Acoustical Behavior of Hybrid Composite Sandwich Panels

Abstract:

This paper deals with the characterization of acoustic insulation behaviour of hybridsandwich composite panels for application in modular house construction. These sandwich panelsare a sustainable, light-weight and durable solution, since are based on natural fibers structureimpregnated with a thermosetting polymer. In this way, three different types of hybrid compositepanels containing polyurethane core and laminated composite skins were produced and analyzed,varying the composition of laminates. The composite laminates of the prototypes were producedusing a vacuum infusion technique and were composed of glass and jute fibers, impregnated with apolyester resin. The solutions developed were compared with a standard, composed of plasterboardshaving different thicknesses and used for thermal and acoustic insulation. Acoustic insulationcharacterization was performed on specimens with 220x220 mm size in a sound proof acousticchamber. The tested sandwich panels showed promising results; however, their overall performancewas lower as compared to the performance of standard solutions used for comparison. Nevertheless,the specific acoustic insulation performance, i.e. sound reduction per unit mass of material for thedeveloped sandwich panels was significantly higher as compared to the standard materials,indicating better suitability of this innovative solution for light-weight construction and modularhousing.

• Periodical: Key Engineering Materials (Volume 634)
• Pages: 455-464
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.634.455
• Online since: December 2014
• Authors: Sérgio Patinha*, Fernando Cunha, Raul Fangueiro, Sohel Rana, Fernando Prego
• Keywords: Acoustic Insulation, Hybrid Composites, Sandwich Panels

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