Madenci Emrah, Özkılıç Yasin Onuralp, Bahrami Alireza, Aksoylu Ceyhun, Asyraf Muhammad Rizal Muhammad, Hakeem Ibrahim Y, Beskopylny Alexey N, Stel'makh Sergey A, Shcherban Evgenii M, Fayed Sabry
Department of Civil Engineering, Necmettin Erbakan University, 42090, Konya, Turkey.
Department of Civil Engineering, Lebanese American University, Byblos, Lebanon.
Heliyon. 2024 Apr 2;10(8):e28388. doi: 10.1016/j.heliyon.2024.e28388. eCollection 2024 Apr 30.
Carbon nanotube (CNT) reinforcement can lead to a new way to enhance the properties of composites by transforming the reinforcement phases into nanoscale fillers. In this study, the buckling response of functionally graded CNT-reinforced composite (FG-CNTRC) sandwich beams was investigated experimentally and analytically. The top and bottom plates of the sandwich beams were composed of carbon fiber laminated composite layers and hard core. The hard core was made of a pultruded glass fiber-reinforced polymer (GFRP) profile. The layers of FG-CNTRC surfaces were reinforced with different proportions of CNT. The reference sample was made of only a pultruded GFRP profile. In the study, the reference sample and four samples with CNT were tested under compression. The largest buckling load difference between the reference sample and the sample with CNT was 37.7%. The difference between the analytical calculation results and experimental results was obtained with an approximation of 0.49%-4.92%. Finally, the buckling, debonding, interlaminar cracks, and fiber breakage were observed in the samples.
碳纳米管（CNT）增强可以通过将增强相转变为纳米级填料，从而为增强复合材料性能带来一种新方法。在本研究中，对功能梯度碳纳米管增强复合材料（FG-CNTRC）夹层梁的屈曲响应进行了实验和分析研究。夹层梁的顶板和底板由碳纤维层压复合材料层和硬芯组成。硬芯由拉挤玻璃纤维增强聚合物（GFRP）型材制成。FG-CNTRC表面层用不同比例的碳纳米管增强。参考样品仅由拉挤GFRP型材制成。在该研究中，参考样品和四个含碳纳米管的样品在压缩下进行了测试。参考样品与含碳纳米管样品之间的最大屈曲载荷差异为37.7%。分析计算结果与实验结果之间的差异在0.49%-4.92%的近似范围内。最后，在样品中观察到了屈曲、脱粘、层间裂纹和纤维断裂。
