INVESTIGATION OF FLEXURAL BEHAVIOR OF CARBON FIBER BEAMS

Abstract

In this study, beams with hat profiles were produced. For this purpose, carbon fiber woven fabrics were preferred as reinforcement elements. Afterwards, bending test was applied to these composite beams. As a result of the experiments, displacement-force graphs were obtained on the moving cylinder. In the numerical analysis section, Hashin damage criterion was preferred for damage initiation. "Continuous Damage Mechanics (CDM)" and "Material Property Degradation (MPDG)" methods are defined in the program for damage progression. In the bending test, crushing damage was observed as the dominant damage on the surface of the specimen in contact with the moving cylinder under load. Fiber breakage along with fiber tensile damage was observed on the surfaces in contact with the fixed support rollers. It was observed that the experimental results were closer to each other with the MPDG method. The convergence rate of experimental and numerical data was determined as 89.55%.