Fabrication of cost-effective double layers composite for efficient sound-absorbing based on sustainable and flame-retardant jute fabrics

Abstract

Noise pollution is rapidly increasing, posing a health risk, particularly in the low frequency range. Therefore, the development of cost-effective, environmentally friendly and efficient audible sound absorbing materials is a necessary and crucial process. To this end, smart multilayer sound absorber has been developed based on micro-perforated panels and Jute fabrics as renewable and eco-friendly sound-absorbing material. Different perforation shapes have been fabricated and used for micro-perforated panels and optimized. The sound absorption properties for the new developed sound-absorbing system were evaluated inside a two-microphone impedance tube achieving outstanding results. The developed sound-absorbing system achieved higher sound absorption properties recording more 70% at low frequencies range (<500 Hz), also achieved excellent sound absorption coefficient with broad bandwidth. Furthermore, the flammability properties of the used Jute fabrics were evaluated achieving flame retardancy property of 44 mm/min rate of burning and 20% LOI value. Additionally, the Jute fabrics mechanical and surface morphology properties were investigated. Hence, this study presents a smart, cost-effective, flame retardant and efficient absorption system suitable for noise control for a wide applications range.

Recent progress in acoustical materials and noise control approach

“…A porous structure and high acoustic performance are characteristics of NFs. Accidental sound wave exposure to porous material enables the air to vibrate and change into different energy forms within the pores [6]. The NFs are favourable to the environment.…”

“…The acoustic performance of fibrous material is remarkably affected by its thickness and air gap. Due to biobased nature, biogradability of (NFs) and positive interactions with other fibrous materials, (NFs) are arising as the closer descent of sustainable sound AMs [13][14][15]. Santoni et al [16] investigated how the physical properties and SAC of hemp fibrous materials were affected by sweep, alkaline handling, wider age combing, and fine age combing.…”

“…Recently, it has been observed that the usage of micro-capillary plate sound absorbers micrometric pore sizes results in broadband (LF) sound behavior [47,48] and may be a very promising tactic. El-Basheer et al designed MPPs with jute fabric and they got high absorption with good bandwidth within LF [15]. The perforation ratio, porous material, and air cavity all had an impact on the 3D-printed ceramic perforated panel's SAC by Khosravani et al [46].…”

Monitoring of traffic noise pollution in urban Patna, Bihar, India

“…2 Especially in the low frequency range, noise pollution poses a health risk. 3 The main sources of noise are industrial noise, traffic noise, and community noise, of which traffic noise affects more than other sources. 4 In urban areas, traffic-related noise pollution accounts for two-thirds of total noise pollution.…”

Durability of Shield Effective Polyester Cotton Fabric with Integrated Stainless Steel Threads in Processes of Dry and Wet Cleaning

“…This mechanism’s shielding safeguards both humans and technology. It is important to carefully design textiles suitable to mitigate external hazards [ 8 , 9 ]. Shield-textile structures should be designed to maximize comfort, wearability, breathability, and durability as extra features for clothing.…”