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Innovative Composite Materials for Sound Absorption and Insulation
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Materials with sound-absorbing or sound-insulating properties have been rapidly evolving in recent years for several reasons. On one side, there is the ever-increasing awareness of the adverse effects that noise and lack of acoustic comfort may have on human health. On the other, the availability of more sophisticated fabrication techniques, calculation methods, and new materials, has stimulated researchers and, more and more frequently, industry to develop customized materials with improved properties.This book collects contributions from different researchers covering several topics. A group of papers investigated the use of 3D printing to obtain perforated panels with extended frequency response, as well as to ideally design an optimized cell distribution to print (when fabrication techniques will make it possible) a porous material with a broader sound absorption. The role of the geometrical and microstructural properties of granular molecular sieves is investigated by another paper. A second group of papers focused its attention on the use of natural or recycled components to create a skeleton of porous materials with good sound-absorbing properties and low environmental impact. Cigarette butts, recycled textile waste, and almond skins have been investigated by different authors.Finally, the last batch of papers included a review of sound insulation properties of innovative concretes and two research papers focussing on a numerical and experimental analysis of wood plastic composite (WPC) panels and on the potential of semi-active solutions employing compressible constrained layer damping (CCLD).
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Keywords
- absorber array
- Acoustic properties
- Agro-waste
- anisotropic materials
- biopolymers
- cigarette butts
- Circular Economy
- Composite materials
- compressible constrained layer damping
- Concrete
- diffuse field
- flame retardant
- graded properties
- hygrothermal performances
- impedance tube
- low frequency absorption
- molecular sieve pellets
- morphing structure
- n/a
- Noise
- optimized absorption
- orthotropic panel
- perforated panel
- perforated plates with extended tubes
- periodic absorber
- Phase change material
- polyurethane foam
- Porous materials
- radiation efficiency
- recycling
- sandwich panel
- semi-active damping
- sound absorber
- sound absorption
- sound transmission loss
- sound-absorbing
- sound-reflecting
- sustainable material
- Sustainable materials
- Technology, engineering, agriculture
- Technology: general issues
- textile waste
- thermal property
- transmission loss
- variability analysis
- wavenumber analysis
- wood plastic composite
Links
DOI: 10.3390/books978-3-0365-2380-4Editions