Influence of glueline parameters on the mechanical behaviour of CFRP reinforced wood - numerical analysis

Influence of glueline parameters on the mechanical behaviour of CFRP reinforced wood – numerical analysis. This work presents numerical investigation of wood strengthening technique in the aspect of glueline parameters. Described reinforcement method consists in application of CFRP tape (Carbon Fibre Reinforced Polymer) of a certain length in aim to increase load capacity and stiffness of reinforced wooden element. CFRP tape is bonded to the tensile area of bent beam with a glue, creating a system composed of wooden beam, glueline and reinforcement. However, depending on the parameters of the bond (rigid, elastic), differences in mechanical behaviour of the composite can be observed. Usage of the glue bond characterized by elastic properties leads to lower stress concentration within the composite, therefore the effectiveness of reinforcement could be increased.