Investigated the Sound Absorption Performance of Wood-Based Sandwich Panels with Reinforced BFRP, GFRP, and Jute Fabric

The sound absorption efficiency of the wood based sandwich panels with reinforced bas-alt fiber reinforced (BFRP), glass fiber reinforced (GFRP), and jute fabric composite materi-als and evaluate their potential as acoustic panels were investigated. Four experimental groups were created. Wood based sandwich panels were reinforced with BFRP (Group A), jute fabric (Group B), GFRP (Group C), and unreinforced (Group D). The sound absorption coefficients of the unreinforced and experimental groups were tested via the impedance tube method, according to ASTM standard E1050 (2006). Attention was paid to the acoustic behavior at low frequencies (200 Hz to 800 Hz), mid frequencies (1000 Hz to 1600 Hz), and high frequencies (1800 Hz to 2400 Hz). The sound absorption coefficient was highest in sapwood at 200 Hz frequency level with 0.67, while the highest in heartwood was 0.05 at 2400 Hz frequency level. It can be suggested that the experimental groups be used as sound absorbing acoustic panels.