Sound-Absorption Coefficient of Bark-Based Insulation Panels. [PDF]
Polymers (Basel), 2020 The objective of this study was to investigate the sound absorption coefficient of bark-based insulation panels made of softwood barks Spruce (Picea abies (L.) H. Karst.) and Larch (Larix decidua Mill.) by means of impedance tube, with a frequency range between 125 and 4000 Hz.
Tudor EM +5 more
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A new simple method for determining the sound absorption coefficient [PDF]
MATEC Web of Conferences, 2018 Taking into account the influence of the length and diameter of the impedance tube on the process of decay of sound waves, a new study of sound propagation in an impedance tube is presented, on the basis of which it is easier to determine the sound ...
Chelidze Merab
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Sound Wave Absorption Coefficient and Sound Velocity in Thermally Modified Wood
Applied Sciences, 2023 The present work analyses the absorption coefficient of sound waves and the speed of sound propagation in thermally modified wood. The high resistance to weathering, fungi, and better dimensional stability, and therefore the broad physical properties of ...
Przemysław Mania +2 more
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An alternative coefficient for sound absorption
, 2013 The acoustic absorption coefficient is a number that indicates which fraction of the incident acoustic power impinging on a surface is being absorbed. The incident acoustic power is obtained by spatial integration of the incident intensity, which is (classically) defined as the time-averaged intensity associated with the incident sound field.
Ysbrand H. Wijnant +2 more
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پزشکی بالینی ابن سینا, 2008 Introduction & Objective: Noise is one of the most important harmful agents in work environment. In spit of industrial improvements, exposure with over permissible limit of noise is counted as one of the health complication of workers.
Rostam Golmohammadi +3 more
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Correction to "Optimization of the Sound Absorption Coefficient (SAC) from Cellulose-Silica Aerogel Using the Box-Behnken Design". [PDF]
ACS Omega, 2022 Silviana S +3 more
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Nihon Kikai Gakkai ronbunshu, 2016 In this paper, we report the use of sound-absorbing materials, specifically sound-absorbing structures of bundled rice straws, that are oblique arranged incident to the sound waves.
Shuichi SAKAMOTO +3 more
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Optimized design and experimental validation of sound absorption coefficient performance in aluminium metal foam by spark plasma sintering. [PDF]
Heliyon, 2023 Jafari MJ, Madvari RF, Ebadzadeh T.
europepmc +3 more sources
Mathematical Model for Estimating the Sound Absorption Coefficient in Grid Network Structures. [PDF]
Materials (Basel), 2023 Satoh T +4 more
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Theoretical Estimation of Wheat Straw Sound Absorption Coefficient Using Computed Tomography Images
Applied SciencesWheat straw, which is a by-product of wheat production and has a tubular structure, is typically used for animal feed and compost. This study estimated the sound absorption coefficient of wheat straw based on cross-sectional computed tomography (CT ...
Shuichi Sakamoto +4 more
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