Analysis of solid wood beams strengthened with CFRP laminates of distinct lengths

This paper investigates the mechanical behavior of solid wood beams reinforced with CFRP laminates. Experimental, numerical and analytical approaches are explored in order to assess the effect of the reinforcement length on the interfacial shear and peeling stresses which are critical for a failure prediction. The experimental program aimed the characterization of the base materials and the comparison of the performance of wood beams with distinct reinforcement lengths and beams without any reinforcement. Finite element models were proposed and calibrated using the experimental data. Finally, analytical models for the interfacial stresses were applied and their performance assessed and compared with the numerical results. The success of the analytical models depends on consideration of shear deformation of the adherents, in particular of the wood, which shows relative low shear modulus.