Improving the Morphological Parameters of Aluminum Foam for Maximum Sound Absorption Coefficient using Genetic Algorithm

Jafari, Mohammad Javad; Sharak, Mohsen Niknam; Khavanin, Ali; Ebadzadeh, T.; Fazlali, Mahmood; Madvari, Rohollah Fallah

doi:10.32604/sv.2021.09729

Cited by 6 publications

(10 citation statements)

References 27 publications

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“…The benchmarking method was used to compare the coded results with the coded results in the Lu article. According to the results obtained, there was a good agreement between the coding of the results of the Lu model [ 25 ]. The optimization of genetic algorithm was performed using competition method (tournament) by selecting members to produce offspring and applying mutations.…”

Section: Methodsmentioning

confidence: 92%

“…In the previous study ( https://doi.org/10.32604/sv.2021.09729 ) [ 25 ], at first, the models of sound propagation in the porous absorbers of metal foams was investigated and according to the objectives and possibilities, the Lu model was selected. Using a genetic algorithm, the parameters affecting the SAC such as Ω, D and d of the pore were optimized.…”

Section: Methodsmentioning

confidence: 99%

“…Population equal to 50; Generation percentage 80%; Mutation percentage 30%; The mutation rate was set to 0.02 and the number of replicates to 150. Also, the Uniform Crossover method was used for the generation process [ 25 ].…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Optimized design and experimental validation of sound absorption coefficient performance in aluminium metal foam by spark plasma sintering

Jafari

Madvari

Ebadzadeh

2023

Heliyon

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Section: Methodsmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Optimized design and experimental validation of sound absorption coefficient performance in aluminium metal foam by spark plasma sintering

Jafari

Madvari

Ebadzadeh

2023

Heliyon

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“…The aluminum alloy foam shows a variety of unique properties, such as lightweight, shock-absorbing ability, soundabsorbing ability, and thermal isolating ability, which are suitable for the aforementioned requirements, owing to its closed cell structure inside the foam [1,2]. Because of these properties, aluminum alloy foams have already been put to practical use and have been studied in various fields, such as architectural materials, crash-absorbing materials in automobiles, heat insulators, and acoustic materials [3][4][5][6][7][8][9][10][11]. It is well known that these properties are easily lowered due to the non-uniformity of the pore structure in the foam.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Pore Morphology in Aluminum Alloy Foams Fabricated by Semi-Solid Route among Multiple Experimental Runs

Takamatsu,

Arai,

Sayama

et al. 2023

Metals

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A semi-solid route is expected to be a fabrication method that can fabricate aluminum alloy foams with a variety of mechanical properties, but the allowance fluctuation of the fabrication conditions of aluminum alloy foams with high reproducibility is not clear. The objective of this study was to reveal the allowance fluctuation between the setting temperature and the actual temperature of the melt to fabricate stable foams, having pores with small pores and high circularity, and the influence of the increasing volume fraction of the solid on the pore morphology. Al-Si alloy foams were fabricated five times by adding a blowing agent into a semi-solid slurry under the same setting fabrication conditions, such as the temperature and concentration of oxygen in the atmosphere. The results of small relative standard deviations of pore diameter and circularity indicated that the conducted fabrication process had high reproducibility, even if the volume fraction of the solid changed in a range of 5%. When the volume fraction of the solid exceeds the minimal fraction of primary crystals for prevention of drainage, the clogging effect works more efficiently because the ratio of clogged cell walls increases. Additionally, the preferred range of the volume fraction of the solid for the fabrication of stable foam was revealed to be around 15% to 35%.

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“…In the previous studies (Jafari et al, 2020;2021), the morphological parameters of metal foam were optimised using the local search algorithm and genetic algorithm. Using the results obtained from the PSO in this work and previous studies, readers who are looking for a suitable algorithm for making optimised metal foam can more easily choose from the proposed algorithms.…”

Section: Introductionmentioning

confidence: 99%

Archives of Acoustics

Madvari,

Sharak,

Tehrani

et al. 2022

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The study aims to estimate metal foam microstructure parameters for the maximum sound absorption coefficient (SAC) in the specified frequency band to obtain optimum metal foam fabrication. Lu's theory model is utilised to calculate the SAC of metallic foams that refers to three morphological parameters: porosity, pore size, and pore opening. After Lu model validation, particle swarm optimisation (PSO) is used to optimise the parameters. The optimum values are obtained at frequencies 250 to 8000 Hz, porosity of 50 to 95%, a pore size of 0.1 to 4.5 mm, and pore opening of 0.07 to 0.98 mm. The results revealed that at frequencies above 1000 Hz, the absorption efficiency increases due to changes in the porosity, pore size, and pore opening values rather than the thickness. However, for frequencies below 2000 Hz, increasing the absorption efficiency is strongly correlated with an increase in foam thickness. The PSO is successfully used to find optimum absorption conditions, the reference for absorbent fabrication, on a frequency band 250 to 8000 Hz. The outcomes will provide an efficient tool and guideline for optimum estimation of acoustic absorbents.

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Improving the Morphological Parameters of Aluminum Foam for Maximum Sound Absorption Coefficient using Genetic Algorithm

Cited by 6 publications

References 27 publications

Optimized design and experimental validation of sound absorption coefficient performance in aluminium metal foam by spark plasma sintering

Optimized design and experimental validation of sound absorption coefficient performance in aluminium metal foam by spark plasma sintering

Characteristics of Pore Morphology in Aluminum Alloy Foams Fabricated by Semi-Solid Route among Multiple Experimental Runs

Archives of Acoustics

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