Interfacial Stress Evaluation According to Flexural Reinforcement of Pultruded I-Shape Fiber Reinforced Polymer Plastic Member Reinforced with Carbon Fiber Sheet
이 연구는 탄소섬유시트의 보강겹수와 보강위치에 따른 I형 PFRP 휨부재의 휨보강 효과에 대해 조사하였다. 또한, 탄소섬유시트로 보강한 PFRP 휨부재의 실험적, 이론적으로 확인하기 위해 유한요소해석을 실시하였으며, 휨실험 결과와 이론적 해석결과를 비교분석하였다. 휨실험 결과와 유한요소해석 결과는 이론적인 결과와 비교한 결과 일치하는 경향을 보였고, 휨보강 효과가 큰 탄소섬유시트 2겹을 보강한 시편에서 결과에서 오차가 가장 크게 발생하였다.
The effect of reinforcing pultruded I-shape fiber reinforced polymer (FRP) flexural members based on the number of reinforcing layers and the position of the carbon fiber sheet was investigated in this study. Furthermore, finite element analysis was performed for experimental and theoretical verification of pultruded I-shape FRP flexural members reinforced with carbon fiber sheets and the flexural test and theoretical analysis results were compared. The flexural test and the finite element analysis results were similar to the theoretical results. The results of the specimens reinforced with 2-ply carbon fiber sheets, which had a flexural strengthening effect, showed the greatest difference.