Abstract
This paper investigates the vibration and acoustic characteristics of an aluminium-silicon carbide (Al-SiC) simply supported composite plate under thermal loads. The vibrational response induced by the temperature rise is analysed using Kirchhoff’s plate theory and the weighted integral (Galerkin) method. Additionally, the plate is acoustically modelled in conjunction with the air medium to investigate its acoustic response. The acoustic far-field radiation equation determines the plate’s sound pressure level (SPL). The findings reveal that the MMC I (65% SiC/A356.2 MMC SiC particulates reinforced, with three different sizes) plate exhibits a lower overall sound pressure level in the lower frequency range than other MMCs. Moreover, replacing the aluminium plate with the MMC I plate reduces the overall sound pressure level by 5.54 dB due to the high stiffness associated with the mixture of silicon carbide reinforcement in the aluminium matrix.
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