COMPOSITE MATERIALS AND SANDWICH PANELS WITH COMPOSITE FACE SHEETS WITH POLYESTER AND EPOXY MATRIX

Abstract

This paper presents the experiment test for the tensile properties of two series of composite materials and two series sandwich panels with composite face sheets, which differed according to the type of matrix. The ultimate tensile strength and the initial module of the elasticity of the composite materials were experimentally determined. Sandwich panels in the experimental tests were subjected on three points bending by linear load in the middle of their span. The analysis was performed in order to evaluate the influence of the matrix type on the ultimate mechanical characteristics of the sandwich panels. Influence of the matrix type used in the composite face sheets was evaluated by analysis of F ‒ δ behavior of series of sandwich panels, as well as by analysis of F ‒ σ behavior of the composite face sheets.