An Investigation of Automotive Seat Fabric Sound Absorption

2001 ◽  
Author(s):  
Antwan Mcmullan ◽  
Marv Mealman
Keyword(s):  
Sound Absorption ◽  
Fabric Sound

Manufacturing Process and Property Analysis of Sound Absorption Sandwich Board

2008 ◽  
Vol 55-57 ◽  
pp. 393-396 ◽  
Author(s):  
Ching Wen Lou ◽  
P. Chen ◽  
Jia Horng Lin
Keyword(s):  
High Frequency ◽  
Sound Absorption ◽  
Low Frequency ◽  
Core Material ◽  
Frequency Sound ◽  
Nonwoven Fabrics ◽  
Material Thickness ◽  
Flame Retarded ◽  
Fabric Sound ◽  
Absorbing Property

Typical fabric sound absorbing materials have excellent absorbing property in high frequency, but in low frequency the absorbing performance is bad. In this study the flame retarded hollow 3D crimp PET fiber and low melting point PET fiber were used to manufacture sound absorption sandwich board (SASB). By changing the skin material of sandwich structure that the low frequency of sound absorbed will improve. The SASB was combined with two skin materials and one core material. The skin materials were manufactured into the nonwoven fabrics by needle punched and thermal compressing process. The skin materials have two different thickness (0.02 mm and 0.5mm).The core material was combined five layers of loose nonwoven fabrics and bonding by thermal compressing at the same gauge (15 mm). The sound absorbing properties of core material and sandwich board were analyzed. The sound absorbing property was evaluated using two microphone impedance tube according to ASTM E1050-98. When the skin material thickness is 0.02 mm, both of the high frequency and low frequency sound absorption was optimized. When the skin material thickness is 0.5mm, the sound absorbing property is similar to typical fabric material. The high frequency sound absorption is excellent, but the low frequency sound absorption is bad.

Effect of Coating Thickness on Sound Absorption Property of Four Wood Species Commonly Used for Piano Soundboards

2020 ◽  
Vol 52 (1) ◽  
pp. 28-43 ◽  
Author(s):  
Wei Xu ◽  
Xiaoyang Fang ◽  
Jiatong Han ◽  
Zhihui Wu ◽  
Jilei Zhang
Keyword(s):  
Coating Thickness ◽  
Wood Species ◽  
Sound Absorption ◽  
Absorption Property

scholarly journals Acoustic Panels Made of Paper Sludge and Clay Composites

2021 ◽  
Vol 13 (2) ◽  
pp. 637
Author(s):  
Tomas Astrauskas ◽  
Tomas Januševičius ◽  
Raimondas Grubliauskas
Keyword(s):  
Absorption Coefficient ◽  
Sound Absorption ◽  
Composite Panel ◽  
Sound Absorption Coefficient ◽  
Core Material ◽  
Paper Sludge ◽  
Frequency Range ◽  
Absorption Properties ◽  
Air Gaps ◽  
The Core

Studies on recycled materials emerged during recent years. This paper investigates samples’ sound absorption properties for panels fabricated of a mixture of paper sludge (PS) and clay mixture. PS was the core material. The sound absorption was measured. We also consider the influence of an air gap between panels and rigid backing. Different air gaps (50, 100, 150, 200 mm) simulate existing acoustic panel systems. Finally, the PS and clay composite panel sound absorption coefficients are compared to those for a typical commercial absorptive ceiling panel. The average sound absorption coefficient of PS-clay composite panels (αavg. in the frequency range from 250 to 1600 Hz) was up to 0.55. The resulting average sound absorption coefficient of panels made of recycled (but unfinished) materials is even somewhat higher than for the finished commercial (finished) acoustic panel (αavg. = 0.51).

Effects of Kenaf Fiber Strand Treatment by Sodium Hydroxide On Sound Absorption

2021 ◽  
pp. 1-10
Author(s):  
Ida Norfaslia Nasidi ◽  
Lokman Hakim Ismail ◽  
Emedya Samsudin ◽  
Muhammad Ismail Jaffar
Keyword(s):  
Sodium Hydroxide ◽  
Sound Absorption ◽  
Kenaf Fiber

Characterisation of microstructural and sound absorption properties of porous asphalt subjected to progressive clogging

2021 ◽  
Vol 283 ◽  
pp. 122654
Author(s):  
Mohd Zul Hanif Mahmud ◽  
Norhidayah Abdul Hassan ◽  
Mohd Rosli Hainin ◽  
Che Ros Ismail ◽  
Ramadhansyah Putra Jaya ◽  
...  
Keyword(s):  
Sound Absorption ◽  
Absorption Properties ◽  
Porous Asphalt
Sign in / Sign up

Export Citation Format

Share Document