Abstract
This work presents an experimental study to determine the mechanical properties in bending, tension, compression and shear of a new sandwich material based on natural materials (jute and cork). The sandwich material is made basically of natural materials whose soul is agglomerated cork white (located in Jijel, East of Algeria) and the skins are woven jute with ortho phthalic polyester resin. Agglomerated white cork granules with medium density were used (cork boards with thicknesses of 10, 20 and 30 mm). The bending tests were performed on standard samples that were cut elaborate sandwich plates. The sandwich material prepared was tested for 3 and 4 flex points which indicate the stress, strain, bending stiffness, shear strength and failure mode. It was also found that a core thickness of 10 mm has better results compared to 20 and 30 mm. The results of this study allow us to develop a variety of agglomerated cork white product in for the development of low-density sandwich panels for use in the field of insulation and field of construction. Key words: Cork, jute, resin, sandwich, mechanical characteristics.
Highlights
The use of composite materials is increasingly spreading
This study focuses on the development of sandwich panels with face sheets of laminates with jute fiber and epoxy resin and agglomerated cork as core, including multilayered design
The results of the stress and the maximum shear modulus of sandwiches S10, S20 and S30 from the shear tests according to the NF T 54-606 are not significant as they were observed during the test and after some filling 250 [kgf], peeling skin (Figure 18b) of the soul that is due to poor adhesion between the cap and the polyester resin film and epoxy resin used between the laminates and sandwich core has resist this charge and it has not suffered the shear
Summary
The use of composite materials is increasingly spreading. Their main characteristics include low density, high strength, high stiffness and excellent hardness, which are the requirements in areas such as aerospace, automotive, navigation, construction, etc. The underlying objective is to use natural local materials to the production of sandwiches with panels of ecological footprint and environmental production of sandwich panels which are light and show good insulation performers, low cost, for partitioning use in construction or interior walls of separation. In this context, we mechanically characterize a new composite sandwich core of cork and laminate jute/polyester. This study will focus on the use of a white agglomerated cork medium density with different thicknesses
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