Acoustic performance and compression behaviour of perforated aluminium foam

McRae, Joe D.; Naguib, Hani E.; Atalla, Noureddine

doi:10.1117/12.776467

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…As a multifunctional material, aluminum foam is one of the main characteristics of sound absorption, its high-frequency sound absorption performance is excellent, but its low-frequency sound absorption ability is poor. Liang, Yao, etc [1][2] and other scholars [3][4][5] investigated the sound absorption performance of the perforated closed-cell aluminum foam. At the same time, some scholars have studied the sound absorption performance of the combination structure of the open-cell aluminum foam and glass wool and found that it has excellent performance, but glass wool is not damp resistant and has poor rigidity.…”

Section: Introductionmentioning

confidence: 99%

Study on Sound Absorption Performance of Aluminum Foam Combination

Jiang

Wang

Lian

et al. 2023

J. Phys.: Conf. Ser.

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Aluminum foam is a kind of new material with a large number of holes distributed in aluminum alloy. It has the characteristics of lightweight, sound absorption, energy absorption and vibration reduction, and other porous materials. Aluminum foam has good acoustic performance. However, its excellent sound absorption ability is only reflected in the middle and high-frequency bands. Besides, the low-frequency sound absorption ability is very poor and the frequency band is narrow. Therefore, in this paper, different types of perforated aluminum foams with different parameters are combined to explore the influence on acoustic performance and find that the combination of large porosity perforated sample and aluminum foam has a better sound absorption effect. The unperforated sample is placed in front of the perforated sample to improve the sound absorption coefficient of the low and medium frequencies. Finally, different types of perforated aluminum foam samples were properly combined, and it was found through the test that almost all sound waves in the band of 1200 HZ~2000 Hz could be absorbed by the combined structure.

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Section: Introductionmentioning

confidence: 99%

Study on Sound Absorption Performance of Aluminum Foam Combination

Jiang

Wang

Lian

et al. 2023

J. Phys.: Conf. Ser.

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“…However, their study was limited to the larger hole size and did not explore the effect of the small hole on the acoustic performance. In this paper, using high-speed electric discharge (EDM) drilling technology [3][4][5][6] , small holes with different parameters were fabricated in closed-cell aluminum foam, and the influence of tiny holes on their acoustic performance was investigated. The optimal parameter combination of some closed-cell aluminum foam drilling was found, which made a contribution to the acoustic application of aluminum foam.…”

Section: Introductionmentioning

confidence: 99%

Study on sound absorption properties of closed cell aluminum foam with different microporous structures

Jiang

Wang

Lian

et al. 2023

J. Phys.: Conf. Ser.

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With the rapid development of modern society, environmental pollution is increasingly serious, among which noise pollution has become the world’s three major. At present, the methods to solve the noise problem are becoming more and more diverse. Among them, the use of porous materials for sound absorption and noise reduction is still one of the most important ways. Open-cell aluminum foam has high manufacturing costs and limited application scenarios. Therefore, some scholars have studied low-cost closed-cell aluminum foam, hoping to improve its sound absorption coefficient. Closed-cell aluminum foam is mainly used in sound insulation and has little sound absorption ability. For improving closed-cell aluminum foam sound absorption property, some scholars have researched the influence of mechanical perforation on the acoustic property of aluminum foam, but the sound absorption potential of small holes cannot be played due to the large aperture made during the process. Therefore, this paper designs and processes different aluminum foam sound absorption structures based on high-speed EDM technology and studies the effect of perforation aperture, perforation depth, and perforation rate on sound absorption peak value and sound absorption coefficient in low and middle-frequency bands (250HZ-2000Hz).

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Acoustic performance and compression behaviour of perforated aluminium foam

Cited by 2 publications

References 12 publications

Study on Sound Absorption Performance of Aluminum Foam Combination

Study on Sound Absorption Performance of Aluminum Foam Combination

Study on sound absorption properties of closed cell aluminum foam with different microporous structures

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