Flexural fatigue and fracture toughness behavior of nanoclay reinforced carbon fiber epoxy composites
Flexural fatigue and fracture toughness behavior of nanoclay reinforced carbon fiber epoxy composites
复制标题
DOI：
10.1177/0021998320935166
复制
发表时间：
2020-06
影响因子：
2.9
通讯作者：
Md Sarower Tareq;S. Zainuddin;M. Hosur;Bodiuzzaman Jony;Mohammad Al Ahsan;S. Jeelani
中科院分区：
文献类型：
--
作者：
Md Sarower Tareq;S. Zainuddin;M. Hosur;Bodiuzzaman Jony;Mohammad Al Ahsan;S. Jeelani
3-通过点弯曲疲劳和I型层间断裂试验，研究了纳米粘土添加碳纤维/环氧复合材料的疲劳寿命和断裂韧性。疲劳寿命数据采用威布尔分布函数进行分析，用Kolmogorov-Smirnov拟合优度进行验证，并分别用威布尔和Sigmoidal组合模型进行预测。纳米相样品显示出超过300%的平均和预测的疲劳寿命的改善。在0.7的应力水平下，纳米相样品通过了“终止”疲劳标准（106次循环），而纯样品更早地失效。层间断裂韧性的纳米相样品也提高了71%以上的纯样品显着。纳米相断裂样品的光学和扫描电子显微镜图像显示了某些特征，这些特征改善了复合材料各自的疲劳和断裂性能。
3-point flexural fatigue and Mode I interlaminar fracture tests were done to study the fatigue life and fracture toughness of nanoclay added carbon fiber epoxy composites. Fatigue life data was analyzed using Weibull distribution function, validated with Kolmogorov-Smirnov goodness-of-fit, and predicted by combined Weibull and Sigmoidal models, respectively. The nanophased samples showed more than 300% improvement in mean and predicted fatigue life. At 0.7 stress level, the nanophased samples passed the ‘run-out’ fatigue criteria (106 cycles), whereas, the neat samples failed much earlier. The interlaminar fracture toughness of nanophased samples was also enhanced significantly by 71% over neat samples. Optical and scanning electron microscopic images of the nanophased fractured samples revealed certain features that improved the respective fatigue and fracture properties of the composites.