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Showing 1 to 3 of 3 for “"QC221-246 Acoustics. Sound"”.
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Effect of sound radiation from plate attached with absober
… to contribute to substantial vibration and sound radiation, which lead to excessive noise. So, the study was carried out by determine the sound pressure radiated from simply support plate (SSP) without absorber and compared with attached single absorber in term of vibration reduction. Later, …
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Acoustical characteristic of empty fruit bunch (EFB) fibre with influence of sodium hydroxide treatment time and decay lifespan
… as control unit and the standard used for sound absorption test was ISO 10534-2 and ASTM E1050-98. The EFB has undergone a chemical modification process known as alkali treatment using sodium hydroxide (NaOH). Five parameters were chosen for the alkali treatment process which is the fiber …
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Sound absorption characteristic of lightweight brick containing Expanded Polystyrene Beads (EPS) and Palm Oil Fuel Ash (POFA)
… objectives of this research is to identify the sound absorption characteristic of lightweight bricks containing expanded polystyrene beads (EPS) and palm oil fuel ash (POFA). In order to fulfill the standard of a lightweight brick to be used as a building element, the physical and mechanical …