analysis Model with Advanced Transfer Path Analysis for Analyzing Interior Noise of a Tiltrotor Aircraft

A Method for Estimating Source Depth Based on the Adjacent Mode Group Acoustic Pressure Field

MHD Free Convection Flows for Maxwell Fluids over a Porous Plate via Novel Approach of Caputo Fractional Model

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