Abstract
The present research investigation aims to fabricate a new class of fiber reinforced composite material by using biodegradable materials with epoxy as the strengthening agent. In order to explore the possibilities of using the new class of composite material in required application areas, the research work is carried out mainly in the field of the acoustic absorption properties of these bio fibers as an alternate building material. Also, the utilization of these materials as sound insulation will also provide a good solution to the waste management.
TopLiterature Review
Sung et.al have explained commercially available sound absorption materials could be generally divided into two categories: resonant sound absorption materials and porous sound absorption materials .Rey et.al (2007),Kozumi (2002) have explained natural fibers like bamboo fibres as accoustic, Zulkifh et.al have (2008) chosed multilayer coir fibre for accoustic, Asby et.al. (2003) have selected metal foam as accoustics in producing sound absorbing material.Hau et.al have explained that Metal foam has a porous index between 75 to 95 percent.
Key Terms in this Chapter
Composite Material: A composite material (also called a composition material or shortened to composite, which is the common name) is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual components.
Sound Absorption: Acoustic absorption refers to the process by which a material, structure, or object takes in sound energy when sound waves are encountered, as opposed to reflecting the energy. Part of the absorbed energy is transformed into heat and part is transmitted through the absorbing body.
Impedance Tube: The method of testing materials using impedance tube is called as normal incident sound absorption or transmission loss testing because of the normally incident sound waves on to the surface of test sample in the tube.
Water Absorption: The effect of water absorption on the mechanical properties of flax reinforced bio epoxy composites has been studied by the immersion of the samples in water at room temperature. It shows that water absorption increases with an increase in fibre weight fraction due to a higher cellulose content.
Biodegradable: Biodegradation is the breakdown of organic matter by microorganisms, such as bacteria and fungi. Biodegradable Plastics refers to a material that maintains its mechanical strength during practical use but break down into low-weight compounds and non-toxic byproducts after their use.
Acoustics: Acoustic materials play an important role in noise control solutions.