Comparative sound absorption performance of wood-based sandwich panels reinforced with basalt, glass and jute fabric

The sound absorption performance of wood-based sandwich panels reinforced with basalt fiber fabric, glass fiber fabric, and jute fabric was investigated to assess their potential application as sustainable acoustic panel materials. Four experimental groups were prepared panels reinforced with basalt fabric (Group A), jute fabric (Group B). glass fabric (Group C), and unreinforced reference panels (Group D). The sound absorption coefficients (SAC) were determined using the impedance tube method in accordance with ISO 10534-2 over a frequency range of 800-2400 Hz. The highest sound absorption coefficient was recorded for Group B samples, reaching a maximum value of 0.85 at 1200 Hz. In comparison, Group A exhibited a lower peak absorption of 0.52 at 800 Hz, while Group C reached its maximum value of 0.51 at 1400 Hz. Similarly, Group D demonstrated its highest sound absorption coefficient of 0.41 at 800 Hz, indicating comparatively reduced acoustic performance among the tested groups. Both Group A and Group D samples exhibited their lowest sound absorption performance at 2400 Hz (α = 0.05).