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Design optimization for broadband sound insulation by double-panel structure with a slot-type Helmholtz resonator array at low frequency range
In this paper, a numerical study is conducted to optimize the double-panel structure with a locally resonant sonic crystal for the band reduction of...
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Fatigue-resistant polyimide aerogels with hierarchical cellular structure for broadband frequency sound absorption and thermal insulation
Living in the noisy environment for long time would cause various diseases and seriously harm physical and mental health of mankind. In this work,...
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Sound insulation properties of plate-type acoustic metamaterial structures with different types of resonators
Low frequency noise control is difficult due to the large wavelength. Acoustic metamaterials (AMs) bring a new sight for low frequency noise control...
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Dam** contribution of viscoelastic core on airborne sound insulation performance of finite constrained layer dam** panels at low and middle frequencies
The airborne sound insulation performance of finite sandwich panels is often significantly worsened by resonant transmission components in low and...
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Effect of sound insulation on noise reduction in an agricultural tractor cab
Tractor cab interior noise is a risk factor that degrades operators’ work performance and threatens their health; therefore, the noise must be...
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Design of flat broadband sound insulation metamaterials by combining Helmholtz resonator and fractal structure
A new sound insulation metamaterial (SIM) is designed by combining a Helmholtz resonator and a fractal structure for sound insulation in the...
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Optimization of material thickness distribution in single and double partition panels for maximized sound insulation
In this work, we propose a method to optimize the material thickness distribution of partition panels for maximized sound insulation while...
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A scalable high-porosity wood for sound absorption and thermal insulation
The search for more-sustainable materials has motivated research on lightweight, porous structures for thermal insulation and noise reduction, such...
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Frozen sound: An ultra-low frequency and ultra-broadband non-reciprocal acoustic absorber
The absorption of airborne sound is still a subject of active research, and even more since the emergence of acoustic metamaterials. Although being...
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Sound Insulation Performance of Foam Rubber Dam** Pad and Polyurethane Foam Board in Floating Floors
Elastic materials can be used to improve the impact sound insulation performance of the floating floor. In this study, the foam rubber dam** pad...
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Thermal insulation and antibacterial honeycomb aerogel derived from carboxymethyl chitosan for integrated sound absorption
In this study, the pore structure of carboxymethyl chitosan aerogel (CCSA) was modulated by adjusting the concentration of carboxymethyl chitosan...
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Tunable low frequency band gaps and sound transmission loss of a lever-type metamaterial plate
A novel metamaterial plate with subwavelength lever-type resonators is proposed to obtain low frequency broadband band gaps and good sound insulation...
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Membrane-Type Acoustic Metamaterials Carrying Asymmetric Arc/Platelet Masses for Sound Insulation
ObjectiveThis study presents a novel membrane-type acoustic metamaterial (MAM) with loaded masses of asymmetric dimensions and arrangements. The...
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Acoustic insulation and directional refraction of dual-functional pentamode metasurface
Acoustic metasurface is a membrane-like two-dimensional metamaterial with subwavelength thickness and special acoustic properties. Based on...
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Emerging fabrication of ceramic nanofiber aerogel with the application in high-temperature thermal insulation, environment, and electromagnetic wave absorption
Ceramic nanofiber aerogels (CNFAs), built from ceramic fiber components, stand out for their multifunctional properties, including low density, low...
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Multifunctional ultralight nanocellulose aerogels as excellent broadband acoustic absorption materials
Noise pollution has become one of the environmental hazards in parallel with air pollution, water pollution, and solid waste pollution worldwide....
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Development of Sustainable Sound and Thermal Insulation Products from Unconventional Natural Fibres for Automobile Applications
An attempt has been made in this present work to develop sound and thermal insulation products from unconventional natural fibres that could be...
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Thermal and acoustic insulation properties of wood plastic composites (WPCs) for interior housing applications
The thermal and acoustic insulation properties of low-cost wood plastic composites (WPCs) made from waste biomass of Acacia saligna and recycled...
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Sound Generation
For the development of primary, constructive noise reduction measures, knowledge of the sound generation mechanisms is decisive. In the following,...
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Multifunctional cellular carbon foams derived from chitosan toward self-cleaning, thermal insulation, and highly efficient microwave absorption properties
To adapt the practical demand, designing and constructing the multifunctional microwave absorbers (MAs) is the key future direction of research and...
