Sound Absorption of Open-celled Gradual Porous Aluminum Alloy
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Abstract
To promote the sound absorption performance at different frequencies,gradual porous aluminium alloy was processed via pressure infiltration.The correlation between sound absorption and morphological parameters such as grads and thickness had been studied.The results show that the sound absorption property of gradual porous aluminium alloy is improved by about 55% compared with normal porous aluminium alloy.
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