Mechanical Characterization of Ceramic Coated Hemp Fiber Reinforced Polymer Composites

Abstract

The majority of contemporary structures are made of synthetic composites with more cutouts. In engineering structures, the elimination of varying sizes and shapes is frequently utilized in the design of synthetic composites. In order to produce better design aids that can be utilized by design engineers, it is necessary to conduct extensive research on the effects of the stress concentration factor and the tensile behavior. By varying the size and position of the eliminate, the present study focuses on the hybrid polymer composite made of hemp fiber that exhibits tensile & flexural behavior. The ASTM D638 & D790 standard is used to prepare the test specimens. The conventional hand layup method is used to create the composite laminates. The tensile test was conducted using a Kalpak 100kN universal testing apparatus in accordance with ASTM D638 standards with the use of the Kalpak software interface. A span length of 57 mm was considered for the test. Throughout the test, the crosshead speed was maintained at 5 mm/min at room temperature. Tensile strength is increased to 20.612 MPa in the fibre with ceramic coating and 18.196 MPa in the fibre without ceramic coating. The identical Kalpak-produced 100kN universal testing apparatus was used, assisted by the Kalpak software interface; at a loading rate of 3 mm/min. Flexural strength with ceramic coating is 42.186 MPa and 39.339 MPa without ceramic coating. The current analysis also showed that differing fiber compositions have an impact on the improved or increased characteristics of composites.