Investigation of the Damping Abilities of Sheep Wool Reinforced Expanded Polystyrene Core Layer Composites at Different Energies.

In this study, natural fiber reinforced polymer foam core layered composites were produced for the automotive industry. Sheep wool was used as natural fiber. Polymer foam with a single layer XPS foam structure was used as the core material. XPS foams and fibers are bonded to the upper and lower sides of the foams with the help of resin. Samples were produced with one and two layers on both sides, with a total of two and four layers. Production was carried out using the vacuum bagging method using the manual laying method. After the production was completed, it was cut to dimensions in accordance with the standards and experiments were carried out. Compression tests, three-point bending tests and low-speed impact tests were carried out to analyze the energy absorption capabilities of the produced samples. As a result of the experiments, it was determined that the samples with a total of two floors provided better performance than the samples with a single layer. In the impact tests, rebound occurred in the double-layered samples in the 10 J impact tests, and punctures or stabbings were detected in the 20 J tests. [ABSTRACT FROM AUTHOR]