BORASSUS WOOD ACOUSTIC TESTS ON THE KUNDT TUBE FOR DETERMINATION ACOUSTIC CHARACTERISTICS

Abstract

Noise as an acoustic phenomenon producing an unpleasant and disturbing auditory sensation constitutes a real danger for man and for the environment. Faced with the dangers that noise represents for humans, various solutions are possible in order to reduce them by confining it or by using absorbent materials. Borassus wood would respond to this desire to absorb noise in the habitat. Unknown in the spectrum of wood, the determination of the acoustic parameters will be the subject of this work. The materials are used in the habitat for decorative purposes without knowing the acoustic role. The acoustic range is evaluated by tests carried out on samples taken from the Borassus. The samples are cut so the fibers are cut and chopped. The evaluation is made on the tube of the Kundt model from expanded polystyrene for its validation. Three (03) categories of measurements are carried out with three (03) samples at different frequencies between 125 and 4000 Hz. From the transfer function, the reflection of the material is determined following the three categories of measurements. The results are obtained on the basis of the tube produced and calibrated. This work which remains the beginning of the acoustic characterization of Borassus attests that Borassus is a reflective material on the hard part. The spongy part is not characterized but remains a valuable zone.